Opa2604 op amp review. The device is well documented on Analog Device's website. The V3 supports a variety of dual 8-pin op-amps such as Sparkos SS3602, MUSES02, OPA2604, OPA2134PA, OP249, AD827, RM4559, LM4562, LME49720HA. I intend to acquire an Aiyima A08 as I believe that when opa2604 chips are installed into that amp and then teamed with Aiyima T8 is going to give the sound I am looking for which will be similar to the T8/A04 combo but better and more power. Apr 17, 2021 · It is titled 20W Class-A Amplifier meets Big Capacitor. The overall soundstage and transient detail will be greatly improved when used Feb 10, 2024 · If anyone cares I finally got the Burr Brown OPA2604 op amps. The opa2604 is a fet opamp and 4562 is a bipolar based IC. I Small but beautifully formed! [Italian version] Product name: SS3602 Dual Op Amp. T9 pro to my ears was a bit muddier in the low end than my Aiyima a07 and even more so the V3. Sep 26, 2019 · It is recommended to use LM4562, which has a wide operating voltage range and ultra-low distortion. The Acoustical Manufacturing Co. One side of the Dec 6, 2018 · The OPA627 is mainly good for very low input bias - usually no need for this with audio. If there are more complicated parts (especially active parts) in the FB path, a faster OP can be a problem. Nov 9, 2012 · From looking at the PCB board, I am guessing the first 2 op-amp (out of 7 op-amp/way) is related to the Input Stages since it is closest to the Input RCA jack. The OPA2604 is available is plastic 8-pin DIP and plastic 8-pin SOIC. Today, I installed the OPA2134PA Op Amps in my Nashville 1000, that Ken Fox is selling and now using as the replacements in the Peavey amps Mar 16, 2004 · 31 posts. Noise and distortion wise OPA1641 or OPA827 perform better. It is a fine sounding amp. Nov 10, 2013 · 1,010. DAC2 — and he settled with: 3x OPA2107 for the FDO (Full Differential Output) Op-Amp from the stock NE5532 2x OPA1642 for the Line Output and the Headphone amplifier, originally from the OPA2134 and the OPA2604. Apr 16, 2023 · Apr 16, 2023. Mar 28, 2011 · 2. Offset voltage is laser-trimmed to minimize the need for interstage coupling capacitors. The stock sound is fairly cold and treble aggressive. Weight (kg): . #12. In exchange for two Burson Classic dual op-amps I writing my honest review of their performance in comparison to OPA627 and the Burson V5s I already own. May 7, 2024 · I'm playing around with some simple headphone amps ( again ) with NE5532 vs. One side of the Products Precision op amps (Vos<1mV) INA1620 — High-fidelity audio operational amplifier with integrated thin-film resistors and EMI filtering OPA130 — Single, 1-MHz, 20-pA bias current, 530-µA power, FET operational amplifier OPA131 — Single, 4-MHz, 50-pA bias current, 750-µA power, FET operational amplifier OPA140 — Single-channel, 11-MHz, low-noise 36-V JFET precision operational Apr 18, 2010 · The Steel Guitar Forum. Aiyima was gracious enough to send me a unit for review and evaluation. 99. A) - ZIP (09/28/2011) The is a dual, FET-input operational amplifier designed for enhanced AC performance. 99 with stock 32 volt supply. The harmonic texture seems more complete and realistic compared the the Sparkos devices. LME49720 vs OPA1612 vs Muses02. Then I marc opamp SUPER and put in my treasure box. # more. Apr 21, 2019 · Cons: too large to fit into some portable models and get case re-installed, Slightly bright (may bother the treble sensitive), More costly than some alternatives. Oct 2, 2021 · 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. 5 OP2604 Datasheet. The performance of op-amps from different manufacturers varies considerably. I also have some LM4562 Op amps which i am going to experiment with in the A08. Thanks again, Ron-C Oct 5, 2022 · Images show OPA627, Burson V5 and Buson V6 Classic op-amps and their relative size and Cyenne Dac 3100 with OPA627 and two V6 Classic op-amps in sockets. Here is the internal shot: Dec 6, 2018 · The OPA627 is mainly good for very low input bias - usually no need for this with audio. 75. They went from New york to San jose and then to me, thanks post office. With the 2015 HDtracks Sampler, first track cue is Sonata for 2 Violins Jun 20, 2023 · 242,226. Pricing and Availability on millions of electronic components from Digi-Key Electronics. Anyways, the point in me telling you this is that, for the purpose of reviewing the V5i in the Z2 I will be comparing it to the OPA2604, not the (possibly fake) LM4562. The sound is much better but there's still something a bit "hi-fi" and "grey" in the presentation. #1. Buy OPA2604AP. 99 with the 48 volt supply. Then i have tried opa2132pa and the sound is much better, warmer and with smoother in the treble, if a tad veild ( BB op-amps sound character). Manufacturer: Sparkos Labs. Not sonically different of course but good performers and can actually run on +/-24V (in case one needs opamps to go slightly above the usual +/- 18V rails) When rolling opamps having a 1GHz scope could come in handy. Posted August 18, 2016. Various functions. R f = Internal feedback resistance = 1 Dec 27, 2019 · Dec 27, 2019. Jun 17, 2007 · In different amps different channels 3-8 mV as allweys. 09 usd in the online store Server Store. OPA2604 PSpice Model (Rev. NE5532: The resolution is average, the high frequency is relatively dry, and the low frequency is Jan 7, 2021 · You see the opa2604 has quite a thick sound, easy to listen to, not bright or analytical in any way and the LM4562 leans in the opposite direction, not too much mind but enough to liven up the opa2604 and put some sparkle in there while the opa2064 beefs up the low end of the LM4562 quite nicely and the end result is a fuller rich and detailed Oct 28, 2019 · Removing the stock Op-amp from the Z2 did result in permanent damage to the legs, which did feed my suspicion that it may in fact be a fake Op-amp. I purchased an Aiyima A07 class D amplifier and wanted to post my impressions. OPA2604 MUSE01 LME49720. Burson Audio V5i Hybrid Dual Opamp (Pair) 10 Reviews. Simgot EM2. Oct 13, 2020 · Currently, the op chip used on AIYIMA A04 &amp; A07 is NE5532. It was just the input I had on first. The IC has range of working conditions a wide range of working voltages It's congested, muddy, mono-sounding and undynamic. T9 pro is a good unit but has (in my opinion, way) less control over the bass and a slimmer soundstage. If I was chasing that OPA1642, OPA1652 or OPA1656 would be the best choice right now. solderdude said: Actually the SIL opamps are pretty good. 00 shipping Aug 19, 2023 · The Aiyima A07 sounds more forward in the mids and a little less refined in the treble. However, I can't seem to find it anywhere, and even the BB/Ti website doesn't appear to have it, although the single 627 appears to be widely available. Please note that due to compression during upload to YouTube, there may be some loss in audio Feb 23, 2011 · you really need to know some things about the circuit - the 2604 is unusual in running from higher supply V than most standard op amps, and for rolling with modern chips many new processes have even lower than the older "standard" +/-18 V supply limits there are newer fet input op amps seemingly aimed at the opa626/7 niche: ad8610/20, ada4627, opa826 some faster op amps will not be happy in Jun 7, 2016 · The stock OPA2604 op-amp is described on a certain retailer's site as having a “warm and delicate” sound with a low frequency that has “quality and quantity”. The OPA2604 is available in 8-pin plastic mini-DIP and SO-8 surface-mount packages Jan 7, 2021 · No offence but the difference between these two op amps is very much distinguishable. Swapping out from the V5, the V6 Vivid immediately makes the music less cluttered. DAC/Amp: FX Audio DAC-X6. (1 + R 2/R. I have been playing it with a Topping D30 DAC and a pair of Elac Debut B6s in my office setup. The High Quality Operational Amplifier Chip SparkoS Labs SS3602 , MUSES02 and OPA2134PA can replace the ZA3 , BT20A PRO, and V3's operational amplifiers and can create different sound quality, providing you with a versatile Hi-Fi Feb 23, 2021 · 4 Application. B) Single- & dual-channel precision, low-voltage CMOS op amps optimized for low noise & wide bandwidth. I find the AD823 very grainy and harsh, even when used in front of a buffer. Today I roll the LME49720ha metal cans with Sparko’s Labs SS3602 on my headphone amp. Location: Singapore. You are half correct: it may introduce defects, but you can't be certain that it will. Compare the specs and see what you are looking for. We didn't have a dedicated thread to gather all the impressions, reviews and tutorials for this relatively obscure class of audio devices so here it is! I'll keep adding content to this post so Reviews (0) Description Class A Discrete Dual DIP8 Op-Amp – this high-performance op-amp can replace the NE5532, LME49720HA, AD827, OPA2604, OPA2111, JRC02, AD797AN, NE5534AM, and other single and dual op-amps. The low-noise FET input of the OPA2604 provides wide dynamic range, even with high source impedance. I can't guarantee that it's not, but someone went to a lot of trouble to reproduce all the TI/Burr-Brown markings. All the best! ••• Jun 20, 2023 · We made and uploaded a video demonstrating the V3 working with different op-amps socketed. The first one is sounding warm and innofensive, and the LM 4562 is cleaner and leaner. 1 channel) primarily for TV and there's improvement in dialogue clarity. Apr 8, 2011 · Review: Zero 09 Version. Sadly i've found controversial and opposite Feb 10, 2024 · *Edit* I have been informed that Fosi has posted purchase orders for genuine op amps somewhere in this forum. LM4562 is a high-fidelity dual op amp introduced by National Semiconductor Corporation in recent years. My personal OP amp preference for the Fosi V3 are Ti OPA1656 but others have different preferences. Jan 21, 2022 · Very listenable indeed. Both are musically better than ne5532, in my subjective opinion. Mar 4, 2005 · I have tried op275gp and opa2134pa in a sony cdp-xb740qs over njm2114d standard, but with poor results. It is how they are used (gain, DC servo, other functions, components around it) that determines noise and distortion. -OPA2604AUE4. -131 dB THD+N at 1kHz, 600 ohm load, 3. 03-17-2004 at 07:31am. Sep 6, 2023 · All OP amps seem to have at least some sort of "audio" character of their own, allthough measurements don't seem to show this, but at least they give a hint. While able to reproduce extreme detail and clarity with the stock AD797 op amp, presentation can sound a bit lacking compared to many modern headphone amplifiers that contain newer op amps. Only in one amp right channel are 0. And this is the issue with op-amp rolling. Posted by KanedaK (A) on December 22, 2016 at 16:38:35. High class-A current requirements will almost certainly drive you toward a buffered discrete op-amp solution over a non-buffered, or especially over a monolithic (silicon chip) op-amp. made many small improvements in the QUAD 405-2, the most important ones are halving the dead zone of the class-C stage and upgrading the op-amp from uA301 to TL071. #62. $ 130. Quantity. opa2143 is much drier than op2132, but better than opa2604. Oct 29, 2022 · The op-amp rolling kit comes with five of the most famous op-amps, the "crème de la crème" of the market. Using the Dual OPA2604 Op Amp to Double the Output Current to a Load. The V6 Vivid opamp is characterised to have great details and transparency. High radiation and vibration from transformers was significantly reduced by special design of triple electromagnetic shielding. All amps sound normal, but this with low ofsets - 2x more bass and clarity. I'm looking to purchase the opa2604 soon, for my Aiyima A7s. 60 USD MUSES02 - $52. Oct 2, 2021 · There is also a Preamp with a volume control, this needs some resistor values changes and then in view works best with a J-Fet (or Fet) Input Op-Amp, I like the OPA2604 with a pull-down CCS, even though it is not the lowest noise or distortion choice. 9nV/rtHz broadband voltage noise. He is very reasonably priced for the service and value minded. Last edited: Feb 12, 2021 Share Jun 3, 2021 · The AD797 op amp was one of the finest available op amps at the time that this amplifier was introduced back in 2003. Driving headphones is a far different current demand than is driving the input of a power amp. You get the Muses 01, OPA2134, JRC5532, OPA2604 and LME49720, together with all the necessary tools to start rolling for your favorite sound. 001. Sound character can even be slightly different on the same op amp but different manufacture. I'd like more liquidity and "bloom" without being too dark or veiled (I understand I might be Aug 18, 2016 · 26. After reducing the relative bandwidth and speed, its maximum voltage range has been increased to +/ -20 V and constant current flow is also greatly reduced, thus improving its applicability and Dec 11, 2019 · The SIL uses small inductors on IP transistors. Price goes up to $109. Nov 8, 2023 · Photos: 3 amps side by side (MAX, Fosi V3, original A07), close up of front of the A07 MAX, rear panel of the MAX) This is a mini-review of the new Aiyima A07 MAX class D amplifier from my "average Joe" perspective. The Aune XVIII comes in its original packaging with a pre-assembled OPA2134 and another one (NE5532). Sep 4, 2018 · This item Quickbuying 5pcs OPA2604AP OPA2604 Dual FET Input OP Amplifier Todiys New 4Pcs for LM4562NA LM-4562NA LM4562NA/NOPB DIP-8 Dual HiFi Audio Operational Amplifiers IC LM4562 AIYIMA A07 TPA3255 Power Amplifier 300Wx2 HiFi Class D Stereo Digital Audio Amp Mini 2 Channel Amplifier for Passive Speaker Desktop Bookshelf Home Theater System May 15, 2022 · Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. I wasn't expecting that. One side of the Jan 22, 2018 · Amgis 6663, 6664 / Amveco 70053. Aug 3, 2013 · Search, "Op amps in small signal audio design - Part-3" to see an analysis of the actual audio performance differences of the various op amps. Among the different musical styles, from classical, pop, rock to techno, the V3 shows no Jan 10, 2008 · If the op-amp is connected straight to the DAC output, you better use a FET input op-amp. Availability: in stock, ready to be shipped. Hi. The OPA627 and OPA637 are almost neutral but they miss one point and that's why I don't like them - they lack PRAT, sound kind of slow, uninvolving, they The transfer function is: = V. The Zero is a headphone amp made in Hong Kong, there really isn’t much info on manufacturer or anything else for that matter. 電子部品,通販,販売,半導体,IC,LED,マイコン,電子工作半導体(モジュール)/オペアンプ(OPamp/OPアンプ)秋月電子通商 電子部品 OPA2604AU-NDR. Sep 4, 2021 · Sep 4, 2021. FIGURE 8. Location. I've studied around in different forums and found information about differences between the resistor value going to ground. It depends very much on the circuit if a faster OP can be used. This is a review and detailed measurements of the Fosi Audio V3 stereo amplifier. Low distortion, low noise, and wide bandwidth provide superior performance in high quality audio and other applications requiring dynamic performance. I just took out the 1656s from the Aiyima A7 amp I was testing cos I heard distortion/clipping at times when playing loud music. There are pads on the PCB for a non-PC mount transformer if you have Nov 20, 2019 · 2019-11-22 4:34 pm. Headphones: Monoprice Modern Retro with Brainwavz XL Large Earpads. Jan 13, 2015 · 1,050. (there are DC offset settings for the 'Phono amp' or EQ and for the Control Amp, both of which contain these OP amps). AIYAMA A04 2 Channel Amplifier TPA3251 350W (175W+175W) Stereo Class D Power Amp NE5532 Professional Home Audio Speaker Amp. The Dual Discrete Op-Amp is specially designed for audio and is among the most musical sounding dual discrete op-amps out there. Jan 7, 2015 · Review Highlights: “ The Burson Supreme Sound op amps deliver a wonderfully deep and rich sound. Oct 23, 2005 · Joined 2005. Its distortion is very small, with only 0. SparkoS SS3602+DIP SOCKET - $163. Jul 31, 2021 · Burson V6 Vivid. A quick snapshot of the OPA1656 performance specs: 2. On another post I noted how the OPA2604 op amps (what has been used to "mod" the Nashville 1000, Nashville 112 and Profex II) had made a big improvement over the stock factory sound. Dual OP Amp Set for Aune X8. Each channel of the stereo amplifier uses half of a Burr-Brown OPA2604 dual FET-input, low-distortion op amp to provide the voltage gain. - Burr-brown - Operational Amplifier, Dual, 2 Channels, 20 MHz, 25 V/µs, ± 4. The V3 sounds more refined. New circuit techniques and special laser trimming of dynamic circuit performance yield Apr 26, 2023 · In this sense, the V3, Fosi offers the possibility of replacing the NE5532 operational amplifiers as standard. The one thing that the V6 Vivid lacks is the meat at the lower frequency. It's also inexpensive. The op amp is operated in the noninverting mode using the conventional feedback technique. Nov 4, 2020 · A big improvement in DC offset stability, and also in sound quality, the stock OP amps sounded 'artificial' compared to the new replacements - which sound marvellous. People have a tendency to overestimate their hearing capabilities. *Edit* Somewhere along the way I read the op amps included may be clone NE5532's and somebody replaced them with real 5532's and it was better. Poland. I've replaced the old TL082 in my active crossover with opa2134. It was sent to me by the company and costs US $89. I will show the difference between the OPA2604 vs the NE5532 OpAmp. Farnell UK offers fast quotes, same day dispatch, fast delivery, wide inventory, datasheets & technical support. Very low distortion, low noise and wide bandwidth provide superior performance in high quality audio and other applications requiring excellent dy- (+) namic performance. Buy Nvarcher Oracle II 02 Hybrid Dual op amp Operational Amplifier Replace NE5532 MUSES02 OPA2604 AD827SQ/883B for 12. #2. Initial impression is very satisfactory, the background is dead quiet. To test each amp, I would listen to a song or segment of a song, then swap the amp as quickly as possible so I could keep the listening Products Precision op amps (Vos<1mV) INA1620 — High-fidelity audio operational amplifier with integrated thin-film resistors and EMI filtering OPA130 — Single, 1-MHz, 20-pA bias current, 530-µA power, FET operational amplifier OPA131 — Single, 4-MHz, 50-pA bias current, 750-µA power, FET operational amplifier OPA140 — Single-channel, 11-MHz, low-noise 36-V JFET precision operational Jun 22, 2001 · I'm looking to replace the BB OPA2604 op amp in my Linsley Hood Chiara headphone amp, and the 2627 is the obvious choice. On the op amp front the choices are OPA2604, the cheaper model, and OPA627 the OPA2134 vs OPA2604 vs OPA2107. It's a nice simple build, no need to match parts or make adjustments, so it's perfect for the budding DIY builder. 8610/20 are used in many high end amps. diyAudio Community diyAudio Store. Then I start to listen to all amps. Exchangeable operational amplifiers for individual sound tuning of the Aune X8 XVIII. Chip Amps. 3. I personally wouldn't agree with any of that, unless talking about low end quality, at least not when it's plugged into the F1. With this set, three more op-amps are available and the Aune X8 can be perfectly tuned for individual needs. 00. Motorized volume control can be operated by dual functional remote control. Seattle Area. Both methods generally increase open loop gain up to around 65 - 100 kHz then it will taper off more quickly than a traditional single order compensated opamp. 70054K PC Mount Transformer 110/230V-18/36V 110V-36V 110V-18V 230V-18V 230V-36V. audiopip said: Running op amps on what is effectively +/-6v will/may compromise the performance and introduce audible defects. It's one of the recommended upgrades in Aiyima's blog. Special Shipping. The uppgrade to lm4562 is a no-brainer if youre interested in hifi, and clearly worth 5 dollars . Sep 11, 2021 · Oracle II is the brand new series in the discrete hybrid Op-Amp Oracle family, which has been specifically designed for most general audio applications. 75 usd. 00003% total harmonic distortion and noise (THD+N). 5Vrms signal, 80-kHz measurement bandwidth. Digital Audio DAC I-V Amplifier. ( Currency conversion) ( YMMV) Evaluation platform - Maverick D2 DAC: Maverick Audio. After detailed verification, they can directly replace op amps in any audio system. OPA2134 OP amps. 99 +$6. So not suited for that, too bad. If this is not important to you the AD797 is a better opamp in many applications. I change opamp in socket and amp start to sound as allways. It is available in DIP8 format and can be used in any CD player, DAC or preamplifier that currently uses DIP8-based IC dual op-amp types. OPA2604: 165Kb / 14P: Dual FET-Input, Low Distortion OPERATIONAL AMPLIFIER Texas Instruments: OPA2604-Q1: 310Kb / 16P [Old version datasheet] DUAL FET-INPUT, LOW DISTORTION OPERATIONAL AMPLIFIER OPA2604: 435Kb / 26P [Old version datasheet] Dual FET-Input, Low-Distortion Operational Amplifier OPA604: 693Kb / 16P Thanks for your answer as well. Cost: $250. The Staccato Dual Mono is a pure class A amplifier. $ 70. Here we recommend some replaceable OP chips. Well, I'm not sure why you would think the OPA2604 is fake. Nov 25, 2015 · The Burson v5 is an especially egregious situation because Burson went out of their way to create a low-volume audiophile op amp that bolstered features like gold plated connection, channel separation, and EMI shielding. Therefore, selecting a single type of op-amp to meet the parameters required for the analogue output stage involved analysing data sheets and conducting The OPA604 is a FET-input operational amplifier designed for enhanced AC performance. Where the highs were slightly energetic on the V5, they sound more resolving on the V6 Vivid. Aug 6, 2007 · The following op-amps produce the poorest results; NE5534, NJM2114, NE5532, NJM4558, NJM4560, AD711, AD712, LM833. 6 fa/rtHz broadband current noise. Share. A caution; when replacing parts on older high powered amplifiers is that any change of transistor types may upset the stability of the amplifier. 53 MHz gain bandwidth product, 24V/us slew rate. OPA2604AU – General Purpose Amplifier 2 Circuit Differential 8-SOIC from Texas Instruments. I would not worry about the number of op-amps. I can't tell you what they stand for, the OPA2604AP is a current offering. Sometimes this can make the music sound worse as you hear the faults in the recordings. The current required by the load. An interesting Mar 17, 2019 · That seemed like a reasonable target for the supply current of the OPA1656 as well. The OPA627 has a high slew rate (which can cause oscilation problems), doesn't appear to include +Vcc in the common mode input range, and is a single, not a dual op-amp. Compare specifications, photos and reviews of offers from other stores at a price of 35. Apr 14, 2024. I'd begin with the OPA2604, it's dedicated for the I/V stage and does it very well in my CD player. Region: Asia. OP2604 is a dual, FET-input operational amplifier designed for enhanced AC performance. The transfer function is: = V. It's a fet input device. 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. But much can change over twenty years. The demonstrated op-amps include NE5532, JRC4580D, Sparkos SS3602, MUSES02 and OPA2604. Add to Cart. The OPA2604 is available in 8-pin plastic mini-DIP and SO-8 surface-mount packages, specified for the to +85°C temperature range. May 10, 2010 · time op-amp veteran, has used different opamps with his Dr. item 3 New OPA2604AP OPA2604 2604 OP-AMP for Overdrive Pedals Made in Thailand x 1pc New OPA2604AP OPA2604 2604 OP-AMP for Overdrive Pedals Made in Thailand x 1pc $5. I've purchased opamps on a semi-regular basis for over 10 years. The Oracle II is a high quality and adaptable audio operational amplifier. I run the speaker lines through a Polk Audio active subwoofer. Item: Amplifier (Headphone) Price: £120. Features that would appeal to the audiophile crowd willing to spend an insane $60 on an op amp. Oct 3, 2003 · distortion. SparkOS Discrete Op-amps SS3601 and SS3602 with comparisons to Ne5532/5534, Muses02, Burson v6 Classic, and Burson v6 Vivid op amps. Add to cart. The critical thing in your sentence is: "will/may". Standard Package. The OPA2604 is a dual, FET-input operational amplifier designed for enhanced AC performance. Nov 18, 2023 · 2,733. Haven't tried op amp rolling, just commenting to say that I think you'll find the V3 with the 48v psu much better than the T9 pro. One can almost not find two more different sounding IC:s. This video may help you choose the op-amp that suits your preferences. Harmonic distortion 0,0018% at 1kHz/1W. 2 mv, left -0 mV. There is a $10 discount coupon right now. The pins of these op amps are compatible with OPA2604AP, NE5532, MUSES02, OPA2604, LME49720HA, LME49720HA, OPA2107AP, AD827SQ/883B and other op amps. Jun 19, 2023 · 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, Feb 1, 2006 · It is a FET-input op-amp, so the input bias current is low, but the input offset voltage isn't particularly low, so design your feedback accordingly. If you like the "AD-sound" (AD823/8620/8397). The imagining is better on the V3 than the A07. 4 days ago · OPA2604 TINA-TI Spice Model (Rev. Product Compliance Certificate Download Product Compliance Certificate. Its more fun to listen to the music. 8620 is smoother and leaner, and except for the coarse treble it's very natural and musical. V O = ±3Vp. The amps come with a couple of different options for op amps and inputs. OUT IN. It can deliver 80W at 8 Ohm. Simgot MTW5. 2005-10-23 12:45 pm. The uA301 was used in the very first type of QUAD 405, so I guess you have an original QUAD 405 rather than a QUAD 405-2. Order today, ships today. My original plan was to replace the 2 input stage OP-275 with LME49860 because Zapco replace the OP-275 in their latest AP model power amplifer to LME 49720 (and LME 49860 is a better View: 36. The Bursons are also much more detailed and revealing. Here's a link to a factory surplus transformer that fit the PCB will work beautifully - You will want to make R16, R22, R29, R32 15ohm if using this transformer. Although NE5532 performs well, many audiophiles still want to improve the sound quality by replacing the OP chip. 99 USD OPA2134PA - $26. 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. Jan 21, 2006 · 8920 op amp installed & digikey part# info, wasn't sure if barcode revealed any personal info so marked it out but guessing its just product info. The result is an op amp with exceptional sound quality. Apr 17, 2018 · Wayne Colburn of PASS Labs was kind enough to release a new DIY headphone amp circuit into the wild, the WHAMMY, standing for W ayne' H eadphone A mplifier M ust M ake Y ourself. The Burson V5i is a hybrid discrete/integrated component drop-in replacement for many types of op amp: Dual. Sparko’s Labs SS3602 Dual Discrete Op Amp review. Discrete opamps were discussed on several different threads but always in context of a specific device they were installed in. 5V to ± 24V, DIP, 8 Pins. 99 USD. The OPA2604, a dual version of the OPA604, is one of the finest dual op amps available. Apr 6, 2020 · For dual op-amps I like OPA2604 as they are FET input and are valve like sounding in character with their very nice mid-range, but went further as someone gave me some Burson V5i hybrids which aren't quite as nice in the mids but are better over all. Jan 7, 2021 · There are clearly sounddifferences between opa2604 and lm4562. So I guess my experiment will just be rolling Burr Brown OPA2604's in. 80. Chin Master StoreVisit Store. #9. For one of the OP amp it's optimal with 1k and for the other one it's 2k. Cost: $79. It retails for just $79 on Amazon, including separate power supply. Very low distor-tion, low noise and wide bandwidth provide superior perfor-mance in high quality audio applications. Jun 20, 2023. For this review, I did A/B testing for the stock op-amp in the X6 - the OPA2134 - and the Texas Instruments NE5532 . Hi, I'm having Brice @ Sound Odyssey (phone717-846-6043 or e-mail ads on Audiogon) put the warm sounding AD825 op amps in my cdp (they just snap in)along with the (9) upgraded diodes, Cardas RCA's and damping sheet. The latter method used in SIL was first used in the famous (Deane) Jensen 990 discrete opamp many years ago. HiFi Class A Preamp Tone Board OPA2604 OP AMP Audio Preamplifier Potentiometer Extension AC 12V-15V Description Specifications Customer Reviews (2) You may also . Very low distortion, low noise and wide bandwidth provide superior performance in high quality audio and other applications requiring excellent dynamic performance. My immediate subjective reaction is they sound 'voicey' I use the system (2. AD797. in ma gc uf ro zz qw ox me zq