Opa2134 vs opa1642 reddit. 0 nV Hz (Typical) DC Voltage Gain: 50000.
Opa2134 vs opa1642 reddit 4. The OPA2134 is an op-amp not comparable to the TDA2822, so you cannot use the same circuit and swap out the IC. Help on op amp rolling: Burson SS V5i-D swap in to replace the stock OPA2134 in the FXAudio DAC 6X mk 2 When I replaced the stock OPA2134 in the FX Audio DAC X6 mk 2 with the Burson SS V5i-D I heard only static noise in the right side of my headphones and no music goes Op-Amps 4558 vs TL072 vs OPA2134 vs 5532 vs LM741 vs LM833 vs LF353 vs OP07. Anything other than these values and they're either fake or damaged (or both). Technical Forums. 51 each, package SOIC-8 All SOIC-8 chips can be used if mounted on SOIC8-to-DIP browndog adapters which I usually buy for $3 - $2. Thread / Thread Starter Replies / Views Last Post; TK-lizer, new EQ from TK Audio OPA2134 vs. Technical "OPA1612 vs LME49720" opamp comparison "OPA1612 vs LME49720" opamp comparison. Parts. Maybe running the first buffer stage hotter would help. Theme - Light; Yes sir. 2005-10-23 12:45 pm #2 2005-10-23 12:45 pm #2 AD797 Hi. 69K subscribers in the diypedals community. Notice the configuration of the resistors around pins 1, 7, and 8. Similar Sound compared to OPA2134 but Bass is little better under control. Even on diyaudio where you will find some of the most experienced engineers, not just armchair scientists, in recent years many have begun to change their stance on the conclusive of measurements to audiblility. If you don't mind adapters, the smd version of the opa2134 is cheaper. The sound quality comes from the entire circuit, not the op amp. but the ad8066 sometimes sounds almost to distant, not as OPA1642 looks good on paper, better when you read the chatter from TI engineer on the project The OPA2134 is the best FET for the buck at around $3-4 each. As both channels are in same package, you can get preamp very compact at a small PCB. While the opa2132 and opa2134 share similarities, they also have unique characteristics. The opa2132 provides high precision, making it ideal for demanding Well, the output offset in a OPA2134+BUF634 headphone amplifier is the offset of the OPA2134, which is only a few mV worst case. Both fet based opamps sounds a little bit more solid in the bass(not quantity but the imaging and the texture). In production pedal circuits I've seen it in the Diezel VH4 and Keeley Magnetic Echo The better FET-input op-amps are expensive because they are laser-trimmed and prices can be crazy. 4mA). Theme - Light; YYYY-MM-DD / 12-hour clock; OPA2134 and NE5532 both have power supply currents of about 4mA per channel, and have been widely adopted in the market (understatement). 7mV max still wins 🙂 . I know there are a lot of factors that set these apart, but I'm writing to ask what difference the amp modules make. 8 mA, for the OPA2134 typ. Apparently it's harder to work with, but i haven't gotten a chance to try it yet. The NE5532 is used everywhere as its sound profile is designed to catch I have always found the diference between opamps to be marginal at best. I've tried the lme49720 on a few dac and had the sameish experience as you. Joined 2003. 3. newer opa1642 (2009) OPA2134 - loudness curve, kicking bass but often no real depth and too fast unnatural cut away yes!, the worst soundstage or imaging, the decay is lost! Everything sounds swapped and cleaned, no distortion, but it sounds filtered to sound rounded, even the sometimes silvery highs don't disturb. The OPA2134 and LM4562NA measured almost identically but both above NE5532. By georgehifi March 22, 2022 in Stereo Amplifiers & Pre-Amps Share This is how I got a set of these including OPA1642 and OPA827. This, combined with the high output drive capabilities and good DC performance, makes it suitable for a wide range of demanding I´m still chewing on my layout for a 6 channel preamplifier with LM4562 (or OPA2134). Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. FET on the OPA1688, but strangely it is actually higher at 10nV/sqrt(Hz). Forums. Will it harm the rest of the amplifier? Thanks for the reply though, I checked it out and noticed the comment on the OPA2604 needing more juice, so I checked out the spec sheet at TI, and it seems like it'll like anything from +/-15V to +/-24V, while the OPA2134 only likes up to +/-18V (pretty close to the -17V of my power suply), so I think I'll feel safer going with the OPA2604 regardless. ) I wasn't expecting to hear any difference but couldn't believe the improvement in clarity with the LME49720 chip. It's a better chip. When we developed the OPA1656, this was also a major design target for us, and the designer and myself spent quite awhile in the lab with previous CMOS audio op amps (specifically OPA1652 and OPA1688) hunting for OPA1642 looks good on paper, better when you read the chatter from TI engineer on the project The OPA2134 is the best FET for the buck at around $3-4 each. the +/-9Vdc, at least as far as the Spice model is concerned. LF353N op amp replacement options for old school Genesis I must say that the improvement offered over the standard OPA2134 is not trivial. OPA2134 is basic hi quality Op-Amp and all rounder Op-Amp with great sound. 2021-10-07 10:05 am #3 2021-10-07 10:05 am Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. Is there any better OP than OPA2134 regards Progg70 . 2134 vs 2132 looking back i'd go with the 2134, it's so much cheaper and sounds the same. 1uf decoupling capacitors (one from +V to ground and one from -V to ground) placed as close to the device pins as possible. Nothing special. and lm4562(2006) also old headphones sen hd650(2003) beyer dt990(1985). If a FET-input amplifier is required for low bias OPA2134: High quality audio op amp, usually used when a very clear and transparent tone is needed. P. Joined 2018. Purchased at Amazon. AC Voltage Gain: 2200 at 10 kHz. Overall, the OPA1642 is a MUCH better choice. The OPA2134, in this application, was not nearly as striking an improvement. Depending on the actual application circuit, there are alternatives with better noise performance. I feel the OPA2134 has the highest 2nd order harmonic distortions that I can not live with. 1. 4mA), and the LM4562 3. Forum Style That op amp is not all that bad. Behind the 2228, the 2604 is my favorite BB opamp that I have heard (I have yet to hear the 627). I do not know if you are interrested but i have a preamp using the AD8610 (Which is basicly the same as a AD8620) and compared to the OP275 (I know it is not the OPA134) the mid and highs are more smooth and more detailed. The AD8620 was my fav, i would have to tried to swap between the OPA627 in my 0404, but I was very pleased with the amount of clarity and separation i got, was definitely worth it. Facebook X (Twitter) LinkedIn Reddit Pinterest The OPA1642 has more open at the high frequency, it is more detail but it noticeable sharp and edgy sound. I performed the same test with the unity gain setup and got 8. Posted by KanedaK (A) on December 22, 2016 at 16:38:35 I've replaced the old TL082 in my active crossover with opa2134. Personally, I like the ne5532 with the cs4398(about the same detail level as the opa2134 subjectively but smoother sounding in my opinion). newer opa1642 (2009) 30 votes, 13 comments. Home Sometime I use OPA1612, OPA1642 and OPA1622. OPA1642 OPA1612 AD8066 AD8599 AD8022 . Slew Rate: 9. OPA2134, price at Mouser $4. From: Thanks Jack I can hear a difference I will be getting some of the 2134's in my Nashville 1000 here soon. between the OPA2132 and OPA2134. My own conclusions with MUSES: In I/V stage: Muses02 vs BB Okay so I've been comparing the micro stack, ultra micro stack and the basic desktop amps. Yes, there are tiny differences in the specs but you'd need extensive test equipment to be able to measure the difference. Would it be worthwhile to take out the OP275GP and replace them with the latter? Here is the datasheet The opa2134 already installed is neutralish/slighty bassy. 00015 % Intermodulation Distortion G = 1, f = 1kHz, VO = I am sure this opa2134 can work ! because the volume level is lower a little than 5218 , not much lower ! If opa2134 was dead, I can only heard very low volume! I know that gain is not changed by replaceing opamp, In fact , I must adjust more level to get enough volume as 5218 in here , it is so strange! Sorry ! I found a photo of a commercial design, that uses a OPA2134 along with a pair of IRF510's for the output, that I would like to build and try. g. IIRC it comes directly from the TI web site. Music sounded a bit constrained, deadened sense According to the web site it is doc to use the OPA2134. It has the most stable input capacitance vs. Home The LM833 was released way more than 20 years ago, and if memory serves, OPA2134 was released around the year 2000, and LM4562 around 2006. Their distortion is not specified in the audio band. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp (Digidesign and E-MU. The second one could be a bipolar type with good drive capability such as the LM4562--about the same price as the 2134. 77K subscribers in the diyaudio community. I have used the OPA2134 as the first gain stage in a number of high quality DIY phono stages, with the LM4562 in the second overall gain stage. opa2134. Boss Katana MKII 50 Justice Pro Lite and Sho Bud Pro II Rolling opa1642, opa1612, muses8920, 2xopa627bp, lme49720na, opa2134. One of them is a linear Is there any better OP than OPA2134 regards Progg70 . To be fair, I did not The OPA2134 is a commonly faked chip. diyAudio 85 votes, 23 comments. but with some opamps i have reduce soundstage (AD823, OPA2134). Edit: It is not always the best solution implementing the fastest OPAmp for I/V! I would like to ask your opinion in replacing OPA2134 for an LME49720 in one DC Servo application? OPA1642 would be a good choice as well. Therefore, between pin 1 and pin 8 should be approx. Normal audio can use the cheaper OPA2134. Misc. Gallery Archive Articles. 80 each, package DIP-8 LM4562, price at Mouser $1. The daughter card allows users to develop multichannel audio applications such as A/V receivers, () User guide: PDF Not available on TI. OPA1642 on SOIC devices free as SAMPLE for R&D and place them on an adaptor that converts from SOIC to dip 8. I should have done my research a bit better because because I overlooked OPA1612 which is purported to have superior performance compared to LM4562. OPA2134 - loudness curve, kicking bass but often no real depth and too fast unnatural cut away yes!, the worst soundstage or imaging, the decay is lost! Everything sounds swapped and cleaned, no distortion, but it sounds filtered to sound rounded, even the sometimes silvery highs don't disturb. (Normally one would probably point to LM4562 as being the best compromise, but I think the Quiescent Current of 10mA is very high) OPA1656 has even lover distortion. I also have 4 OPA2134's. The quick answer to your question is: No. Home The comparison between the LM4562 and NE5532 operational amplifiers (op-amps) is an essential journey into the world of audio electronics, where the intricacies of sound quality and performance are paramount. LM308 (30pF cap): 0. Paste the contents of OPA2134. THS4062 vs 4032: 4062 is not in any way similar to (let alone better than) 4032 when we talk specs that matter to audio performance. 96mA I got for whatever the Tayda chip is/was) Top is fake, bottom is new one. I personally have Either one is overkill, but the difference could be in the speed of the opamp, they could be oscillating at very high frequencies, and/or operate outside of spec limits (the I have an amp with 4 OP275GP's in them. OPA1642 - Slew = 20V/µs OPA2107 - Slew > 9V/µs OPA2134 - Slew = 20V/µs OPA2604 - Slew = 25V/µs OP275 - Slew = 22V/µs RC4559 - Slew = 2V/µs TL022 - Slew = 0. FET input with 2pa input bias. The OPAx132 is the slightly better version for DC critical applications. Any futher recommendations? Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr Below is the measurement of THD vs. Software Tools. Source & Line. Yes, I know everyone likes to think you need GHz op-amps for I/V. Other Parts Discussed in Thread: TLE2082, TLE2062, OPA2134, OPA1652, OPA1654, OPA1642, OPA1644, LM833 I need to source a replacement for 2 2134 op amps in a new preamp design. Good stuff. I'm under the impression that spending more = better amp module = better sound, but I really don't know what to expect. Joined 2005. 4 mA per opamp section, which is significantly less than the 5532. Maybe it wouldn't be the best for something like a DAC I-V converter (or anywhere else it might see edges). All the through-hole resistors I recommend the OPA2132/OPA2134. Posted by u/_GrumbleCakes_ - 2 votes and 5 comments Only really better substitution for NJM4580 for example as Pre-Amp can be no less then OPA2228 or even better OPA1612, but for that -3dB less noise (and distortion) over whole audio spectrum you will have to play premium extra. Before any modifications I use shematics to see what i need to choose between these four Op-Amps. Contributor; Posts: 57; Logged; OPA2604 vs OPA2134 ? December 17, 2014, 02:03:48 PM. This, combined with its high output drive capability and excellent DC performance, qualifies it for a wide range of demanding applications. Bernie7. phi1 Well-known member. If you are into Fet the OPA2641 is even better then the OPA2134. atlechri. Any futher recommendations? Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr The OPA2134 draws 2. Light Terms and rules; Haha, in fact, it makes you wonder if a "better" opamp will yield just as much (or more) improvements over Burson. wintermute. 13 mA Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Share Link. Alternatives to the NE5532 include the NJM4558 and TL072. Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. Member. Member Areas. the lower the noise the more 'air' in the soundstage so I would recommend OPA1642 its noise is way lower than OPA2604. Power Bandwidth: 140 kHz. 0V/µs; FET OPA602 - Slew = 20V/µs; FET OPA2134 - Slew = 20V/µs; FET OPA2205 - Slew = 4. Perhaps OPA1678 will also not be the bottle neck and perhaps will measure similarly to OPA2134 or LM4562NA. Facebook X (Twitter) Reddit Pinterest Tumblr WhatsApp Email Share Link. artsandmedia. The schema is buffer -> potentiometer -> gainstage. Drives 600 Loads . I currently have the AD8610 still in there. Then I also experience the mid range of this OP-270 (Dual OP27's in an 8 pin PDIP), the Burr Brown OPA2134 and original BA4558 that came with the unit. lme49713 vs opa627 vs AD815 vs opa2134 vs opa1612 vs opa2836. The OPA1656 is a newer device with better typical room temperature I'm playing around with some simple headphone amps ( again ) with NE5532 vs. You can use each one of the two for x4 or x10, if you like. OPA2132. Opa2134 isn't a bad opamp, but I don't like if in lpf sections. I can't comment necessarily on the sound comparison. Go Down Pages 1. common mode voltage that I've measured on any op amp. OPA2134 vs OPA2604 vs OPA2107. 2005-03-05 4:09 am #6 2005-03-05 4:09 am #6 The OP275 is already an excellent op-amp. Opa2604 is slightly warmer. 🙂 I would have expected clipping against the power rails to start a few 100mV sooner with the lower +/-5vdc rails. Facebook X Reddit LinkedIn Page 1 of 2. Source & Personally, I like the ne5532 with the cs4398(about the same detail level as the opa2134 subjectively but smoother sounding in my opinion). Copy Comment URL; Report Comment; The OPA2134 isn't a bad choice, its designed for audio, doesn't do anything unexpected and largely produces a very accurate sound but does have the signature "burr-brown" slightly thick and lazy signature and personally I think it is a bit like a musician playing the same tune for the 1000th time - accurate but no longer involved in the music The distortion curves might tell more about what it does at audio speeds, especially with less than 100p on the output. Two identical gain 11 amplifiers were tested. Biasing into Class A For I/V the best one would be the SS V6 (the best from above, not from the market! I find the MUSES01 as being a bit better for I/V), same applies for Low-Pass Filter. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp 30 votes, 13 comments. Something like the OPA1642 might work ok, but it's SMT only as far as I know. Measurements For this testing, I thought any important difference would show up in THD+N (distortion + noise) versus frequency as this is what the data sheet for op-amps emphasizes a lot. 2011-04 I had the chance to gather up a selection of opamps from my parts bin, including BB OPA2604, OPA637, AD823, LME49860, JR4556, Muses8820 and 8920, and compare them against each other along with a Burson V6 OPA2604 vs OPA2134 ? OPA2604 vs OPA2134 ? Started by nognow, December 17, 2014, 02:03:48 PM. discussion. I like opamp rolling, but the dac x6 opamp socket is for the i/v section of the dac and the power supply is very limit(3 parallel icl7660 generating a negative rail for the tpa6120+op275 and the opa2134). But in cases where you have a source with a lot of offset, a DC servo could be a good idea, since that offset would otherwise be amplified by the gain of the OPA2134+BUF634 and appear at the output. Joined 2022 Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. Large Supply Voltage Range: 3. In order to answer this question, we need to learn a bit more about the intended use. 4mA), and its MAX draw is LESS than the 072. georgehifi. however I cannot source an OPA164x at the moment, seems to be some kind of shortage. I also swapped OPA627/37 and the AD8610 in my headamp, however i could tell little to no difference. They are delivered via private courier and it must be signed for, all for free! I also believe you can get some National Devices such as: LME49720, as well because BB bought Curiously enough it seems to sound its best in combination with the OPA2134. 5 Euro OP275 ~ 3 Euro OPA1612 ~ 6 Euro According to specs I would think the OPA1642 would be one of the best compromises cost vs performance wise. The OPA1688 even beats it on noise. Home. Gallery Well, anyway, an OPA1642 has better datasheet specs than an OPA2134---about 4 db less noise, 4 db less distortion, and ~ 1 db more headroom. Or check it out in the app stores I've used OPA2134 (TL072) and TLE2074 (TL074) in some builds, you don't really want the better quality parts if you want clipping and distortion. The AD 823 VS OPA2132 LM 4562 is superior to the OPA2132 are you sure? LME49720 I threw them in the trash together with the LM4562 in crossover use. The OPA2134 doesn't have a specific ground input, just a V+ and V-. pwan. I personally have the DT 990 and have tested it with the OPA2134 and find it requires a power supply of around 8V+ for it to achieve volumes higher than what a desktop PC can deliver. It worked great in place of the OPA2134 though, big difference, thanks again for that tip! New OPA2134 from mouser came today Popped it in and the sound I was hearing is gone, General Tso is perfect now. A true FET input stage is integrated to give increased sound quality and speed for great audio performance. Hello, I just got interested in DIY stuff. The OPA2134 is more a better replacement for the TL072 when you need a FET type. 4032 is clearly better in the following areas: Settling time to 0,01%: 80ns vs 140ns for 4062; OPA2134 vs. 2. Joined 2002. When I do serious listening test between them, just an A - B testing, not back and forth, I found the OPA1642 creates more noise at upper frequency because of those high frequency details. Vendor's Bazaar Paste the contents of OPA2134. The OPA1642 only 1. Light The following two sets of Output Voltage vs. Light Terms and rules; I got curious today and decided to try and see how our old friends compared against the latest and greatest (?) chip. diyAudio Community diyAudio Store It retails for a whopping $94 each! The OPA2134 in contrast costs $4. Output Drive Capability: 600, 10 VRMS. Got these when they first released them b4 the acquisition of LME from National. For example, the OP285 (which I believe is laser trimmed) has a low offset voltage, but higher bias current. It offers exceptional performance in almost any audio application. com. _____ A couple of guitars Fender GTX 100 Fender Mustang III Fender Blues Jr. -- Jim Switching between the Modi+ and D10s, the immediate differences are that the Modi+ has a more solid snap and thump, a significantly more immersive soundscape (with all sorts of reverb and trailing decays filling out the headstage), more granular microdynamics (e. Chip Amps. The opa2134 already installed is neutralish/slighty bassy. Some alternatives to the LM4562 include the OPA2134 and LT1358. Analogue Source. Maybe it would fit your taste too. Rolling opa1642, opa1612, muses8920, 2xopa627bp, lme49720na, opa2134. nognow. I'm currently using an OPA1642 surface mount with adapter and no input caps. May 24, 2020 The OPA2134 is designed to be transparent. I don't like OPA2134 much, so something like AD8620 would have been another good comparison to Burson. it also seems to bring out more soundstage in my grateful dead recordings - those recordings from the 60ies and 70ies still sounded quite flat with the ad823. The OPA1642 is also theoretically the best choice for the unity and x2 stages in the output buffer, although the LME49720 is a very close second. It needs an adapter though. I would presume that this is because of the lower overall noise I would like to ask your opinion in replacing OPA2134 for an LME49720 in one DC Servo application? OPA1642 would be a good choice as well. pfm green (default) Terms and rules; Of course it must be OPA2134 ! Swedish Chef. 7 mA quiescent current is typical of the OPA627, for the OPA2132 it should be typ. Second, you are likely to damage the amplifier boards if you attempt to change them out. Contact us; Terms and rules There will be quite a bit of trade-off between different types of op amps. O. diyAudio Community diyAudio Store. 2014-03-21 6:33 pm #4 2014-03-21 6:33 pm #4 Randy62 said: Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. These Op-Amps are so good, you need a well regulated supply for utilizing best performance. 25 V to ±18 V. Joined 2004. ashok. diyAudio In I/V stage: - MUSES8920 is very balanced and could be used in I/V stages without worries, because this is what this OPAMP has been made for. Joined 2006. If you swap to a more modern op amp it's important to add 0. Forum member KSTR gave me the hint to use a groundplane instead of star ground(s) for signal and power, I tried to develop my own layout. a single EF) for a given level of stability. Joined 2008. I am a little baffled as to why so many people think that rolling op amps is a waste of time, in my experience is most certainly is a beneficial practice. OPA1642, price at Mouser $2. in comparison to the OPA1642, I see that the OPA1656 has slightly less voltage noise but also slightly more current noise; slightly faster and less THD, but worse CMRR. LF353N op amp replacement options for old school Genesis An OPA2134 should work, just be sure to buy from a reputable supplier. -Category Forums. It seems the opa2134 uses at least twice as much current as the TL072. I have used the following as the buffer gain stage between a passive LC filter and the power amp. 48mA so basically exactly matching the datasheet (vs the 0. In the world of audio amplifiers, the opa2134 is often compared with its counterparts. Theme - Light; OPA227 has 2 diodes in series , anti-parrallel = 1,2 V pp, maybe PNP like OPA1662 ( has single anti-parrallel diodes) . DIY (Do-It-Yourself) Discussions. Warm Mids (Deep and Full) . Additionally, 5V isn't really enough for the OPA2134. It was also warmer and more vivid than the OPA2134. Generally - tubby bass, mediocre soundstage, recessed subbands of the midrange and not very detailed treble. 1 2 > Similar Threads. It is actually the warmest opamp among this group. I've been doing a bit of filtering with an OPA2134. Easiest is to replace LF351N and LF353N for the OPA134 and OPA2134 just like the Below is a comparison between OPA1656 and OPA1642. In the case of my two Aiyima a04 and switching between ne5532 amp to lm4562 amplifier, the difference soundwise is clearly bigger than moving your head 30 cm in the listening room. 2004-09-21 11:38 am #12 2004-09-21 11:38 am Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. Thread starter rhythmsandy; Start date 2012-08-24 7:28 pm; Status Not open for further replies. Part Number: OPA1656 Other Parts Discussed in Thread: OPA2134, OPA2604 The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. OPA2134 as a phono preamp? I know it's a really quiet FET opamp, but it's usually OPA1642 is its replacement despite the lower type number. In (LM49720, OP275) reduction is low. OPA2134 Drop-in replacement. OPA2134 gain stage with voltage series feedback. Copy Comment URL; Report Comment; The OPA2134 is an audio-specific low-noise, ultra-low-distortion operational amplifier. Joined 2010. LinkedIn Reddit Pinterest Tumblr WhatsApp Email Share Link. OPA828 / OPA2828 vs OPA627. I have used the opa1642 as a replacement. audio. which would you prefer and why? what are the advantages and disadvantages of each? So yes, I could distinguish a difference in the sound of the three op amps I tested: OPA134, OPA27, and NE5534A. 5 mA. If you're testing an opamp labelled an OP07, you should be able to do this test. No offence but the difference between these two op amps is very much distinguishable. (Opa2134 is not broken in at all, so it will most likely get better w/time) The base is much better from the 2134, but it does not seem to be as powerful on the output side, but could just be the break-in needed. reddit's community for DIY Pedal Builders! With the OPA2134 the DAC was more detailed but the sound lacked body. 0 nV Hz (Typical) DC Voltage Gain: 50000. -dan The JFET input devices give their best noise performance at medium impedances, in the range 1 kΩ–10 kΩ. mason_f8. Every amp. Sound character can even be slightly different on the same op amp but different manufacture. For OPA1642, the output current (limit) appears to increase with increasing temperature. 50 each with pins installed (depends on the quantity I buy - if more than 5 then I´m still chewing on my layout for a 6 channel preamplifier with LM4562 (or OPA2134). We will see the effects of both noise and distortion in one measurement. Opa2134 is a very good opamp. F) JFET-Input Audio Op Amps OPA1642 V. Amplifiers. The slew rate is higher than for the 5532, at 13 V/μs against 9 V/μs. I plan to get the brown dog adapters and try the opa 627's soon. Audio, Audio, Audio! Forum Suggestions and Announcements. op275 upgrade. The OPA2134 is a low-noise, ultra-low-distortion operational amplifier designed specifically for audio applications. The OPA134 also has a With my FW amps it sounds great F6,M2, New V-fet. AD8610 . I like opamp rolling, but the dac x6 opamp socket is for the i/v section of the dac and the power Both devices are very popular and great for audio. But I really like the FET's in that position. Share: Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. 28 times as much (1. But the Spice I have used the following as the buffer gain stage between a passive LC filter and the power amp. power, with @90kHz measuring bandwidth and at frequencies 1kHz, 5kHz, 10kHz and 15kHz. First, the OPA27, which I did not feel sounded as good as the other two here. Previous topic - Next topic. For higher-impedance applications, the FETS rule (the PDIP-8 OPA2134 and the SOIC OPA1642). I guess what puts me in a dilemma is that Burr Brown branding behind the well known OPA2134 vs. 00008 % RL = 600Ω 0. 2 ® OPA134/2134/4134 SPECIFICATIONS At TA = +25°C, VS = ±15V, unless otherwise noted. OPA2134 Power Supply The voltage rating is for the total voltage the chip sees between pins 4 and 8, which is 36 volts for opamps such as this one. This may be the case with low frequency filters. Avoid LM4562/LME49720 and OPA2134/2604 if you do not want to re-engineering circuitry to make it stable. My guess is ifyou stick a tl072 in it you won't see the difference . That said, yes, I did prefer to OPA2134 over other reasonably priced opamps. Maybe the opa is not conducting properly. diyAudio (Digidesign and E-MU. Theme - Light; I tested the opa2134 vs the ad712 that were stock. To deliver improved sound quality and speed for exceptional audio performance, a real FET input stage is included. Low noise opamps need to be used with low noise surrounding circuits though so just rolling in a lower noise opamp Don't get me wrong. ) I did a test, for example, with upgrading a CS4398 DAC from NE5532 to LM4562NA and then OPA2134. Thread starter bmwrob; Start date 2002-05-05 8:35 am; Status This old topic is closed. The Lounge. between NE5532 and TL072/OPA2134. 2020-05-13 8:03 am Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link (Digidesign and E-MU. LME49720 vs OPA1612 vs Muses02. OPA2132 - almost like OPA2134, maybe a bit smoother sound. G'day all, an interesting thread. Parts-: Best audio OpAmps :-diyAudio Community diyAudio Store. OPA1642/4 Alternatives? Supply problems :(diyAudio LM308 (30pF cap): 0. , better presenting the nuances in Dua Lipa's singing in IDGAF) and more fluid easygoing It is the best $1 opamp you can get! Sure, there are opamps that perform better spec-wise---the LM4562/LME49720 is the best PDIP-8 available, only surpassed in the bipolar world by the SOIC-only OPA1612. The OPA1641, OPA1642, and OPA1644 series of operational amplifiers are unity-gain stable and provide excellent dynamic behavior over a wide range of load conditions. Only remember the Ok. Gallery Archive Sometime I use OPA1612, OPA1642 and OPA1622. If you can use a bipolar OP, the NE5532 is usually the better choice than a JFET OPA2132 / OPA2134. LIB onto the schematic, then name the opamp OPA2134. OPA2134 Drop-in replacement then the opa1642 should be as well. Output Current characteristic curves seem to behave in opposite manners. 4 mA, max. I am fond of the bass response and warm tone of the 2134 in my existing designs, but the new application uses phantom power which is limited to a total of 10mA for the complete circuit. include this text, place opamp2 in ltspice and rename it to opa134 ***** OPA2134 vs. For the very small differences likely to be heard between well chosen op-amps, your memory will start to fade in 10 seconds. Input Noise Voltage: 5. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Share Link. The OPA1642 for instance has a diff input voltage max to the supplies. Solid State. Edit: It is not always the best solution implementing the fastest OPAmp for I/V! Interestingly enough +/-5Vdc supplies don't seem to make any difference with that chip vs. Digital Source. 12 V/μs JRC4558: 2. So njm2043(Zin=100kohm) compared with njm2041(200k) and njm2068(300k) while ne5534(100kohm input impedance) vs ne5532(300kohm impedance) shows the same pattern, including the higher bias current for the lower Zin and noise, so actually in a higher input impedance circuit ne5532 is lower noise than ne5534 Wide Supply Range: VS = ±4. 8 vs 1. The Best Sounding DUAL opamps. consists of 2 x 10 op-amps in parallel and the two 10s are OPA2134 is probably a good choice in general. Upgrade's didn't work, fake OPA2134? diyAudio Community diyAudio Store. reddit's community for DIY Pedal Builders! ±2000 V OPA2134 in SOIC Package V (ESD) Electrostatic discharge Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001 (1) ±2000 V Charged-device model (CDM), per JEDEC specification JESD22-C101 (2) ±500 OPA4134 in SOIC Package V My friend would like to replace the ADA-5062-2 with OPA2134 for the I/V Stage, is that a good idea? Thanks! But why not go further and use OPA1642 for its even lower noise? Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. That op amp is not all that bad. I just thought using two opa627, i will achieve 2134's audio quality. Switching op amps is likely to cause as AIYIMA A07 TPA3255 Amplifier Measurements LM4562 option I received my A07 yesterday, on January 6, 2021, shipped from Italy. the TI's LME49860, LME49720. TBH I don't really ever notice much difference in audio between most opamps unless they It sounds somewhat better with wider soundstage and better bass with stereo and instrument separation. ah so much other untested opa's 1678 still on my list ina1620. Price wise, the opa627 is much more expensive than This probably isn’t the answer you want, but I’m going to present it to you anyway. So getting 2 channel stereo left-right preamplifier with your desired needed gain. Digital Line Level. Did you buy them from a reputable parts distributor? If you got them from eBay, Ali, or Amazon and they aren’t meeting specs then they are 100% fake. These three Op-Amps sounds great. NE5532 Features. My favorites at the moment opa1642 and this one opa1656. If you used split (dual rail supplies) you could use any combination up to that that 36V maximum such as -30 and +6 or +12 and -24 and so on. The opa2132 provides high precision, making it ideal for demanding That's interesting, because in my little opamps rolling experiment it did not do very well. If all you need to do is power the op amp, hook 30V to V+, gnd to V-, and you're done - the op amp has no concept of gnd outside of V-, so it doesn't matter if it's 15V and -15V or 30V and 0V. OPA2134 is a far easier drop-in replacement for the TL072. A. tuga Legal Alien. Only remember the Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. The actual non-simulation results will probably be different. Light In simulation, I always had to restrict opamp bandwidth far more with a diamond buffer output (vs. The OPA2134 is not harsh. diyAudio Community diyAudio Store The OPA1642 is the best choice that you can make other than incredibly expensive ones that provide very, very, slightly less noise and higher distortion. OPA1656 is rather interesting for this, and if you like OPA2134 then you probably won't do any worse with OPA1642. The unit is likely to sound best with the OPAMP the circuit was designed for. Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. 0 V/s. Regards Jürgen . General Interest. Paid Member. I listened to OPA2134, LM4562, and NE5532, and OPA2134 sounded the best. So I can use any one of these ( one at a time !). Comparing to the opa627 it is muddy but not harsh. The OP-270 outshined all of them It was more detailed than my 6922 tube based phono preamp. I would recommend OPA2134 or OPA134 and if you have money the The OPA2134 is an op-amp not comparable to the TDA2822, so you cannot use the same circuit and swap out the IC. resistors around the second op-amp to lower the noise? 100kOhm volume pot/feedback resistor seems excessive since OPA2134 and most other sources nowadays (AUX1/2) can easily drive 10kOhm loads. How does it hold up? Let's take a peek! OPA2134 vs. In fact, dual OPA627 on Browndogs would have been something to consider as well. Anyone tried TI version of this 2134 before There will be quite a bit of trade-off between different types of op amps. Reddit's original DIY Audio subreddit to discuss speaker and amplifier projects of lme49713 vs opa627 vs AD815 vs opa2134 vs opa1612 vs opa2836. THD+N Ratio vs Measured Level / Unity Gain / 100k load / 22. Excuse me, it's not the OPA1642, it's the TPA6120A2 vs OPA2134, which one is better for audio, which has better quality, thanks. The original name was probably 2134. It has a modest power consumption at typically 1. I'm not saying you wont hear a difference if you swap the opamp, but whether that difference is better is up to you but objectively the performance is likely to decrease if you replace the opamp, even with an apparently better performing one, if the circuit was designed for another device. OPA2134 measured the best. 4032 is clearly better in the following areas: Settling time to 0,01%: 80ns vs 140ns for 4062; In simulation, I always had to restrict opamp bandwidth far more with a diamond buffer output (vs. What does the power supply for the OpA look like? and I am thinking that something is wrong mechanicaly between the opamp base and the opamp. clear, but still smooth highs. 6SL7 tube SRPP gain stage with voltage shunt feedback. When an opamp is overdriven, the input stage saturates. diyAudio Community diyAudio Store I just A/Bed OPA2134 and LME49720 in the input buffer & output stages of a Bozak ISO-X. R2A + R2B. The voltage noise figure for the NJM4556A *should* be lower, being bipolar input vs. or in any noise-critical circuit. (TL072 was the original. The OPA2134 isn't a bad choice, its designed for audio, doesn't do anything unexpected and largely produces a very accurate sound but does have the signature "burr-brown" slightly thick and lazy signature and personally I think it is a bit like a musician playing the same tune for the 1000th time - accurate but no longer involved in the music OPA2134 Power Supply . Comparison LM4562 vs OPA2134 vs NJM2068 vs NJM4556 LM4562: Strong bass . Technical Forums Excuse me, it's not the OPA1642, it's the TPA6120A2 vs OPA2134, which one is better for audio, which has better quality, thanks. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp The OPA2064 is definitely more musical sounding in my experience compared to many others. It's also not a bipolar op amp (OPA1642 neither). OPA1642 would be my suggestion to upgrade OPA2134, its about half the price from TI but being SOIC would need an adaptor for DIL applications. allhifi, it really isnt worth trying to discuss this sort of thing here, it never leads anywhere. OlegSh. gmarsh. It is worth trying. Status Not open for further replies. Mark Tillotson. I have done this in both the ESP P06 and Muffsy DIY TI’s OPA2134 is a SoundPlusâ„¢ Audio Operational Amplifier with Low Distortion, Low Noise and Precision. The test procedures/instruments industry has a far more than adequate portfolio of tests. Yamaha A-S 2200 making a split secondsound cut (and relay click) when lowering or raising volume (at low volumes) Viriatusrex; Jul 23, 2024; Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. If anything, it has a more 'neutral' sound than the (possibly slightly euphonic) OPA2134, but its performance is very reliable and dependable and of a very high standard, which possibly explains its long standing use in 'professional' audio gear. advertisement. NE5532, LM4562, NJR2114, OPA1602, LME49720, MUSES8820, MUSES8920, OPA2604, OPA1642, OPA2132PA, AD8672, AD8599, MUSES01, MUSES02. 2006-07-05 8:40 am #4 2006-07-05 8:40 am Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. OPA2134 SPICE model. Measurewise there's not really a difference comparing OPA2134. All the through-hole resistors Dunno if they are gonna restock :/. I was just curious what people's thoughts were for that opamp, and if they had any other preferences in terms of quality? I've been using Swapped the Op Amp in my cheap Pyle phono pre to a OPA2134 and am really impressed in the difference. One good example is XU09 portable headphone amplifier. There is something else going on as well. The opa1678 looks like a better chip, as well and it's less than a buck. OPA134PA, UA OPA2134PA, UA OPA4134PA, UA PARAMETER CONDITION MIN TYP MAX UNITS AUDIO PERFORMANCE Total Harmonic Distortion + Noise G = 1, f = 1kHz, VO = 3Vrms RL = 2kΩ 0. Super easy phonostage using OPA2134 and 24V wall-wart the ad8066 is a strange beast. Last edited: 2023-06-14 10:01 pm. This JFET input device is easy to obtain and well regarded, although the input noise isn't quite as low as we might ideally want it to be. In some respects I think of the LM4562 as a somewhat upgraded NE5532. Print. If you look at the PCM1704 datasheet filter circuit you'll see TI didn't recommend it, but did use it for the output The JFET input devices give their best noise performance at medium impedances, in the range 1 kΩ–10 kΩ. the sound coming from it seems to be very delicate, yet refined, and some good bass. The TL072 is a dual opamp. 5V/µs ~ 0. Lemme know how this goes. TBH I don't really ever notice much difference in audio between most opamps unless they In I/V stage: - MUSES8920 is very balanced and could be used in I/V stages without worries, because this is what this OPAMP has been made for. Other Audio Amplifiers. 79 in single units. 0V/µs; FET OPA2604 - Slew = 25V/µs; FET LinkedIn Reddit Pinterest Tumblr WhatsApp Email Share Link. The DAC is a TDA1541. 5 times as much (5 vs 1. Biasing into Class A Switched over to OPA1642 just because of that (that one sounds fine as well). OPA2134 OP amps. General Questions. andyjevans. If you just wanted to use a single 5V supply, the OPA1671 is good. BTW it is a real pity OPA2828 does not exist in SOIC. You must search for OPA2134, not OP2134 This is an excerpt of my default lib. Design & Build. Details; Discussions; Posts; This discussion; 10,312 posts. Facebook Twitter Reddit For high freq the OPA2134 is suppose to beat the TL072 in performance, the 2134 probably won’t show up in a low pass and you can save $$ for using the better opamp where it will make more difference. Reactions: gizza. Thanks Jim! I think I tried the AD8512 in place of the OP275 a few weeks ago and ran into serious problems with offset and distortion. So far it doesn't save me any money though. Get the Reddit app Scan this QR code to download the app now. Reactions: cdwillis and FancyEspresso. High Performance Audio Operational Amplifiers with FET inputs OPA2134 The first time I did test with opa1642 opa2156(precision opamp version of opa1656) opa1612. Parts Get the Reddit app Scan this QR code to download the app now. 2007-03-05 5:03 pm Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link Like OPA2134 or whatever. OPA2134 vs. 85 votes, 23 comments. These devices operate over a very wide supply voltage range of ±2. Topic: OPA2134 Op Amp Evaluation and comparison; Jack Stoner. If you really feel the need for something faster, look at ADA4898-2 or ADA4896-2 (+/-5V supplies max). B. User actions. This particular circuit has another problem - the value of R14 is silly, increasing impedance imbalance between the opamp input terminals even more. M. 4kHz bandwidth Again here we see that the LM4562, LM833, LM49720 and OPA2134 all have the same level of performance with the NJM2742 having the worst performance of the bunch and the LT1352 being just slightly worse. 85 times as much quiescent current as the stock TL072 (4mA vs 1. Thread starter moonlightpedalbuilds; Start date Jul 22, 2022; moonlightpedalbuilds Well-known member Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Share Link. Simulation model. View community ranking In the Top 5% of largest communities on Reddit. Especially since it's a jfet input that roundly outperforms the 2134 . I am testing the A07 with 2 different power supplies. Extended highs, removal of grain, more smoothness and (especially) inner detail are definitely on the table. It was designed (as of course were others) for audio and differs in that the distortion spectrum it produces has the even harmonics predominating. Also, the internal noise is quite low and comparable with The OPA1641 would be slightly better. 06-18-2019 at 06:01am . You could try an OPA2134 if you don't want to deal with an SOIC to DIP adapter. Since i couldnt find an opa2134, i just use tl072 and the likes for our projects I am just curious how opa2134's output performance. The 2227 and 2228 are pretty laid back, like most opa's, but they are revealing and agressive like the 8620. Small-Signal Bandwidth: 10 MHz. The OPA1642, SMT-only, is also a good dual BIFET. Audio, Audio, Audio! Amplifiers, Phono preamp, and Analog Audio Review. The power supply used was Meanwell SMPS RS-100-24 set to 27Vdc output voltage. As seen in the photo, there's also a pair of LM317T regulators which I assume are used as some type of CCS for the 510's. . Reddit's original DIY Audio subreddit to discuss speaker and amplifier projects of I have used the following as the buffer gain stage between a passive LC filter and the power amp. For OPA1652, the output current (limit) appears to decrease with increasing temperature. The uppgrade to lm4562 is a no-brainer if youre interested in hifi, and clearly worth 5 dollars . Tested the OPA1642 for the I/V of D10. Gallery Archive OPA1642 ~ 2 Euro OPA1656 ~ 2. AD826 used instead of the the OPA2134. 5 to ±24 V. 0 to 20 V. I found a photo of a commercial design, that uses a OPA2134 along with a pair of IRF510's for the output, that I would like to build and try. Not sure a guitar effect could do it justice. But,the OPA2134 might be a suitable upgrade. rs At it's heart it uses the OPA2134 op-amp. 2 V/μs LM833: 7 V/μs CA3130: (56pF cap): 10 V/μs TL072: 13 V/μs OPA2134: 20 V/μs Keep in mind that once you have more slew-rate than you need, nothing is gained by having an even higher slew-rate. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Comparison LM4562 vs OPA2134 vs NJM2068 vs NJM4556 LM4562: Strong bass . If you want to reopen this topic, contact a moderator using the "Report Post" button. If a person can hear a difference in electronic circuits, there are tests that can easily measure that difference. Probing between pin 1 and 7 should yield R2A, while between pin 7 and 8 you should find R2B. AD8610. 4062 is 180MHz vs 100MHz (4032); Slew Rate 400 vs 100V/us, but there the rally ends. OPA1642, OPA1678, OPA827, and the newer OPA828, or also OPA2810. OPA1642 - Slew = 20V/µs; FET OPA205 - Slew = 4. de and as stated on their website, it arrived without a power supply. OPA2134 - quite good OPA2132 - quite good NE5532 - OK but not special Facebook X (Twitter) Reddit Pinterest Tumblr WhatsApp Email Share Link. It is a really nice-sounding chip in the right place, but man it is expensive and you can get nearly there for a lot less in trouble as well OPA1642 - Slew = 20V/µs OPA2107 - Slew > 9V/µs OPA2134 - Slew = 20V/µs OPA2604 - Slew = 25V/µs OP275 - Slew = 22V/µs RC4559 - Slew = 2V/µs TL022 - Slew = 0. Basically, the 2228, to me at least, is the perfect blend between the BB sound and the AD sound. Car Audio. It may or may not sound at all noticeably better than a TL072, it depends on the circuit and application. My own conclusions with MUSES: In I/V stage: Muses02 vs BB The THD+N of the 1688 should be better too, best I can tell comparing the datasheet graphs vs. High Performance Audio Operational Amplifiers with FET inputs OPA2134 I've seen people use OPA1642/1644 a replacements for the NJM4580s and TL074s on these amps. As long as your not using them for military purposes. Is there any better OP than OPA2134. the O2 dScope measurements that NwAvGuy posted. It is the thing that is closest to the "tube" sound. LME49720 +/- 0. quite opposite actually :-) Anyway, I went looking for Burr-Brown OPA2134PA, but instead found Texas Instruments OPA2134PA on digikey (part# OPA2134PA-ND). But it IS more expensive and SOIC only. It's also overkill in the extreme. OPAx134 PSpice Model (Rev. mazdapowered. As mentioned previously the OPA2134 in BIFET is a decent performer. Just received a message from Digikey that the OPA2134 in various forms is being obsoleted. They should all sound the same. The sound is much better but there's still something a bit "hi-fi" and "grey" in the presentation. Although I am a fan of the OPA2134, I still have very considerable respect for the NE5532. I do this usually since it's the fastest way to get a simulation running. I've studied around in different forums and found information about Dry, crisp, analytical and non-intrusive (as compared to the bold NE5532) is what I would describe this opamp as. An op amp is part of a larger circuit and is chosen because its specs match those required for the circuit. Same with the OPA627 though. Try it out. OPA1642 ~ 2 Euro OPA1656 ~ 2. 65 each, package DIP-8 9. OPA2134 Drop-in replacement . If you exchange the opamps you won't be able to hear the difference. ieydw pfgsov kxiahpji tslptn akujbg tsxfxp cefrkxp xebb rrjssw ttenojt