the ne5532 looks a bit harder, narrower and more direct, the other two a bit more relaxed and Apr 13, 2014 · The G1. Any other The TL072 is my current workhorse and I use the OPA2134 in critical audio applications when I need to. NE5532 worked great but DC offset was 45 mV. So I don't know. I am thinking that my best bet would be the BB OPA2134/2132. Also will upgrade signal path components in future. 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. On the schematic i chose them to be typical 10k and 33k. What sets the OPA2134 apart from other audio amplifiers? The opa2134 sets itself apart with its low total harmonic distortion and high slew rate. Polyend unveil Play+ groovebox; New Loops Special Offer! 40% off 'Pigments Presets Bundle 1'! Sound Magic Cadenza Guitars, Classical, Acoustic Guitar and Ukulele Bundle, now only $69 (was $249) Dec 28, 2018 · Hello, I'm referring to the phono preamp section of this integrated amplifer. Nov 13, 2023 · 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. See the data-sheet for more info. Or a zendrive with an ad712. A Apr 14, 2021 · With that said, it sounds like there shouldn't be a problem. Oct 23, 2005 · Maybe I should have added that my list was not meant as a suggestion of the kind that all those op amps are necessarily better. Details were lost. Sep 17, 2021 · The OPA2134 is a Dual Package Operational Amplifier, meaning it has two Op-Amps inside it and each Op-Amp can be used independently. The sound came out "thick" and I could feel the artificially enlarged sound stage. I do this usually since it's the fastest way to get a simulation running. If your consider THD levels then OPA2134 is the best in this three but noise density is better on NE5532 side. This is just my opinion of course but I personally prefer the sound of the AD4562. 1 sold. As for BB OPA2134 sound, it sounds better to me than the R4580 and is less fatiguing. 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. de and as stated on their website, it arrived without a power supply. ••• Apr 6, 2020 · The OPA2134 is very ordinary, I consider it a side step to the NE5532. 3k by keeping the same ratio,how the sound would be affected? OPA2134 OPA2134PA OPA2134UA dual OPAMP DIP&SOIC all stock HIFI audio upgrade. the differences aren't huge, but big enough to make a change worthwhile. " But since it's already on order, might as well listen to it for awhile. 0 out of 5 stars 1 The Best Upgrade and Easiest Upgrade Measuring 12. 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. Parameter-, Bestell- und Qualitätsinformationen finden Aug 20, 2018 · Buy Burr Brown OPA2134PA OPA2134 - Dual HiFi Audio OpAmp (Pack of 2): LME49720HA HiFi Amplifier Board Upgrade AD827JN AQ NE5532P OPA2604AP OPA2134PA AD712AQ, Used OPA134, OPA2134, OPA4134 SBOS058A–DECEMBER 1997–REVISED OCTOBER 2015 www. but the difference between opa2604 and LME49720 is much smaller than the difference between these two compared to the original ne5532. The notch is between pins 1 and 8. The difference between them certainly isn't staggering, especially when used at unity gain into a higher impedance load (>1kohm). The OPA2134 is not harsh. The TL072 is around a half inch rectangle with 8 legs going into a socket. OPA2134 is good but it consumes more power than normal (8 to 10 mA per IC) and it is not rail to rail output. opa2134 is nice for cut frequncy in active crossover application ,but if put in xo preamp section ,you will hear drier sound. Im building a stereo preamplifier based on OPA2134 . 57 in x 1. 4" plug). 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. Mar 30, 2012 · I have a Crate VC508 guitar amplifier that many recommend modding by replacing the TL072CP opamp chip. 67 at Mouser) is a drop in replacement for the NE5532. Forums. ••• OPA2134 op amps are easy to use and free from phase inversion and overload problems often found in common FET-input op amps. 4mm X 14. But now I have to replace them. Great sounding for such an easy cheap build. A true FET input stage is incorporated to OPA134, OPA2134, OPA4134 SBOS058A–DECEMBER 1997–REVISED OCTOBER 2015 www. Im getting ready to use the same board and opamp in a Ten Tec Corsair Ham radio transceiver. I did direct comparison vinyl/cd on 2 albums. Fault traced to Jan 22, 2007 · Dada electronics is proud to anounce the 44 upgrade-kit and revision-service. Find parameters, ordering and quality information OPA1642 sucks 1. File Size: 327Kbytes. The muting is auto. The main distinguishing feature of the OPA2134 Op-Amp is that they are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. 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 these but these are SOIC and you’ll need an adapter with experience soldering skills. Oct 16, 2008 · Hi all, I just replaced the TL072CN from my preamp with the "better" opa2134. I wouldn't want a rat with an opa2134. Forward midrange (but not as bad when OPA2134 on input stage) Less soundstage (but not as narrow as when OPA2134 in input stage) The sound is completely mixed. Additionally, 5V isn't really enough for the OPA2134. Jul 30, 2016 · 1) OPA2134 where the schematic shows LF353; LF353 where it shows TL072 2) TL072s all the way. 1 without any modification to the power supply, etc. IIRC it comes directly from the TI web site. After several tests we decided to use Burr-Brown OPA134 and OPA2134 to replace the TL's. Download. The OPA2134 was more "musical", enjoyable and detailed, but it squeezed the soundstage so much. g. Page: 9 Pages. 59. You will get a better response from the 2132 at lower voltages Bottom line: supply voltage >12V, don't replace the The OPA2134 is an op-amp not comparable to the TDA2822, so you cannot use the same circuit and swap out the IC. OPA2134 is more stable, as it is not too fast for Audio. Then decide which direction. Oct 23, 2005 · One of the best op-amp's that i've tried is the EL2244 op-amp from Elantec/Intersil, used (only) by Arcam in Alpha 9 and cd92 upgrade kit. These adapters accept two SO8's and adapts them to 14-pin DIP. But the lows were Dec 12, 2021 · It depends your ear taste. Don't get me wrong. 1 and Orpheus Minotaur speakers Mar 31, 2008 · OPA2134: When I replaced the OPA627 with the OPA2134 I found the music to be a bit uncomfortable to listen to. 48 in x 0. We get lower current noise and better EMI resistence. ) Also, don't assume that the NE5532 that comes with a kit is a real NE5532. I've tried the lme49720 on a few dac and had the sameish experience as you. To my ears, it sounds much better and has good bass. They conveniently fit wherever they’re used. The OPAx132 amplifiers are different than the OPAx604 in that the x604 can use ±24V supplies, whereas the x132 and x134 can use only ±18V. com Pin Functions: OPA2134 and OPA4134 (continued) PIN OPA2134 OPA4134 I/O DESCRIPTION NAME NO. To me, the 4562 should be the touchiest, with its 50 mHz GBP. I have spent much more on more complicated builds that do not sound as good as this pre. OPA2604 is one of the few op-amps having +24 -24 max supply voltage. It might just bring out the maximum potential of the opamp. It measures better to, with LM4562, but the difference is much smaller than the sound differences. Oct 23, 2005 · Interestingly - just to expand the list of manufactures doing that - NAD also decided to upgrade its C541i last year by releasing 542 and replacing, among other things, opa2604s with opa2132s. Description: High Performance AUDIO OPERATIONAL AMPLIFIERS TM. However, for each of them, there are people who have tried it and consider that particular one to be the best of all op amps. LIB onto the schematic, then name the opamp OPA2134. I noticed someone talking about an OPA2134 as a replacment. include this text, place opamp2 in ltspice and rename it to opa134 ***** * GHF: renamed to opa134, the model consists of 1 op amp only, after all ** Released by: Analog eLab Design Center, Texas Instruments Inc. V– 4 11 — Negative power supply +In D — 12 I Noninverting input channel D –In D — 13 I Inverting input channel D Out D — 14 O Output channel D 6 OPA134, OPA2134, OPA4134 SBOS058A–DECEMBER 1997–REVISED OCTOBER 2015 www. Aug 4, 2007 · gaetan OPA2134 may not be quite as good as the LM4562 etc. I noticed that the opamp used for the audio output was an NE5532. More options We would like to show you a description here but the site won’t allow us. A question for opamp gurus. Jul 26, 2019 · 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). So in the first tests, it is the OPA2134 which is acting as the comparator, and handling the input signal, and acting as the integrator. It makes it a lot easier to replace an op-amp if something goes wrong and you cook it. The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. May 29, 2021 · But not after I heard the SRH1540 and V5i-D. 3 × 0. In terms of sound quality it mostly comes from the headphones themselves, but with some cans you'll want something with better power to really bring it to its full potential. 6SL7 tube SRPP gain stage with voltage shunt feedback. Related items. A number of years ago, I upgraded the stock LM6172 op-amps in a Marantz CD67-SE to OPA-627s, as part of a hot rod job (upgraded caps and fully reworked output stage). Some dirt pedals sound like crap with a good opamp - Dist+, Crowther Hotcake, SS2 and many more. I will be performing a full recap and will be further investigating the power supply to see if I can make it as quiet as possible. HF is really lacking and everything sounds like it has been smoothed out with a sand paper. Will put in an order for these op-amps tomorrow. If i choose them to be 1k and 3. Can anyone suggest drop-in replacements to OPA2134? I'm looking for a natural, transparent sound vs colored. LM4562 worked great and DC offset was 3 mV OPA2134 oscillated. Jun 20, 2023 · opamp rolling seems to be a must with V3, I settled with Muses02 after testing out Burson v5i, v6 classic, opa1656, opa2134. According to the C-4000 schematic, both opamps have 12+/12- running to their rails. Sniper 5 motherboard comes with an ‘OP-AMP Upgrade Kit‘ which includes : OPA2134(on board) – By Burr Brown, now owned by Texas Instruments. NO. When used as a single dual stereo op amp I find the soundstage a bit flat and a thick sound. This was only possible because of the excellent 'Brown Dog' PCB adapters made by Cimarron Technology ( Oct 21, 2001 · Re: Upgrade of OPA2134 - Ehien 11:53:17 10/23/01 (0) In Reply to: Upgrade of OPA2134 posted by Robban on October 21, 2001 at 22:53:18: Hi Robban, I'm also using OPA2134, in my phono stage. Sep 25, 2009 · I have a toshiba sy-335 preamp that I am looking to upgrade. At least you don't appear to be deaf Plenty more opamps to try and quite possibly some will fit your system and taste Prodigy 205 points. The application is to upgrade the new Toft Mixer which hasn't come oput yet but it has been stated that I need to source a replacement for 2 2134 op amps in a new preamp design. It was less "real", less "live" and less "musical" to my ears. 5V to ±18V power supplies. Is this correct behaviour. If a FET-input amplifier is required for low bias current (such as for a phono preamp), you might consider the OPA1642 or OPA1678. However, the Vertex Ultraphonix sounds good with an opa2134. with good Ei 12ax7's btw CD still sounded better however. . 4kHz bandwidth 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. Mar 11, 2016 · I would follow the Peavey upgrade bulletin and replace the ICs listed by them. I really just want the good, but workhorse, jfet op amp that's a replacement to the TL072. The treble might improve with time, but right now it sounds muffled compared to other amps that I have heard (creek, SAC). --lme49722 lme4562 lm4562 opamp is very good sound ,higher ratings than opa2134 -but not as Jul 8, 2011 · Use the Ti/BurrBrown OPA2134 Opamp. OPA2134 op amps are easy to use and free from phase inversion and overload problems often found in common FET-input op amps. We see a dual FET in differential mode, followed by half a 4558 dual opamp. Aug 19, 2023 · I have both. Aug 18, 2010 · So, you have this covered and provided supply layout and decoupling are reasonably good, the new opamps simply don't sound all that good. If the OPA2134 isn't working its junk/fake - these days you would never expect a valid semiconductor part unless purchased from a reputable electronics supplier, its hopeless out there in random-vendor land. I used almost all of the mentioned here ICs (except opa627 - but I heard it - and new fast and low noise ADs like 8066/66 and ad8620). I would like to know whats the influence of feedback resistor value R19,R18 on sound. It needs an adapter though. Right now - the TLE2142ID is looking like a good choice. Whether you are a hobbiest looking to upgrade your gear, or a manufacturer who needs the best op amps and power supply components on planet earth, we have you covered. Thread starter ratu; Start date 2004-01-30 11:22 am; Status This old topic is closed. AD826 used instead of the the OPA2134. Likewise I would have thought that an OPA2134 is an OPA2134! Dual Op Amp, LME49720HA HiFi Amplifier Board Upgrade AD827JN AQ SQ NE5532P OPA2604AP OPA2134PA AD712AQ, Used in Decoder, Music Player, Preamplifier, Headphone Power Amp, CD 5. OPA2134 is probably a good choice in general. Oct 26, 2012 · OPA2134 - best for entry level phono with entry level TT and cartridges, with low budget gives very good, bright and live sound. 8ma quiescent current per channel - half as much as OPA2134,OPA1656 is the best boise performer now, but there many different purposes with different requirements. The OPA2134 is a very clean opamp and I would test the AC signal output instead of just the DC aspect. JFET sound is more like the tube sound, BJT is pure solid state. Are there any opamps with more analytical treble that Feb 26, 2020 · If using the OPA2134 improves my enjoyment of these pedals I guess I'm ok with that. The gain is 6db lower than the A07, which is noticeable, but not a big deal for me as both offer more power than I need. 14 in) the V6 are the smallest discrete op-amps in the world. MP3 or WAV? Sound Magic Cadenza Violin, Solo Italian Violin Sample Library; SuperACID Bundle -€60 Off Until September 22th [request] JL Cooper Synapse Software for Atari ST Oct 8, 2001 · I opened up my very inexpensive dvd player yesterday to try to look for upgrade options. * Part: OPA134 * Date Oct 7, 2021 · It costs a little bit but you could get a couple NJM2068, LM4562 and OPA2134 from Mouser and then have fun seeing if you can consistently tell the difference. 5. Input cascode circuitry provides excellent common-mode rejection and maintains low input bias current over its wide input voltage range, minimizing distortion. Does anyone have any personal experience with fake or suspect OPA2134's? Mar 11, 2003 · 1. The Resolution was crazy good. I'm powering my amp with 8 AA's, but that might change in the future. The OPA2134 is one fine chip Sep 6, 2023 · If you hadn't already ordered the Fosi, I'd suggest you take the total amount you want to spend - say, the Fosi + op-amp upgrade - and then spend that amount on a different amp you don't have to "upgrade. Both are good opamps for the price, and I prefer either of them over the NE5532. Or at the very least a solid enough upgrade to future proof yourself. So I can use any one of these ( one at a time !). OPA2604 is a little bit faster. These would all be great devices to upgrade to. Oct 31, 2012 · MUSES 8920 vs Burr-Brown OPA2134 Home. Maybe it's better than Mar 15, 2014 · OPA2134 is a good replacement / upgrade but LME49720 is the part we fit as the best upgrade. Two different op amp affect the output stage 50/50 each. (Perhaps difficult but potentially fun. The PS section works like a charm. The Nov 18, 2017 · You must search for OPA2134, not OP2134 This is an excerpt of my default lib. From my reading on this subject, it seems that many fake OPA2134's are simply 'restamped' TLO72's for example. Nov 19, 2008 · I recently bought an ART MPA Gold and am planning to upgrade the tubes and opamps. The OPA2134 (and OPA4134) coming from Burr-Brown have some really nice slew rates (20 vs. Jul 20, 2009 · First off, I really like the sound and presentation of the OPA2134 that came with the Rudi. Sparkos Labs has everything from audio gear to the finest audio upgrade components. Connect the power per the spec sheet and connect the output to the negative input terminal, then put an AC signal on the plus input terminal. The Burson is just a little better in my opinion. Worth every penny. Opa2134 isn't a bad opamp, but I don't like if in lpf sections. OPA2604 - I really love it! Very good and serious sound, best for middle level equipment. A lot of op amp talk is full of audiophile nonsense that I am sceptical about. According to the datasheets for both Jul 13, 2019 · The LM4562 (same die as the LME49720) was designed to produce a low open loop distortion - likely better than a 5532. If you want to reopen this topic Apr 1, 2012 · Howdy. The 5532 has a slew rate of 10v/us, or about half that of the 4562- and it's very hard to see why this is important for any audio applications as the full power bandwidth for the 5532 with 15v supplies is about 110kHz, and that's with >9vrms at the output. 0 1 Review ౹ 7 sold. Feb 23, 2021 · I tested three op amps in the circuit: NE5532, LM4562, and OPA2134. Listen to the V3 with different dual op-amps socketed and experience the changes in sound! The demonstrated op-amps include NE5532, JRC4580D, Sparkos SS3602, Dec 6, 2018 · I would recommend OPA2134 or OPA134 and if you have money the OPA627 or OPA637. Aug 24, 2012 · i tryed lme49722 opa2134 and opa1612 ,--. g, a NE5332 or LM833 - or an even better, faster, low-noisier one? Aug 8, 2014 · Pretty much any form of construction is going to be OK. The AD826 seems to be smoother than the OPA in the voice range. R2R DAC MK2 Decoding Beyond PCM1704 ,PCM1702 Beyond PCM63, TDA1541, CS 8414+DF1706 (DF1700 1704 Upgrade Version)+OPA604+OPA2134. We all know that nowadays there are so many better opamps than that one, but would the amplifier benefit sound- or noisewise from substituting it by, e. No need to get ahead of yourself here. Attached the schematic. I came across a simple circuit (please see attachment) that utilizes an OPA2134PA. I never really liked the TL072 but the LF353 was great it's possible that the opa2134 is oscillating given the NF is not direct. But deep bass and transients seem more punchy in the OPA2134. Only in Electronica was the soundstage not much wider and imaging not much improved. I have a phono preamp board with three socketed DIP-8 OPA2134 in it. It is difficult to say which one is better. Esp. And without mentioning every op amp in existence, I'll close with I yet have to find a circuit where an NE5532 is the best possible option. It needs to be mounted on an adapter to be used here. Upgrade to OPA2134. Other Parts Discussed in Thread: OPA2134, , OPA1678. V– 4 11 — Negative power supply +In D — 12 I Noninverting input channel D –In D — 13 I Inverting input channel D Out D — 14 O Output channel D 6 Jun 20, 2001 · okay, so I have a 47 amp with a coupla 2134's. NJM4558 and NE5532 are both BJT input amplifiers while OPA2134 is a JFET one. That is the part we will be replacing. Jun 9, 2015 · opa 2134 should be way lower noise. Depending on the actual application circuit, there are alternatives with better noise performance. Marchand Active Crossover reviewed with SS3602 Discrete Op Amp Upgrade. Sep 30, 2010 · In fact when the originals were first installed I remember thinking that they didn't sound as good at the LM833's in there previously! But these OPA2134's sound nothing like the original ones. Thanks. Jul 22, 2022 · OPA2134 is great for buffer and clean applications but I never liked it for overdrive/distortion. With this combination I was still getting some stage, and it wasn't too sterile either. My Sennheiser HD580 sounds dead with this card. OPA134, OPA2134, OPA4134 SBOS058A–DECEMBER 1997–REVISED OCTOBER 2015 www. LM4562 is another level altogether. A true FET input stage is incorporated to provide excellent sound quality and speed for exceptional audio performance. For high freq the OPA2134 is suppose to beat the TL072 in performance, I have read ( : Go for TL072 or OPA2134? Feb 28, 2021 · OPA2134 has good tone and detail when in single mono mode ie with two op amps one per channel. My first thought was to build it on breadboard, but then my friend said that Mar 4, 2012 · I just A/Bed OPA2134 and LME49720 in the input buffer & output stages of a Bozak ISO-X. MUSES8820 is the best, IMHO. Feb 1, 2006 · OPA2134 is a far easier drop-in replacement for the TL072. Yes it is a lot more expensive than a TL072 but really - Tayda sells a OPA2134 for US$3. The 353 is not in play. 5mm X 29mm (0. Is it me or this is the case? Any other experiances, or thoghts are welcome. It excels in applications requiring high audio performance. The R4580 is probably better spec wise but sometimes distortion of a signal to make it warmer (quieter treble) is a good thing. Other Parts Discussed in Thread: OPA2134, OPA2604. Mar 4, 2005 · Before I swap them in I just want to make sure that I can just plug and play the OPA2132 and OPA2134 in place of OP275 in my Audio Alchemy DAC V1. V– 4 11 — Negative power supply +In D — 12 I Noninverting input channel D –In D — 13 I Inverting input channel D Out D — 14 O Output channel D 6 May 17, 2023 · While the opa2134 is a versatile audio amplifier, its application will depend on the specific requirements of the project. Some versions used dual (TL072) opamps, other version used single-opamps. Now lets see what ‘OP-AMP Premium Upgrade Kit’ is all about and check how these Op-Amps rank from spec perspective. Feb 23, 2019 · AIYIMA A07 TPA3255 Amplifier Measurements LM4562 option I received my A07 yesterday, on January 6, 2021, shipped from Italy. The AD8599 is on it way and some highly respect it. High resolution was lost. These replacements sound clean, crisp and dare I say it. The most obvious difference it the wider soundstage. The depth and weight of each note can be felt with immense clarity. The original name was probably 2134. I tried using one 2134 and one 4562 and it oscillated. The advice was: . OPA2134 Datasheet (PDF) Weight: 0. I use sockets to hold the op-amp. The V3 sounds more refined. I am testing the A07 with 2 different power supplies. TL072 works most of the time but I almost always find a better substitute in dirt pedals. So I was right the first time In the second tests, everything is TL072 anyway. 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. V– 4 11 — Negative power supply +In D — 12 I Noninverting input channel D –In D — 13 I Inverting input channel D Out D — 14 O Output channel D 6 Nov 9, 2012 · Muses02 vs BB OPA2134 in Topping A30 (single-ended to differential buffer) Rig includes: Topping A30 and D30, HD600s (vintage 2017) with HD650 (genuine Sennheiser replacement part) 3m cable (1. But it seems that's not the case. Jan 12, 2004 · 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. Reply reply More replies More replies More replies Nov 7, 2023 · He used the TL072CP for the filter, I have spoken to him and he say I may try the OPA2134 as they are also FET. The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. ti. OPA2134 costs an arm and a leg. ) I wasn't expecting to hear any difference but couldn't believe the improvement in clarity with the LME49720 chip. Easiest is to replace LF351N and LF353N for the OPA134 and OPA2134 just like the shop in Idaho did. I don't think I wouldn't call either one a sound upgrade, but instead there is a difference in performace at a given voltage. musical. 6 days ago · G'day all, an interesting thread. 3. However me being me, I want to optimize the most out of the 222ESA and the OPA2134. 2 in: RC4136 Upgrade Adapter – 060601 Select options This product has multiple variants Oct 7, 2021 · It has to work :) If you begin with your meter negative lead on the negative terminal of the battery (and keep it there) you have to be able to follow the +9v from battery to board and then onward to pin 8 of the chip. right. Could anyone recommend a specific opamp to upgrade to, or is the NE5532 a decent opamp that I shouldn't worry about replacing for now. The Linear Tech one sounds interesting. The OPA2134, in this application, was not nearly as striking an improvement. Any idea if this would make an audible difference ? The headphone output of the 192L card REALLY sucks . BTW there are many op-amps that share the same pin connections and can be substituted for the Burr Brown OPA2134 used in this The SS3601 / SS3602 discrete op amps will outperform virtually all audio grade monolithic IC op amps in open loop gain, noise performance, output current, and magnitude of class A bias current. LM4562 – By National Semiconductor, now owned by Texas Instruments. 5RQ Balanced Power - Tascam CD200 - Oppo 93 - Auvio HD Radio Tuner- MiniDSP OpenDRC-DI DSP, 2x4HD - AcourateDRC - UMIK-1 - ECM8000 - REW - Behringer DEQ2496 - Behringer UMC202HD and Focusrite 4Pre USB - Benchmark DAC2 HGC - Krell KCT pre and FPB 350mcx monoblocks - Sennheiser HD650 - MartinLogan reQuest 15" x 48" electrostatic hybrid with 12" sealed woofer 180Hz cross May 30, 2007 · If the orginal OP is a FET (like TL072, OPA2134 etc) we may be careful sometimes NOT possible to replace with Bipolar (like NE5532 etc). +Gain Bandwidth. Nov 25, 2015 · So far I read the OPA2134 as an upgrade to the LM but its quite expensive, has anyone experience with this op amp or do you know any op amps that you consider an upgrade from the LM4562? Last edited: Dec 15, 2017 May 15, 2022 · Buggle2 Riaa board. When the original OP is Bipolar(like NE5532 etc) we can most always replace with FET or another similar Bipolar OP. Oct 10, 2020 · In the case of Aiyima a04 ( I have two of them ) it is very clear that the sound quality gets better with LM 4562 instead of NE5532. The result is better highs more clear but the lows are not so punchy as with tl072cn. Nov 4, 2020 · Quite a while ago, and on EW's recommendation I upgraded the OP amps in my AU-D11 II from the original M5219L SIL-8 package OP amps to OPA2604 PDIP-8 OP amps. It is a fine sounding amp. Part #: OPA2134. I got a TI NE5532 off ebay. May 8, 2022 · The OPA2134 with JFET’s is a high-end DIY stereo amplifier for dynamic headphones. One has the newer TI RC4136, one has BB OPA2134 and one has an AD4562. Reactions: 1 user More options Jan 30, 2004 · Upgrade to OPA2134 . The OPA134, OPA2134, and OPA4134 (OPAx134) series are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. Jul 14, 2023 · Having done this experiment several times on Carvers using brown dog adapters and opa2134 chips I have gone back to installing new RC4136’s In the phono and main drive circuits only No measurable sound difference or in noise floor measuring on the AP. It is also easy to try different op-amps. I think I can afford that for my own pedals. 5, Orpheus Aurora 2. If you have a dac or amp with sockets for the op-amps you may want to audition the SS360x before you upgrade to another product, you may find the swap improves your existing amp or dac enough that you decide to keep it. Feb 21, 2004 · I was considering changing these smd chips with something better like the OPA2134 or AD826. Replace all JH caps (a lot) by Elna Silmic II's Replace the powersuply by a better one. I read that the OPA2134s are socketed on the MPA Gold. The x134 and x132 are available in quads, where the x604 is available only in dual and singles, probably because of the power limitations of a quad package. It is far better than opa2134/2132/2604/2228 (BB-veild sounding op-amps), ad826, op275. Oct 28, 2012 · Well, the output offset in a OPA2134+BUF634 headphone amplifier is the offset of the OPA2134, which is only a few mV worst case. They can be operated from ±2. Although I am a fan of the OPA2134, I still have very considerable respect for the NE5532. V– 4 11 — Negative power supply +In D — 12 I Noninverting input channel D –In D — 13 I Inverting input channel D Out D — 14 O Output channel D 6 Jan 10, 2006 · We've got one and I hadn't really considered tweaking it. The polarity is correct given the orientation of the LED. Their outputs in turn drive a pair of op-amps in the socketed Op-amp (circled) which are our output buffer/op-amps. Just finished soldering the jacks and 9V plug, ready to box up and drop in my ICs and realized I didn't have the OPA2134! There are some threads talking about swapping out OPA2134s for other 8-pin ICs. In both, I swapped out the 5532 op amp for an OPA2134. Agree with previous post, fast, detailed, revealing and neutral. Equipment Forums. The damn thing played holographicall Aug 24, 2018 · THD+N Ratio vs Measured Level / Inverting 6dB Gain / 100k load / 22. I need help understanding what parts I need to replace in the EQ board to match it with the OPA2134's datasheet. 47uf PP film directly from each chip's supply pins to ground. Jun 20, 2007 · I decided to try some upgrades to it: TLE2074 - listed by TI as a significant upgrade to the TL074 - staging was a bit more accurate and bass sharper, but sonically sounded really quite similar to the TL074 When I first installed the OPA4134, it distorted at high preamp volume levels, and the LME49740 distorted at low levels. But $40-57 each Careful swapping in a higher bandwidth part, they can oscillate in "old" circuit designs and not all parts are unity-gain stable. ••• Nov 26, 2012 · for good info on guitar pickups' electrical parameters: UIUC Physics 498POM Guitar Pickup Measurements I doubt there is a lot better noise performance possible with the hi R pot as source the TL072 input noise V ~ 16 kOhm equivalent ~ 3 dB noise figure at higher source Z the V noise of the op amp is even less important and the noise figure can at best only asymptotically approach 0 dB Feb 12, 2007 · The OPA2134 sounds more precise and neutral. I plan to get the brown dog adapters and try the opa 627's soon. Personally, I like the ne5532 with the cs4398(about the same detail level as the opa2134 subjectively but smoother sounding in my opinion). 000015% at 1 kHz. dynamics and soundstage The OPA134, OPA2134, and OPA4134 (OPAx134) series are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. Oct 8, 2017 · So I just blew up 5 Burr Brown OPA2134 due to bad labelling on the PCB (Ok I was also supposed to be more careful). Warm Treble. Part Number: OPA1656. Aug 20, 2003 · If you typically power the amp with lower voltages, like 1x9V, then I think you should go with the 2132. Maybe this OPA2134 will replace one of NJM4556 forever. The CD player is a NAD 515BEE The stock PP2i was way better compared to the SCA's preamp. The problem with the 44 is the fact there are different versions. 2. Oct 13, 2009 · Apparently the 4560D can be replaced by something like the OPA2134 or OPA2604, judging from a discussion on another site. If the inputs to the IC are well balanced you may be able to get rid of the O/P capacitors, as the OPA2134 has a very low DC out. OPA2134 gain stage with voltage series feedback. Purchased at Amazon. And it is a JFET opamp, which is always preferred by myself in the positions where slightly higher voltage noise of the opamp is negligible, like here. Has anyone had any problems using these as generic drop-in replacements for TL074, LF444, etc? Nov 26, 2017 · thanks for your tips! i have tested the opa2604 and the LME49720 compared to the ne5532. A lot of noise comes down to gain settings and even with the replacement ICs there can still be a fair bit of unwanted noise from the rest of the circuit. Oct 23, 2014 · Okay so I want to build a simple opamp based headphone amplifier. Stock V3 is just flat compare to stock A07, this is tested with Topping D30 and Whatmough Emotion 6. TI-Produkt OPA2134 ist ein(e) SoundPlus™-Audio-Operationsverstärker mit geringer Verzerrung, geringem Rauschen und Präzision. Strong bass. I would say it depends on what circuit. rs ••• Mar 23, 2005 · For the RC-4136, I will be using the Brown Dog RC4136 Upgrade Adapter and for the TL074 a 2X Dual-to-Quad Op-Amp Adapter. It was designed with an emphasis on maintaining simplicity in the signal path, and utilizes an all-discrete, fully-complementary topology featuring a JFET input stage, current-mirror VAS (voltage gain stage), Sziklai complementary feedback pair (CFP) output stage, and no global negative feedback. great results running OPA2134's with at least 470uf Nichicon & 0. Dec 17, 2018 · The OPA-627 is a terrific op-amp. Thread starter theque; Start date Nov 21, 2012; Tags headphone-amplifiers Apr 12, 2019 · 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. Hi Community, TI!!! I would like to upgrade an audio amplifier OPA2134 and the TI site web recommands me to change for a new OPA. 1-nV/√ Hz noise density with an ultralow distortion of 0. Is there an opamp that would be a good drop in replacement? Dec 29, 2020 · The OPA2134 has completely left its mark. I found that OPA1612 was in the ultimate soundplus collection that's why i have change for it. but should plug straight in withpot any stability problems. Another way to say it: JFET OPamps like OPA2134 can replace most any other audio opamp Apr 21, 2019 · I repeatedly used words like sharp edged, clean, and clear in my notes while writing this. ••• Jan 7, 2021 · So considering NE5532, LM4562 and OPA2134, OPA2134 gives best measured results in AIYIMA A07. TI’s OPA134 is a Single SoundPlus™ 8-MHz, 50-pA, high-performance audio op amp with FET inputs. From what I heard, it is already better than 2604, 275, and other other OPAmp with # I forgot. (TL072 was the original. exponential converters - but that will also be happy handling audio if needed. Not very surprising as the OPA2134 is usually an opamp i upgrade, not one i upgrade to. Any of the devices I mentioned would be a decent upgrade. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. Oct 16, 2014 · OPA2134 replacing RC4136 How did the replacement work out ? Im getting ready to use the same board and opamp in a Ten Tec Corsair Ham radio transceiver. Oct 19, 2016 · I used a perfboard and it only took a few hours to populate the board being it is so simple. Portable Headphone Amps. Looks like pretty much the same story for the 2043D. So I decided to mix the LM4562NA (input) and the OPA2134 (output). One of them is a linear Sep 11, 2013 · Bipolar op amps were dominated by the NE5532 and it's a great chip, and the LM4562/LME49720/LME49860 an obvious upgrade for that niche. I'd like to find a 3rd choice for critical/precision DC circuits e. To my ears it sounds just a little more crisp compared to the OPA2134 or the RC413. I've looked around before and I know that while the best sounding op amp in any given situation can be somewhat subjective, there are certain types that aren't good for Can't believe I did this to myself - I glossed over my pick list, and didn't order an OPA2134 for my Magnetron Delay. Paste the contents of OPA2134. Nov 8, 2006 · OPA2134 and OPA2604 are very close in data. It offers exceptional performance in almost any audio application. Feb 16, 2017 · OPA2134 is a FET opamp and has its own unique benefits but isn't as low noise as R4580. Sep 23, 2012 · Hi. Apr 4, 2017 · They all have OPA2134's in the phono stage but the line stage op amps (IC7) are different in each. It's supposed to be a stright up replacement but it's about a third of the size. regards, Ethhan Dec 30, 2020 · System: Equitech 1. The schematic is much the same from the datasheet. A true FET input stage is incorporated to provide superior sound quality and speed for exceptional audio performance. OPA1642 is its replacement despite the lower type number. Sony IER-M9: The synergy with IER-M9 with xDuoo XD05 Bal and Burson V5i-D upgrade was mind Sep 16, 2020 · And the Texas Instruments OPA2134 has a quiescent current draw of 4 to 5 mA - according to the datasheet. Apr 8, 2019 · So I decided to give a try to the OPA2134 which is almost 5x the price. Jan 7, 2020 · Dirt pedals, depends on the design. How are LME49860, LME49720 etc? Are they drop-in . The OPA2134 should be a better choice, but how much difference you'd hear compared with the OPA2604 is debatable. Manufacturer: Burr-Brown (TI). The Aiyima A07 sounds more forward in the mids and a little less refined in the treble. This was the biggest perceivable difference between the OPA2134 and Burson V5i-D when it came to the SRH1540. DIYSB seems less full of that guff. Apr 16, 2011 · Just to add to your list, the OPA2134 ($2. 15V/us), noise rejection (120db vs 70-80db), lower offset, much closer to rail outputs, etc. Don't forget to change any YXB electro's as they are one of the leaky caps of that era. 01 oz: Dimensions: 0. Color: OPA2134UA. Mar 19, 2005 · I tested the opa2134 vs the ad712 that were stock. You may have to add a 47pf cap between the output of each op amp and the (-) minus pin. (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. I finally received the discrete op amps yesterday and installed them in my Marchand Crossover (XM44 3-way)…WOW! I must say that the improvement offered over the standard OPA2134 is not trivial. I checked my local electronics supplier and they have it in stock. the best sounding is OPA1612 ,not for driving headphones -low output current drive ,3ma current consumption ---then opa2134 the best all around as preamplifier it can be used at high gain 6-10 times,very good sounding and Musical,good for biassing in class A. Jun 8, 2010 · The OPA2134 is a lower spec version of the OPA2132. The opamps that are currently inside are 4558DA and I was told that a good replacement would be the Description for the OPA2134 The OPA134 series are ultra-low distortion, low-noise operational amplifiers fully specified for audio applications. Feb 13, 2016 · You can see how the ESS DAC drives the OPA2134 op-amps that are soldered, providing current (I) to voltage (V) conversion. Oct 7, 2021 · The circle is pin 1. Im gone use only the lowpass unit on the filter but build it as a complete filter. Feb 2, 2004 · Go the LTSpice's symbol library and put opamp2 on the schematic. [/quote] Upgrades are changing the bias feed cap to allow biasing for +9 tapes (499,gp9 etc), Some cap and feedback resistors to wima and dale-vishey and opamp upgrade. dfgt bqqq pdco tpqg zrzb iiyhpeq sbqxfq nqzgkp nhve czztu