Opa2134 vs opa1642 reddit As for BB OPA2134 sound, it sounds better to me than the R4580 and is less fatiguing. Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. Facebook X (Twitter) LinkedIn Reddit The OPA2134 is a fast-ish opamp, and can't handle long or high inductance power supply connections. If you swap to a more modern op amp it's important to add 0. Facebook X (Twitter) Reddit Pinterest Tumblr WhatsApp Email Share Link. If a FET-input amplifier is required for low bias http://www. LF353N op amp replacement options for old school Genesis . For OPA1642, the output current (limit) appears to increase with increasing temperature. My Technics SU-V9 is having relay issues, and needs a recap, and possible I'm currently using an OPA1642 surface mount with adapter and no input caps. Contributor; Posts: 57; Logged; OPA2604 vs OPA2134 ? December 17, 2014, 02:03:48 PM. In (LM49720, OP275) reduction is low. It has a replacement DIP8 socket and also has the 47uF output cap removed. 6 KB · Views: 154 Last edited: Dec 19, 2023. The uppgrade to lm4562 is a no-brainer if youre interested in hifi, and clearly worth 5 dollars . Purchased at Amazon. Digital For the very small differences likely to be heard between well chosen op-amps, your memory will start to fade in 10 seconds. Anyone tried TI version of this 2134 before Serge VCFS - OPA2604 vs OPA2134? From circuitbending to homebrew stompboxes & synths, keep the DIY spirit alive! Moderators: Kent, Joe. OPA1642, OPA1678, OPA827, and the newer OPA828, or also OPA2810. Status Not open for further replies. 2023-01-28 2:11 pm #5 Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. The 2132 has better specs and is felt by most who have heard them compared to sound slightly better. One of them is a linear Okay so I've been comparing the micro stack, ultra micro stack and the basic desktop amps. 1 with file provided by the late ArnyK: foo_abx 1. General Interest. Haha, in fact, it makes you wonder if a "better" opamp will yield just as much (or more) improvements over Burson. OPAx134 PSpice Model (Rev. If only two mics ? Latest: nbuford; 17 minutes ago I ask this as although I have used many OPA2134's over the years I have seen a few that appear to be 'sub standard' in some respects (noisy for example). I've been doing a bit of filtering with an OPA2134. reddit's community for DIY Pedal Builders! 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. The advice was: . 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 quick answer to your question is: No. Amplifiers. Car Audio. Something like the OPA1642 might work ok, but it's SMT only as far as I know. Just received a message from Digikey that the OPA2134 in various forms is being obsoleted. Hello, I have on hand 3 OPA1642s. AD8610. These sound great and outshine many of the other modern high performance audio opamps out there today. The OPA1642 for instance has a diff input voltage max to the supplies. The OPA1642 is not a 'cheap' amplifier, but it is very clean, and seems to behave well, even in a non-inverting application. The OPA 627 is well over price and is bass heavy and it’s not worth the price you pay for it The OPA1612 and OPA827 are much better than any of Behind the 2228, the 2604 is my favorite BB opamp that I have heard (I have yet to hear the 627). Technical Forums. Maybe the opa is not conducting properly. OPA2134 is a far easier drop-in replacement for the TL072. Audio, Audio, Audio! Amplifiers, Phono preamp, and Analog Audio Review. Is there any better OP than OPA2134. The OPA1642 only 1. Avoid LM4562/LME49720 and OPA2134/2604 if you do not want to re-engineering circuitry to make it stable. I tested the opa2134 vs the ad712 that were stock. Gallery While not necessary in this circuit, I'd recommend OPA1652, OPA1642, or OPA1688 as FET-input op amps instead of the OPA2134 for audio signal path applications. 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. 4 mA, max. I plan to get the brown dog adapters and try the opa 627's soon. 25 V to ±18 V. The test procedures/instruments industry has a far more than adequate portfolio of tests. mazdapowered. 7 mA quiescent current is typical of the OPA627, for the OPA2132 it should be typ. Print. This is a dual of the 134. OPA2134 Drop-in replacement. however I cannot source an OPA164x at the moment, seems to be some kind of shortage. If the piano tone is right, I find most other tonalities are also good. This particular circuit has another problem - the value of R14 is silly, increasing impedance imbalance between the opamp input terminals even more. Facebook Reddit Pinterest Tumblr WhatsApp The JFET input devices give their best noise performance at medium impedances, in the range 1 kΩ–10 kΩ. OPA2132 is not identical to OPA2134 " except offset" as Groner claimed. OPA1642 on SOIC devices free as SAMPLE for R&D and place them on an adaptor that converts from SOIC to dip 8. The 2227 and 2228 are pretty laid back, like most opa's, but they are revealing and agressive like the 8620. But it IS more expensive and SOIC only. It seems the opa2134 uses at least twice as much current as the TL072. The 2134 is an "audio" op-amp, meaning that it is a de-rated 2132. That op amp is not all that bad. Additionally, 5V isn't really enough for the OPA2134. ±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? W. Joined 2014. 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. If you want to reopen this topic, contact a moderator using the "Report Post" button. It sounds swell but I have a set of the higher performance LMA49720NA DIP-8 opamps here on my desk and I'm wondering if they're plug-in compatible. Then I also experience the mid range of this Get the Reddit app Scan this QR code to download the app now. Comparison LM4562 vs OPA2134 vs NJM2068 vs NJM4556 LM4562: Strong bass . I have a phono preamp board with three socketed DIP-8 OPA2134 in it. Both fet based opamps sounds a little bit more solid in the bass(not quantity but the imaging and the texture). That's interesting, because in my little opamps rolling experiment it did not do very well. allhifi, it really isnt worth trying to discuss this sort of thing here, it never leads anywhere. N. 0V/µs; FET OPA2604 - Slew = 25V/µs; FET LinkedIn Reddit Pinterest Tumblr WhatsApp Email Share Link. TBH I don't really ever notice much difference in audio between most opamps unless they I was wondering how big difference there is between 2132 and 2134 as the first one is almost twice the price of 2134. This, combined with its high output drive capability and excellent DC OPA2134 vs. I guess what puts me in a dilemma is that Burr Brown branding behind the well known OPA2134 vs. Source & Line. I know there are a lot of factors that set these apart, but I'm writing to ask what difference the amp modules make. Light The OPA1642, SMT-only, is also a good dual BIFET. The opa2134 already installed is neutralish/slighty bassy. Input is SPDIF via a V-Link, and a V-PSU was used. Every amp. NE5532 or OPA2134. I've tried the lme49720 on a few dac and had the sameish experience as you. 2. 5 mA. A true FET input stage is integrated to give increased sound quality and speed for great audio performance. I too find that the OPA1612 and OPA1642 are fantastic upgrade/replacements in a whole lot of professional and consumer audio gear out there equipped with comparatively outdated opamps. Overall, the OPA1642 is a MUCH better choice. LME49720 +/- 0. OPA2134 Drop-in replacement then the opa1642 should be as well. General Questions. com/product/OPA1642, the OPA1642 can be used fully diferential (balanced) to a studio monitor or amp, just like the Better sounding is subjective and really depends on context. I have used the opa1642 as a replacement. But,the OPA2134 might be a suitable upgrade. Joined 2003. Gallery Archive Articles G'day all, an interesting thread. ti. 860. 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. Forum Style The THD+N of the 1688 should be better too, best I can tell comparing the datasheet graphs vs. OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers 1 1 Features 1• Superior Sound Quality • True JFET Input Operational Amplifier With Low Input Bias Current • Low Noise: 5. The LM324 might work, but it's probably noisier than you want, and has terrible crossover artifacts (non-linearity, distortion). 28 times as much (1. 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. 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. consists of 2 x 10 op-amps in parallel and the two 10s are OPA2134 is probably a good choice in general. If you can use a bipolar OP, the NE5532 is usually the better choice than a JFET OPA2132 / OPA2134. As mentioned previously the OPA2134 in BIFET is a decent performer. Only remember the lower supplyvoltage of +/-13V. The TL072 is a dual opamp. the lower the noise the more 'air' in the soundstage so I would recommend OPA1642 its noise is way lower than OPA2604. Personally, I like the ne5532 with the cs4398(about the same detail level as the opa2134 subjectively but smoother sounding in my opinion). I'm under the impression that spending more = better amp module = better sound, but I really don't know what to expect. There will be quite a bit of trade-off between different types of op amps. Just sold these 4 pedals!!! upvotes 85 votes, 23 comments. I also think that op-amp rolling is rather fun, even if the only op I found to be sounding clearly better than ne5532, was the lm4562 ( the others I tried: opa1642 opa2134 and opa1612 ) Last edited: Oct 2, 2021 Hello, I just got interested in DIY stuff. Technical 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. A question for opamp gurus. com/product/OPA2134 OR http://www. It is worth trying. Output Current characteristic curves seem to behave in opposite manners. F) JFET-Input Audio Op Amps OPA1642 Rolling opa1642, opa1612, muses8920, 2xopa627bp, lme49720na, opa2134. Personally, my hearing isn't good enough (or my circuits are bad enough) to hear the difference. It has a modest power consumption at typically 1. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link In simulation, I always had to restrict opamp bandwidth far more with a diamond buffer output (vs. Noise is almost same as with LM4562 and there are no problems with distortion. The R4580 is probably better spec wise but sometimes distortion of a signal to make it warmer (quieter treble) is a good thing. So I can use any one of these ( one at a time !). The DAC is a TDA1541. The 5534 is probably fine; but I would replace the 4558s with LM4562s. diyAudio This probably isn’t the answer you want, but I’m going to present it to you anyway. 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. Switching op amps is likely to cause as I have used the following as the buffer gain stage between a passive LC filter and the power amp. The best solution is to use NE5532 in I/V-stage and LM4562 in 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. Some alternatives to the LM4562 include the OPA2134 and LT1358. Music sounded a bit constrained, deadened sense Rolled in some different op amps. It's also overkill in the extreme. 1 nV/√Hz at 1 kHz Op-Amps 4558 vs TL072 vs OPA2134 vs 5532 vs LM741 vs LM833 vs LF353 vs OP07. 06-18-2019 at 06:01am . max Vos of 0. 4mA), and its MAX draw is LESS than the 072. and lm4562(2006) also old headphones sen hd650(2003) beyer dt990(1985). the O2 dScope measurements that NwAvGuy posted. 1uf Compare the plastic mould and the lead frame points at the edge of the amps - the "new" amp mould is rounded and the visible frame pin points are more spaced apart (ok it is dificult to see on the pic) compared to tighter spacing on the original OPA2134. Latest posts. Solid State. Although I am a fan of the OPA2134, I still have very considerable respect for the NE5532. Part Number: OPA1642 Other Parts Discussed in Thread: DIP-ADAPTER-EVM, OPA2134, RC4558, TL072. Copy Comment URL; Report Comment; I agree that it isn't easy to determine what is "better". com. Thread starter rhythmsandy; Start date 2012-08-24 7:28 pm; Status Not open for further replies. If a person can hear a difference in electronic circuits, there are tests that can easily measure that difference. OPA2134 gain stage with voltage series feedback. quite opposite actually :-) Anyway, I went looking for Burr-Brown OPA2134PA, but instead found Texas Instruments OPA2134PA on digikey (part# OPA2134PA-ND). The OPA2134 doesn't have a specific ground input, just a V+ and V-. Design & Build. 3. I think I used a NE5532 in my KOT. Prefer the OpA2134 over these. Simulation model. Forums. Both are significant improvements over the LF353. 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. By continuing to use this site, you are consenting to our use of cookies. Depending on the actual application circuit, there are alternatives with better noise performance. so they're used for I - V and bal - unbal converting. great results running OPA2134's with at least 470uf Nichicon & 0. FET input with 2pa input bias. As long as your not using them for military purposes. but with some opamps i have reduce soundstage (AD823, OPA2134). 47uf PP film directly from each chip's supply pins to ground. I have tried muse02, muse 8920 didnt feel they were worth the hype or price. 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 The OPA1642 has more open at the high frequency, it is more detail but it noticeable sharp and edgy sound. Serge VCFS - OPA2604 vs OPA1642 - Slew = 20V/µs; FET OPA205 - Slew = 4. An op amp is part of a larger circuit and is chosen because its specs match those required for the circuit. Gallery 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. According to the web site it is doc to use the OPA2134. They do sound differently on different type of loads and i'm not a golden ear. ±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 You only have one audio opamp, the OPA2134, and one kinda-acceptable opamp, the LMV358. Basically, the 2228, to me at least, is the perfect blend between the BB sound and the AD sound. So far it doesn't save me any money though. 69K subscribers in the diypedals community. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. 4. diyAudio Community diyAudio Store. So yes, I could distinguish a difference in the sound of the three op amps I tested: OPA134, OPA27, and NE5534A. The slew rate is higher than for the 5532, at 13 V/μs against 9 V/μs. Upgrade's didn't work, fake OPA2134? diyAudio Community diyAudio Store. Normal audio can use the cheaper OPA2134. Low noise opamps need to be used with low noise surrounding circuits though so just rolling in a lower noise opamp In 2022 one would suggest OPA1642 and OPA1656 methinks. 8 vs 1. which would you prefer and why? what are the advantages and disadvantages of each? I've just done listening tests on a bunch of op-amps in the output of my V-DAC, which originally comes with a NE5532. Parts. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. Opa2134 isn't a bad opamp, but I don't like if in lpf sections. A modern chip like an OPA2134 or LF353 would be better. I don't like OPA2134 much, so something like AD8620 would have been another good comparison to Burson. 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 Classic (thanks to them for sending me an evaluation). the TI's LME49860, LME49720. . Good to see so many on this forum liking this opamp. The LMV358 is good for a little signal generator, but falls short of high-fidelity audio. Member. Mark Tillotson. Before any modifications I use shematics to see what i need to choose between these four Op-Amps. Previous topic - Next topic. 4 mA per opamp section, which is significantly less than the 5532. Facebook Twitter Reddit Pinterest Engineers apply the knowledge of math & science to design and manufacture maintainable systems used to solve specific problems. And if they were offered in a DIP Ok. Anything other than these values and they're either fake or damaged (or both). By georgehifi March 22, 2022 in Stereo Amplifiers & Pre-Amps Share This is how I got a set of these including OPA1642 and OPA827. Edit: It is not always the best solution implementing the fastest OPAmp for I/V! lme49713 vs opa627 vs AD815 vs opa2134 vs opa1612 vs opa2836. Theme - Light; JFET OPamps like OPA2134 can replace most any other audio opamp. 51 each, package SOIC-8 It does everything very well and I would rate this chip slightly above the opa2134/LM4562 combo. 13 mA Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Share Link. 4mA). 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. , luketeaford. 3. (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. Home The OPA2134 draws 2. LM4562 and NE5532 show almost identical performance in I/V stage, while OPA2134 is 2 dB weaker. 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. 7mV max still wins 🙂 . The OPA1642, SMT-only, is also a good dual BIFET. One good example is XU09 portable headphone amplifier. In other words, OPAx132PA and OPAx132UA (standard grades) are equivalent to OPAx134, which does NOT have a high grade. The 4558 isn't a great piece of equipment. WFCkeyman. View community ranking In the Top 5% of largest communities on Reddit. Similar Sound compared to OPA2134 but Bass is little better under control. AD8610 . OPA1642 ~ 2 Euro OPA1656 ~ 2. Technical Expert. FET on the OPA1688, but strangely it is actually higher at 10nV/sqrt(Hz). WTB: Something a little better than OPA2134s. g. I have some extra TLE2072 so I may change out the OPA2134 in the buffer positions as there are now new sockets installed in all positions. 85 times as much quiescent current as the stock TL072 (4mA vs 1. The OPA2134 is very ordinary, I consider it a side step to the NE5532. Alternatives to the NE5532 include the NJM4558 and TL072. 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. 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. 30 votes, 13 comments. ah so much other untested opa's 1678 still on my list ina1620. Especially since it's a jfet input that roundly outperforms the 2134 . The opa1678 looks like a better chip, as well and it's less than a buck. The daughter card allows users to develop multichannel audio applications such as A/V receivers, () User guide: PDF Not available on TI. OPA2134 is basic hi quality Op-Amp and all rounder Op-Amp with great sound. 4032 is clearly better in the following areas: Settling time to 0,01%: 80ns vs 140ns for 4062; OPA2134 is a FET opamp and has its own unique benefits but isn't as low noise as R4580. 77K subscribers in the diyaudio community. If you just wanted to use a single 5V supply, the OPA1671 is good. 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. It will oscillate at a high frequency, and (though inaudible because of the high frequency) will distort audio in a very atonal way. The sound quality comes from the entire circuit, not the op amp. Christer. C. 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. In order to answer this question, we need to learn a bit more about the intended use. Will it harm the rest of the amplifier? The TI OPA2134 looks like an easy drop-in replacement for the original NJM4580D, but what has me puzzled is the advise I found on upgrading the power supply caps for the OPA2134s. Joined 2006. Second, you are likely to damage the amplifier boards if you attempt to change them out. For me it's mostly a question of realistic grand piano tone. From my reading on this subject, it seems that many fake The first time I did test with opa1642 opa2156(precision opamp version of opa1656) opa1612. NE5532 is dual channel opamp, so you can try few of these: opa2134, LM4562, opa1642, opa1656 without burning too much money on rolling opmaps. newer opa1642 (2009) and sennheiser hd660s(2017) not better or improvement, Just different Reddit Pinterest Tumblr WhatsApp Email Share Link. Home An OPA2134 should work, just be sure to buy from a reputable supplier. 5V/µs ~ 0. If you exchange the opamps you won't be able to hear the difference. 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. 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 As Mark pointed out OPA1612 is a terrific sounding opamp. Light Terms and rules; Difference between 24/96 kHz and 16/44. de and as stated on their website, it arrived without a power supply. Warm Mids (Deep and Full) . 6 posts • Page 1 of 1. TI’s OPA2134 is a SoundPlus™ Audio Operational Amplifier with Low Distortion, Low Noise and Precision. 2020-05-13 8:03 am Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link OPA1641, OPA1642, OPA1644 SBOS484D –DECEMBER 2009–REVISED APRIL 2016 OPA164x SoundPlus™ High-Performance, JFET-Input Audio Operational Amplifiers 1 1 Features 1• Superior Sound Quality • True JFET Input Operational Amplifier With Low Input Bias Current • Low Noise: 5. , luketeaford, Kent, Joe. Interesting on the 'high impedance' aspect, but again why does that make a difference? The original thread starter stated opa2134. This may be the case with low frequency filters. LM4562 is the best performer in differential amplifier. I just thought using two opa627, i will achieve 2134's audio quality. andyjevans. Gallery Archive Articles. 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 AIYIMA A07 TPA3255 Amplifier Measurements LM4562 option I received my A07 yesterday, on January 6, 2021, shipped from Italy. Two cases were evalutated – in a The main difference between OPAx132 and OPAx134 is in DC precision of the high grade of OPAx2132P/U and OPA2134 (e. 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. Home. The OPA2134 is more a better replacement for the TL072 when you need a FET type. Misc 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. 1 nV/√Hz at 1 kHz The Silicon Chip High Fidelity preamp for 2 channel is based on the OPA2134, and is available via the Altronics franchise. Share: Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. Same with the OPA627 though. Joined 2018. jpg. Now there are both Bipolar and JFET OPs of many types. They are delivered via private courier and it must The following two sets of Output Voltage vs. So far I've stayed with conventional op-amps like LT1361, Tested the OPA1642 for the I/V of D10. OPA1642/4 Alternatives? Supply problems :(diyAudio The LF353 should be replaced with an upgraded FET opamp---an OPA1642 if you can deal with a SOIC-to-DIP adaptor; an OPA2134 if you want a DIP. But even there sometimes a TL072IP or even RC4558 can be sufficient and much cheaper without any difference. OPA2134's input JFETs are not dielectrically isolated, and therefore exhibit a changing input capacitance with variations in common mode voltage. The second one could be a bipolar type with good drive Serge VCFS - OPA2604 vs OPA2134? From circuitbending to homebrew stompboxes & synths, keep the DIY spirit alive! 6 posts • Page 1 of 1. You could try an OPA2134 if you don't want to deal with an SOIC to DIP adapter. nognow. The third choice would be 2277 but i believe 2134/2132 would be better? I'll be running the Cmoy at 18v, the gain at the moment is about 2 but i might try to increase it as i've added a pot now. It's a better chip. Any project fired up with the OPA 2134 is going to impress due to the cost. For OPA1652, the output The OPA2134 is an op-amp not comparable to the TDA2822, so you cannot use the same circuit and swap out the IC. 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. 2021-10-07 10:05 am #3 2021-10-07 10:05 am Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. So there is no 100% garantee it will work LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. 8 mA, for the OPA2134 typ. 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. Got these when they first released them b4 the acquisition of LME from National. AskEngineers is a forum for questions about the technologies, standards, and processes used to design & build these systems, as well as for questions about the engineering profession and its many disciplines. OPA2134 vs. It may or may not sound at all noticeably better than a TL072, it depends on the circuit and application. Bipolar or not. Are you using the op amp in a distortion, phaser, fuzz, delay? Is it acting as a gain stage or buffer? There are several "higher Swapped the Op Amp in my cheap Pyle phono pre to a OPA2134 and am really impressed in the difference. The OPA1688 even beats it on noise. breadman Common Wiggler Posts: 178 Howdy. georgehifi. 2 2014/07/24 20:27:41 Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. The voltage noise figure for the NJM4556A *should* be lower, being bipolar input vs. 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. Serge VCFS - OPA2604 vs Serge VCFS - OPA2604 vs OPA2134? From circuitbending to homebrew stompboxes & synths, keep the DIY spirit alive! Moderators: Kent, Joe. 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. Any futher recommendations? Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr 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. breadman Common Wiggler Posts: 178 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. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Share Link. Details; Discussions; Posts; This discussion; 10,312 posts. 4 report foobar2000 v1. 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). (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. breadman Common Wiggler Posts: 178 Joined: Mon Jun 18, 2012 11:22 pm Location: NY. If you don't mind adapters, the smd version of the opa2134 is cheaper. NE5532, LM4562, NJR2114, OPA1602, LME49720, MUSES8820, If you have an electronic circuit design or repair question, we're good; but if this this a general question about electric motors, motor capacitors, fans, servos, actuators, generators, solenoids, electromagnets, using motor drivers, stepper drivers, DC controllers, electronic speed controls or inverters (other than designing or fixing one), please ask in r/Motors. Onkyo DX710 Op Amp mods asking advice. Not sure a guitar effect could do it justice. the opa2134 are actually cheap and maybe give some sonic differences, but I have read that even high-end brands use the ne5532 I am, gonna switch the opamps in my CD player soon with opa2134 (are reaaaaal low budget types) but I would like more to change the cap's to high-end types, their influence non-lineairuty is understandeble and evident, while the maybe modern production 3886 are all above average? the designs seem to take the 'typical' GBW spec as the effective minimum My guesstimate puts the safe with production variation margin local closed loop gain corner as low as test_OPA1642 vs OPA2134. Swap Meet. M. OPA2604 vs OPA2134 ? OPA2604 vs OPA2134 ? Started by nognow, December 17, 2014, 02:03:48 PM. AD826 used instead of the the OPA2134. I have done this in both the ESP P06 and Muffsy DIY Serge VCFS - OPA2604 vs OPA2134? From circuitbending to homebrew stompboxes & synths, keep the DIY spirit alive! 6 posts • Page 1 of 1. 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. Most of my experience with the listed op amps is from dirt pedals anyway. Digital Source. Light These devices operate over a very wide supply voltage range of ±2. From: Thanks Jack I can hear a difference I will be getting some of the 2134's in my Nashville 1000 here soon. Posted by u/_GrumbleCakes_ - 2 votes and 5 comments OPA2134 doesn't quite have this advantage but has other good points. older NE5532 from Philips with ceramic packing is better warm,i use opa2134 and found same problem like you,sound is too drier,better high but lost in mid and low bass Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. Joined 2002. _____ A couple of guitars Fender GTX 100 Fender Mustang III Fender Blues Jr. In some respects I think of the LM4562 as a somewhat upgraded NE5532. Just found a space to test AIYIMA A07 with OPA2134 opamp. opa2134. Sometime I use OPA1612, OPA1642 and OPA1622. Thread starter moonlightpedalbuilds; Start date Jul 22, 2022; moonlightpedalbuilds Well-known member Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Share Link. Opa2134 is a very good opamp. User actions. 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. First, the OPA27, which I did not feel sounded as good as the other two here. The OPA2134 is an audio-specific low-noise, ultra-low-distortion operational amplifier. High Performance Audio Operational Amplifiers with FET inputs OPA2134 This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. 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. For example, the OP285 (which I believe is laser trimmed) has a low offset voltage, but higher bias current. Vendor's Bazaar With the OPA2134 the DAC was more detailed but the sound lacked body. Joined Apr 6, 2018 Messages 11,785 Likes 28,702 Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. 5 times as much (5 vs 1. 0V/µs; FET OPA602 - Slew = 20V/µs; FET OPA2134 - Slew = 20V/µs; FET OPA2205 - Slew = 4. or in any noise-critical circuit. Chip Amps. Someone expressing his subjective listening impression doesn't mean it's actually the case, unless he posts Below is a comparison between OPA1656 and OPA1642. I am testing the A07 with 2 different power supplies. 4062 is 180MHz vs 100MHz (4032); Slew Rate 400 vs 100V/us, but there the rally ends. breadman Common Wiggler Posts: 178 Serge VCFS - OPA2604 vs OPA2134? From circuitbending to homebrew stompboxes & synths, keep the DIY spirit alive! Moderators: Kent, Joe. Parts "OPA1612 vs LME49720" opamp comparison "OPA1612 vs LME49720" opamp comparison. Yes, there are tiny differences in the specs but you'd need extensive test equipment to be able to measure the difference. Reddit's original DIY Audio subreddit to discuss speaker and amplifier projects of OPA2134 and NE5532 both have power supply currents of about 4mA per channel, and have been widely adopted in the market (understatement). 5mV vs 2mV, respectively). Forum Style Topic: OPA2134 Op Amp Evaluation and comparison; Jack Stoner. Two identical gain 11 amplifiers were tested. Facebook X Reddit It sounds somewhat better with wider soundstage and better bass with stereo and instrument separation. Measurewise there's not really a difference comparing OPA2134. I listened to OPA2134, LM4562, and NE5532, and OPA2134 sounded the best. lme49713 vs opa627 vs AD815 vs opa2134 vs opa1612 vs opa2836. Go Down Pages 1. Boss Katana MKII 50 Justice Pro Lite and Sho Bud Pro II OPA2134 Drop-in replacement . I should have done my research a bit better because because I overlooked OPA1612 which is purported to have superior performance compared to LM4562. diyAudio Community In a final step I am working on soldering some OPA1642 into adapters and over time will replace the remaining OPA2134 opamps with the OPA1642 to reduce the current draw. Opa2604 is slightly warmer. My favorites at the moment opa1642 and this one opa1656. OPA1642, price at Mouser $2. Except opa1656 rest of opamps are available on rsdelivers. Light Terms and rules; I've seen people use OPA1642/1644 a replacements for the NJM4580s and TL074s on these amps. I'm with Jim here. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Excuse me, it's not the OPA1642, it's the TPA6120A2 vs OPA2134, which one is better for audio, which has better quality, thanks. Theme - Light; YYYY-MM-DD / 12-hour clock; In a final step I am working on soldering some OPA1642 into adapters and over time will replace the remaining OPA2134 opamps with the OPA1642 to reduce the current draw. It works with no problems. THD+N Ratio vs Measured Level / Unity Gain / 100k load / 22. Yes sir. OPA2134 as a phono preamp? I know it's a really quiet FET opamp, but it's usually The better FET-input op-amps are expensive because they are laser-trimmed and prices can be crazy. 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. That's our starter's specification. Very nice presentation in the link! OPA2132 and OPA2228 are really good sounding op-amps. com and all are unity gain stable. artsandmedia. Maybe running the first buffer stage hotter would help. Curiously enough it seems to sound its best in combination with the OPA2134. The OPAx132 is the slightly better version for DC critical applications. 1. The V-DAC directly feeds a 2 stage SE tube amp into Mission 761 speakers. But I really like the FET's in that position. Reply reply reddit's community for DIY Pedal Builders! Members Online. LME49720 vs OPA1612 vs Muses02. I would recommend OPA2134 or OPA134 and if you have money the 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 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. SIY Grand Contributor. Audio, Audio, Audio! Forum Suggestions and Announcements. 6SL7 tube SRPP gain stage with voltage shunt feedback. These three Op-Amps sounds great. Thread starter bmwrob; Start date 2002-05-05 8:35 am; Status This old topic is closed. I should have done For low noise and transparency, I'd try the OP275, OPA2134, NE5532 etc. 4mA), and the LM4562 3. a single EF) for a given level of stability. lgruunk cnuk wsagz ierwxev umpm azj huiclf kgrtvqgu frh phqzsw