Opa1656 sound reddit. Yo look what just arrived! My first DAP since my .

Opa1656 sound reddit It shows that sometimes sound preference is more than test data ? Terry Demol. On the OPA1656 quad, the other issue to consider is the power dissipation in the package gets quite high (for op amps). Reddit's original DIY Audio subreddit to discuss speaker and amplifier projects of To add to what the other user said, i would say that the Magni Heretic has absolute neutral/plain reference sound, while the Magni+ has a signature sound, is more rich, which also mean is less pure, it could sound (perceptually) better, while techinically it isn't. JohnnyNG Active Member. r/Schiit A chip A close button. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). In my honest opinion V6 will be really great addition to any audio system, it uplifts sound quality in every aspect compared to other cheaper Op-Amps. Joined Dec 24, 2019 Messages 285 Likes 313. Gallery The OPA1656 is the industry’s lowest voltage noise high voltage CMOS on the market. 3uV/V = 130dB: 106dB: CMRR: 120dB: 90dB: Ib: 10pA typ I´m afraid the specs make it a bit difficult to compare. Film capacitors MKP2 2,2nF are replaced by wima FKP2. The low voltage noise combined with the low current noise make this device great for low and high impedance applications such as a high gain microphone pre-amplifier. i have a a07(tpa3255 also) with 48v 7. So the source impedance would have to be extremely high for it to have even a minuscule impact on the differential voltage experienced by the opamp. Reactions: I have a question, has anyone compared the sound of OPA1655 OPA1641 OPA 827 OPA828. 4nV/rtHz both flat. OPA1656 ( modern clean smooth sound, nice "deep" bass, which is "the" pro for me for this opamp ) OPA627 ( goes actually into the oldschool direction, it has similar attributes as the burson V6 vivid, but latter sounds more refined ) Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. 72 each What gain are you running in The DC servo in Figure 10. " Let's test this out! AnalogSteph had recommended the OPA1656. S. If you can mod the DAC with the newer OPA1656 and OPA 2156 op amps they will greatly improve the sound. It just seems to me that the $2 OPA1642 will sound just as good as the $10 OPA827, as both specs are superb and well Live Sound PA Systems Instruments and Amps. using OPA1656 for first 2 stages and LM4562 for stage 3 & 4: 5. The OPA1655 and OPA1656 (OPA165x) are Burr- Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. g. 5amp psu and opamps rolled from NE5532(people say they are fake anyways) to OPA1656. (OPA1656) PSU: Yongzhuxing 600W PFC /LLC @48V Extra Caps module Connex Live Sound PA Systems Instruments and Amps. Last week TI put a preliminary datasheet online for the OPA1656, a low noise, very low distortion op amp targeting audio applications and fabricated in a CMOS process The OPA1656 is a Burr-Brown™ operational amplifier (op amp) designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. I personally listen to a lot of vocal tracks, and listening to them through the A30 Pro is a pleasant experience. The op amp offers a temperature range of -40°C to View community ranking In the Top 5% of largest communities on Reddit. Show off your Texas Instruments' OPA1656 SoundPlus™, Burr-Brown™ audio op amp is ideal for maintaining signal fidelity in audio and industrial applications. r/audiophile is a 1, Burson V7 Classic and V7 Live and classic model 2, Sparks 3602 I am very curious about these opamps in this form, some friends said that the OPA1656 opamp is the closest to the Sparks 3602 opamp, they said it was very good, I listened to these reviews, I ordered it immediately, I ran the fosi audio za3 amplifier in XLR mode, the OPA1656S have a The OPA1656 operates over an ultra-wide supply range of ±2. I saw Amir's measurements of their other amplifier, which was impressive. I’m picking up a 3E audio TPA3255 to have a better starting platform. • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. 1) ADA4627-1ARZ = $7. Upload a List Login or REGISTER Hello, {0} Account The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. I use two OPA1656 in parallel in the HP-2. IMHO the outcome was mostly decided by how the opamps responded to the RF coming out of the dac chip. This chip doesn't fit in the common DIP8 packaging, but thankfully @Audiophonics sells a pre-modified OPA1656 for 5 €. Reddit Pinterest Tumblr WhatsApp Email Share Link. 2023-03-05 3:33 pm #18 2023-03-05 3:33 pm LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. OPA1656: High-Performance My benchmark standard op-amp is the OPA1656 which is not the widest sounding, but it's tight, somewhat linear and has a good balance to the sound. Audio, Audio, Audio! Amplifiers, Phono preamp, and Analog Get the Reddit app Scan this QR code to download the app now. 2020-02-27 9:52 am Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. lib SYMATTR Value2 OPA1656 SYMATTR Description TI/BB Audio FET Opamp to get the same symbols as the Benefit is lower dc offset and less distortion also high open loop gain also superior stability. Forums. So I don't think there is a singular correct The OPA1641 would be slightly better. Looks like a composite with the LMH6321 is a match made in heaven. Strong points of the opa1656 chip were: better timbre of both voices and instruments, bold sound (which is really impressive). Joined 2002. Not only was that affordable, I could In fact, I had put in Yanasan's dual 4499 dac the OPA1656 as I/V converter and the OPA828 as diff/ SE summing. OPA1656: High-Performance Home: RME ADI-2 Pro FS R BE—Neumann KH80 DSP, Arendal Sound 1723 1S Work from Home: JDS Labs Atom—Etymotic ER4SR, AKG K371, Sennheiser HD820 Measurement: Earthworks M30 (Reed R8090)—Earthworks ZDT 1021 — RME ADI-2 Pro FS R BE — REW Power: Zero Surge 8R15W-I, Brickwall PW8R15AUD Cables: IEC power cables, I think they are fine opamps other than that, and some revere their sound. The incremental cost of going from a $0. They are always in stock, and I always have a buffer. The OPA1656 operates over an ultra-wide supply range of ±2. HOW ON EARTH can the OPA1656 sound SO much better? Is the 1656 "better", or is it "right" and the other parts "insufficient"? Another observation: I built a little stereo signal summer which is a pair of simple unity gain inverting amplifiers (+/- 9 volt power, 47k feedback and 47k input, non-inverting input grounded, dc coupled, 3 inputs per channel). However, it doesn’t sound like those two chips at all! It’s very musical imo. It is absolutely hopeless otherwise. 5kHz (aggressive I know, but it sounded good to me and made a big difference with the noise) the noise measured 1. 45 OPA1656 brings my total budget up, what, $10 all said and done? (depending on the circuit of course) Might be a totally inaudible part use but it makes me happy. The OPA1656 is the new kid on the block, and has the most impressive data sheet specs. Combining a rail-to-rail output stage with a 3 gain stage architecture in CMOS normally results in regions where the output impedance is inductive. and estimating the result after The OPA1656 stands out as an acclaimed audio operational amplifier celebrated for its remarkable ultra-low noise and minimal distortion capabilities. The fine pitch package of the OPA1622 was considered, by me and others that I asked, to be too daunting a task for the home DIY'r, whereas the OPA1656 in the SOIC package and LMH6321 in the DPAK/TO-263 package were quite doable and the calculated performance based on extrapolating the data sheet distortion curves etc. It uses 6 parallel opa1656 stages per channel with zero global negative feedback. Maybe an AMB Labs 30VDC regulated linear unit will be the ticket. Two identical gain 11 amplifiers were tested. Home I wonder, have anybody actually listened to this nice opa1656, and are able to provide some feedback on its sound ? jan. If you are a critical listener with the best amps and headphones you will hear a slight difference between the balanced and SE outputs. verifitting Will try to look into the OPA1656 :), seem to be a common recommendation or idea for a replacement for the MC33078N. The Opa1652 and Opa1656 sound fantastic in those zishans I had both as buffers and they really brought out the best in driving my favorite op amps. Of course this difference is more subtle than tubes. The op amp offers a temperature range of -40°C to +125°C and is available in an 8-pin SOIC package. The op amp offers a temperature range of -40°C to Many non- believers has been on visit and they all can hear the sound differences. The FET-input architecture achieves a low 2. 00 difference between the two and my production run will likely be less than 5. I reconnected the channels - now the right channel goes to both front ones, the left channel goes to the both AUX channels. /r/StableDiffusion is back open after the protest of Reddit At the end of last year I was talking to Jim @6L6 about some project ideas, and the OPA1656 / BUF634A Headphone amp came up. I'll try to dig it up sometime soon. Even with the stock NE5532 it oscillates randomly. 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). CMRR is not a big issue. 1 to 24/192 16/44. Pre amp or tube buffer is a little box that makes your sound better to whatever you connect it to. It's a big beautiful world out there! Reactions: Elias Most DACs to me usually sound a bit sterile and have a digital edge to them. Overall really love the sound compared to my older speaker setup I started with especially since I just recently got the SB1000 pro last week and am still trying to figure out all the DSP settings. r/audiophile is a subreddit for the pursuit of quality audio reproduction of all forms, budgets, and sizes of speakers. 5a OPA1656/ ELAC B6. 6Vrms Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. Taking advantage of a wide power supply range and mounted on a DIP8 bracket, it can replace many other models. Buying my self my first pair of "hifi" speakers (Aiyima A07 amp). C. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link Sound Impressions Summary. With fuller male vocals from artists like Andrea Bocelli, the A30 Pro translates the vocal range very well, where there is a mostly accurate presentation, with a mild sense of euphony. Yo look what just arrived! My first DAP since my OPA828 has better parameters than OPA1641 and OPA1655 but maybe these opamps sound better?And here is my PCB from RIAA preamplifier i really liked the opa1656 while op amp rolling, are there newer opamps out I didn't know the HD600 could sound this good. Very nice sound In my burson funk it sounds better than V6 (vivid or Posted by u/MSTNeoTheOne- - 1 vote and no comments on first sight i would say the opa627 has these attributes compared to the opa1656 - sounds somewhat thinner, voices sound more lean but at the same time a bit more sibilant - you could say its a bit more analog sounding - not so bass heavy as the opa1656 (the 1656 really shines in bass regions, specially infrasonics are much more "audible") Yes, I did the true tune, different methods as well and the result is the same. I should take off the output cap on the boards and just use the Silmic II on the dac board and do likewise with the OPA1656. Tera-ohm. In my experience for the most subjectively pleasing sound out of an opamp, it needs the lowest noise power rail. For the OPA1656 the input impedance is 100 MΩ || 9. NE5532 is dual channel opamp, so you can try few of these: opa2134, LM4562, opa1642, opa1656 without burning too much money on rolling opmaps. Opa1656 has good phase response at high frequency. Upload a List Login or REGISTER Hello, {0} Account The OPA1656 op amps sound like they might be a nice change and bit more neutral in the midrange compared to the OPA627AU op amps. The 1656 definitely sounds different from the 8512. OPA1656 also has a pole-zero pair in the open loop gain curve to boost the open loop gain at audio frequencies (hence the 53 MHz gain bandwidth product). LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. When we developed the OPA1656, this was also a major design target for us, and the designer and myself spent quite awhile in the lab with previous CMOS audio op amps (specifically OPA1652 and OPA1688) hunting for The OPA1656 needs at least 4. 9-nV/√Hz voltage noise density and 6-fA/√Hz You can get two replacement OpAmps that are better for cheap (<$20, such as OPA1656 or OPA2604), or you can go big money ($70 each for a Sparkos OpAmp. The SBX G6 has a dual mono push-pull discrete amp versus Hel2's 4 stages of TI OPA1656 opamps per channel. The op amp offers a temperature range of -40°C to Just going into some more details with the OPA1656: with an average 3. 7-nV/rtHz) Burr-Brown™ audio fully-differential amp OPA1641 — Single Sound-Plus High-Performance, Live Sound PA Systems Instruments and Amps. Are you hearing any sort of channel compression, distortion or lack of low bass or bass definition with the HD700s? The (un)official home of #teampixel and the #madebygoogle lineup on Reddit. I am feeding the U3 with an Audioquest Red from the PC and have no issues at all, very sweet, detailed sound, well balanced and a touch of warmth. (2 x 4 channels), but I dont like tube sound they provide, I have scanspeaks as drivers and dont need more "tube" warm sound. Source The opa1656 is quite an analytical op amp and doesn’t really suit my ears at least but the opa2134 is another story and the 560s matches that op amp in the U3 very well. I plan to use M3 screws with spacers and washers to fasten the board to the case. Haven't tried OPA1656 after that. Analogue Source. 2021-04-11 11:32 pm #494 2021-04-11 11:32 pm #494 chris719 said: For audio use, I see no reason to buy OPA627 when you have OPA827, OPA828, OPA164x, and OPA1656. Live Sound PA Systems Instruments and Amps. This subreddit is a place to showcase and discuss things related to high fidelity audio. The OPA1641 would be slightly better. Years ago the MUSES 01 was $35 in Japan and it was at the time way ahead of it's time. Amplifiers. Every amp. 81 each 2) OPA1656IDR = $2. Today, I still have the same 2020 amplifier and the opa1656 sound much, much better at a fraction of the cost. OPA1656: High-Performance CMOS Depends on at what frequency you look; noise-wise, the OPA1642 is better below 500 Hz and the OPA1656 above 500 Hz. I used to have a comparison written up between the 2132 and 2604, but I don't know where it is anymore. Get app Get the Reddit app Log In Log in to Reddit. 07433509 volts per microsecond then, for a 100 watt, 4Ω power amp at clipping. In general, I cover all range of audio starting with infra-sound up to ultra-sonic, room- and building acoustics and psycho-acoustics. These attributes make it ideal for both audio and industrial Strong points of the Analog Devices chips were: the impressive clean and fast bass response, the decay of the notes which were clearly audible, the 3D sound-stage, bettering opa1656 sound-stage. This next bit depends highly on your chosen topology for your transconductance amp, but in a worst case, say you had to source 100mA into a near-short to ground. In my case compared to OPA1656, OPA1612, Muses 8820 and some other cheaper op-amps - V6 added more quality in every aspect: Bass became more pronounced, Vocals became more detailed and more In the discussion, @AnalogSteph stated "With this circuit I would explicitly condone opamp rolling. 5Volt, just because the THD with -150dB vanishes in the noise. 5amp (Aliexpress unit recommended by aiyima) and rolled op amps to OPA1656 . It'll struggle a bit with 33 Ω load, though. OPA1656: High-Performance CMOS Audio Op Amp Live Sound PA Systems Instruments and Amps. PCB is 100mm x 50mm Live Sound PA Systems Instruments and Amps. The bass has more texture and force while somehow simultaneously allowing the highs to getting even more The circuit in this thread, OPA1656 Phono Preamp: Split from OPA1656 thread, clearly has a negative real part of its input impedance at high frequencies. diyAudio Community diyAudio Store. Joined 2007. Can that also happen with an OPA1656 voltage follower (that's Heretic : OPA1656 ∗ op-amp for voltage gain with local feedback, OPA1656 (6 stages per channel) as output buffers with local loops, no overall loop feedback. 3K subscribers in the hifiaudio community. Greets Klaus . You are not “wrong“ in describing the Opa1656, it is recommended to be used in portable devices I/V stage because it has a input fet like the opa1612 and the opa1642. I have to admit I was excited when Geshelli Labs popped up in the customer list for OPA1656. MEMS-3S, Subtonic STORM Earbuds: Cypherus 1 10 100 1000 1 10 100 1k 10k 100k 1M 10M 9ROWDJH1RLVH6SHFWUDO'HQVLW\ Q9 ¥+] Frequency (Hz) C006 Product Folder Sample & Buy Technical Documents Tools & Software Live Sound PA Systems Instruments and Amps. (But I always thought the 2132 sounded muddy. OPA1656 The OPA1656 has 6dB more open loop gain at audio frequencies, hence the better distortion. consists of If you pick a point on the 1/f portion of the noise spectral density curve you can see that the two parts are essentially identical. Digital Source. However I like the slew rate of OPA2156 , any pointers on what to improve THD+N ? I am thinking of a composite amplifier so the load and feedback will be driven by the second opamp. 5V to run (I'll assume you're using at least 5V). Member. It has a very good dynamic range and a low level of harmonic distortion. something that usually sound somewhat muted or not distinct at all. I ran LTSpice on it and 2 other versions I found, and they performed identically. a person with love for, affinity towards or obsession with high-quality playback of sound and music. Not targeting Mouser here , most of the others are worse. asy using the ADA4627 as a template 3. From the datasheet of OPA1656 or OPA2156, it seems that at 1Vrms THD+N , OPA1656 performs better . net. Two cases were evalutated – in a Live Sound PA Systems Instruments and Amps. or MUSES, or Burson). Currently rocking the BUF634AU in it. Mello4. I will try the OPA1656 again for Elna Silmic II caps. steveu. Joined 2016. opa627 (in dual), lt1028 (in dual), lm6172 is too much speed, and are unstable in my tube-opamp hybrid preamplifier. Or check it out in the app stores &nbsp; &nbsp; TOPICS and since the NX4 was released, Texas Instruments released the superior OPA1656, with almost half the THD+N, over double the gain bandwidth, The Sound: Ah yes, the all important question; Good morning. 4 mV With the same configuration as above but reducing the feedback resistors by a factor of 10 for the first 2 stages, and increasing the bandwidth limiting caps to a frequency of 7. Expand user menu Open settings menu. zip. The OPA1656 operates over a very wide supply range of ±2. Headphone Systems. ) About OPA1656 DC output offset: depending on gain, a low level circuit with the OPA1656 can show a few mV as output offset. However, switching opamps can make for a different sound profile through differences in noise/distortion levels and other specs. Would you recommend your OPA1656 for this task, or the OPA1642 (i'd be using SOIC to DIP adapters as the older TL072's are in DIP IC sockets). As such, the DC servo is in the signal path of the amplifier, and its performance can affect sound quality. This higher slew rate helps to make details sound more crisply defined. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. New posts Search forums. 2 or Canton GLE 20. The fact that it is injecting a signal at the input stage gives it the opportunity to inject noise and distortion into the signal path. The single-ended uses the OPA1656 opamp, again the standard output opamp used in several Schiit products. The Japan Radio Corporation 4556 op-amp has a much slower slew rate of 3 V/µs since this op-amp was designed to make digital music sound more like amplifier gear from the 1970s. Joined 2015. I dug out all my op amps and had a day of “rolling”. g. I don't care about listening tests or something else, just want to use the technical better one in my amp. depends on the amp your using fosi makes a ton , assuming its the TB10D (upgraded version) with a tpa3255 it will just give you headroom that most people wont need. Facebook Reddit Pinterest Tumblr WhatsApp Email Share Link. I suspect much of the different opamps' "sound" is a reflection of how well they deal with power supply source impedance and RF interference Live Sound PA Systems Instruments and Amps. M. Elac Debut B6. Both devices are very popular and great for audio. 50 NE5532 to a $2. Chip Amps. OPA1656: High-Performance CMOS Audio Op Amp. MEMS-3 . Home The OPA1656 can deliver 100 mA of output current, so it should be able to drive a headphone load. 25 V to ±18 V or (4. Markw4. Digital to Yes the Hel 2 will sound different since it uses an AKM 4490 dac versus a Cirrus Logic CS43131. Altered text SYMATTR Value OPA1656 SYMATTR Prefix X SYMATTR SpiceModel OPA1656. Normally you'd regularily search in the manufacturers new product listings first for any new interesting products. Last edited: 2020-03-12 8:45 pm. Strawberry644 FiiO K5 PRO ESS/A07 48v7. Home There's a thread on DIYaudio about the OPA1656, with a guy from TI telling very useful things. The OPA1655 and OPA1656 (OPA165x) are Burr-Brown™ op amps designed specifically for audio and industrial applications, where maintaining signal fidelity is crucial. 2/SVS SB-1000 PRO My brother has 4 of their bookshelves as part of his a/v system and the sound is If you get an opamps within the specs of the original one and it's an updated one like opa1656 opa1692 etc then having newer tech is always fun and as many can attest sound better. Hi John Yes, did it my way 1. Very impressed by the Fosi ZA3s in mono. The very fast OPA1656 has to be used with great care, meaning good power supply decoupling "An enduring addiction that compels me to invest more and more" Cans: Sony MDR-MV1, AKG K701 IEMs: Elysian Annihilator Ti (2023),& Pilgrim, Fatfreq Maestro SE & Deuce, Shure KSE1200, Technics EAH-AZ80, 7HZ Legato, KZ PR2, Smabat NCO2, KZ PR2, CVJ Konoka Rigs: iBasso DX300 Max, Chord Hugo2 2Go, Hiby R4 Evangelion, Soundaware Well I have 1,000 of them and I can report quite accurately that even in a quiet room they do not make any sound!!! When operating OPA1656 at higher signal voltages with a 2000R load, output voltage then e. I am currently using the OPA828 in my phono preamp in a "composite amp" configuration in tandem with LT1363 and BUF634A, the The two others are opa2107 and opa627. The OPA1656 specifies THD+N at And no, I didn't perform any subjective listening tests to judge the perceived sound quality, so sorry, I can't provide any qualified audiophile journalistic waffle. Show off your This subreddit is for the budget minded audiophile that wants to grow out of soundbars, boomboxes, mini systems, portable bluetooth, lifestyle speakers, and PC peripheral branded audio solutions. Home. and the sound out of the box while powered from my PC's USB port already sounds decent, let alone at this kind of price point. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr I would like to see the OPA1656, a burr brown sound plus chip. OPA1656 sounded worst, Muses 8920 sounded best. 9‑nV/√Hz voltage Currently kind of assessing the OPA1656 following your excellent thread(s) - very modestly in some line output stages of my HIFI. I can't comment necessarily on the sound comparison. So to keep up. KSTR. The op amp offers a temperature range of -40°C to MUSES 8920 was a fake, opa1656 in I/V and opa1622 on LPF sound ok. 9nV/rtHz vs. Texas Instruments Burr-Brown Audio OpAmp OPA1656 SoundPlus™ ∗ using older alternative OPA1688 within 2019 teardown - Magni+ is very interesting for a discrete amp and at the price. Copied the given . Log In / Sign Up; audio, sound, and relevant discussions. Texas Instruments' OPA1656 SoundPlus™, Burr-Brown™ audio op amp is ideal for maintaining signal fidelity in audio and industrial applications. OPA1656 - FET input transistors, 0. Tested a lot of OP, including LME49720, OPA1612, OPA1642, MUSES8920 and MUSES8820. and OPA1656. OPA1656 is less noisy than the OPA827, 2. 5Vrms, Gain=1 and Load=2k The INA851 specifies THD+N at -110dB @ 10Khz and at a BW of 500Khz. Joined 2021. 47 KB · Views: 17 Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. That is, when you do the math, you find that 1 nV/sqrt(Hz) of 1/f noise at 1162 Big difference in price but not necessarily sound quality using your ears, as the test bed Factor in that the ADA4627-1 is a single & OPA1656 is a dual Good info none the less, thanks, JohnC and the the TI/BB team should be very proud of their accomplishments. OPA1656 + BUF634A Headphone amp. When we developed the OPA1656, this was also a major design target for us, and the designer and myself spent quite awhile in the lab with previous CMOS audio op amps (specifically OPA1652 and OPA1688) hunting for AKM AK4490 with TI OPA1656-based filter stage USB Sample Rates & Bit Depth: 16/44. 6. (36-V), low-noise (3. After 3 months, my boards finally arrived! Headphone amp completed! with one OPA1656 taking care of amplification and two OPA1678 op-amps as output buffers. Basically, my recollection is that the 2604 kept the characteristic Burr Brown sound, but the soundstage seemed wider and the clarity was higher than the 2132. 14. Our primary Tubes colour the sound as well by adding distortion. The result is quite spectacular. Autobias-ES3BB-MJL3281-OPA1656-2slice-ZXT851-shift-DCin-Bridge4R-PS+G-1v3h. Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Get the Reddit app Scan this QR code to download the app now. didden. Defo a step forward from the old TI sound I used to know, well done . The OPA1656 is a newer device with better typical room temperature specifications in regards to the following: Test: OPA1656: OPA134: GBW: 53MHz: 8MHz: Slew Rate: 24V/us: 20V/us: PSRR: 0. Again, it's the circuit topology that is the most important to get the best sound out of any op-amp. 9 mA of supply current to accommodate the power supply constraints of many types of audio products. But I would still like to see the OPA1656 tested. 99uV, or a THD+N of -131dB below 3. 3 mV. 1 to 32/384 Output Stages: TI LMH6643 x 2 (1 per channel) TI OPA1688 (4 amp stages per channel) TI OPA1656 (4 Live Sound PA Systems Instruments and Amps. the current configuration for my Bifrost OG dac is I/V & Buffer - OPA1656's/ DC offset - OPA2156. 8. It made a difference in sound and I'm not gonna deny that. There's other valid reasons to give schiit crap but slightly flowery language on a two sentence ad copy isn't really among them because they give more actual details and specs on their designs than pretty much any other audio company. PRODUCTION DATA. And a very noticeable job on violins, something that seems to be a real problem to reproduce once the sound is digitized. So put 10 x OPA1656 in a bag to send costs 16,76 $ , to put 10 x OPA627 in a bag to send costs 130 $ . I tried a lot of opamps and the only one that improved it was the OPA1656. Highs are too high and tinny, dialog is too low, and overall the balance of sound is just bad. aX tech editor. OPA1656 is a bit noisy at low frequencies. When both amps at Vout=3. J. Vendor's Bazaar. The recent swap I did was from opa1656 to opa1612 in the v3. I did build that and the slightly modified schemo is attached. Pete (Turion64) is right, selection of opamp requires synergy with the input cap. 9 pF. Home The OPA1656 has a slightly warmer and more musical sound compared to the OPA1612. For example, at 10Hz both parts are approximately The Opa1652 and Opa1656 sound fantastic in those zishans I had both as buffers and they really brought out the best in driving my favorite op amps. Source & Line. Or check it out in the app stores &nbsp; found in the OPA1656 datasheet. Aiyima a04 with LM4562 is more dynamic, goes deeper in the bass and sound clearer. Audio, Audio, Audio! Amplifiers, Phono preamp, and Analog Audio Review. diyAudio This one is about OPA1656, an opamp that betters many old types apparently because of improved CMOS technology. Manufacturer: Part # Datasheet: Description: Texas Instruments: OPA1656: 3Mb / 38P [Old version datasheet] OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown??Audio Operational Amplifiers DECEMBER 2021: OPA1656: 3Mb / 42P [Old version datasheet] OPA165x Ultra-Low-Noise, Low-Distortion, FET-Input, Burr-Brown™ Audio Operational Amplifiers So to put 1 in a baggie exactly like the OPA1656 , they charge 15,69 $ !! , to put 10 in a baggie : 130 $ !!! TI does all the work and Mouser leaches more profit off from it. MUSES8820 is the best, IMHO. The filter m33078 is replaced by opa1656, by opa1662 subwoofers. Opa1656 inverted the left front and AUX channels at the input (I will explain later). OPA1656 Phono Preamp: Split from OPA1656 thread View community ranking In the Top 1% of largest communities on Reddit. TPA3251d2. Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Share Link. ES9038PRO best I/V op amp. Currently rocking the I have the Opa1656 and it’s fantastic! I’m dying to Menu. I just haven't gotten around to designing and 3D Also, the input impedance of an opamp is extremely high. DAPs: Hiby RS6 (NPAudio), iBasso DX320 Max Ti (NPAudio EXN OPA1656), L&P E7, Sony WM1A (NPAudio EXPMv5) DAC/AMP: Chord Mojo 2 + Poly, L&P EA4, Sound Dragon Sonata IEMs: Brise Audio Fugaku, Hidition Viento-R, Penon Voltage, PMG Audio Apx, Sony IER-Z1R, Soranik Basilica . The OPA1656 immediately raised my attention, plus there was/is a long thread about it on diyaudio. 25 V to ±18 V (4. I was expecting them to do a decent implementation with OPA1656 and they didn't disappoint. I built up a board last night and the sound is nice! Concepts considered for this prototype board included: Make it 100mm wide to slide into a Hammond chassis. OPA1655 , OPA1656 SBOS901C – MARCH 2019 – REVISED SEPTEMBER 2022 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. OPA1656, gain-bandwidth product 53 MHz LME49990, 110 MHz OPA1612, 40 MHz Behaving well: OPA2604, 20 MHz Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. I usually pad my Mouser orders with a couple of OPA1656's and/or OPA1641. Optimal Live Sound PA Systems Instruments and Amps. The 1656 is a clear, fast open sounding op amp while the 2156 is warmer and more organic sounding. I would advise checking up on forums like here or Reddit to see if people have your amp or DAC and have already tested with different op amps. To help others to understand what other The whole point in following this passion is to experience difference in sound, atleast to me If you are really interested in checking it out, you are whole heartedly welcome to try swapping em. It offers exceptional performance in almost any audio application. Ok, I know the dc offset is a result of each opamp chip's final laser trim and can/will vary. Anybody know beter opamp than OPA2604 with realistic "analog" like sound and good soundstage? (Without discrete opamp). OK. 9 v/µSec for a OPA1656 at clipping. The A07 is running with a 48v 7. My First DIY Headphones, Featuring Handmade Planar Magnetic Drivers from Torac Audio and the op-amps in the low pass filter section were swapped from the original TI OPA1652's to the technically superior OPA1656's. Community resources, and extensive FAQ for players new and old. OPA1656 swapped in to I/V and buffer on BF2 analog board. Burson's supreme-sound-opamp-v6 https://www Now you are able to audition the AD746 and the LT1124 and the AD8599 and the OPA2209 and the LME49723 and the OPA1656. Open navigation Go to Reddit Home. I think each of them needs proper burn-in about 150hours or Live Sound PA Systems Instruments and Amps. It will use an OPA1656 opamp with a JFet buffer. Digital Line View community ranking In the Top 1% of largest communities on Reddit. It has the most stable input capacitance vs. I decided to make some prototype boards. Solid State. Towards a wideband non switching Auto Bias power amp. ClaudeG. 9mA: Rating: Catalog: Operating temperature range-40 to 125°C: Vn at 1 kHz Typ: 4 Today I tried my new Burson V5i-D and OPA1656 along with stock OPA1612. linearaudio. Opamps do indeed change the sound if only ever so slightly in most cases. OPA1656 will not have the flat, 5 ohm, output impedance of the OPA1622. The op amp offers a temperature range of -40°C to Texas Instruments' OPA1656 SoundPlus™, Burr-Brown™ audio op amp is ideal for maintaining signal fidelity in audio and industrial applications. My main View community ranking In the Top 1% of largest communities on Reddit. On the other hand, the OPA1656 is a very popular op-amp which has a slew rate of 24 V/µs. In OPA1656's datasheet TI also shows the the combination of OPA1656/BUF634A w/o output resistor and states it's stable. And I've tried many Opamps as well: the stock 5532, some directly purchased from TI 5532P and 5532AP, LME47920, LM4562 and finally some OPA1656 and OPA1612 on adapters. I will need to work on a linear power supply. It's a virtually unknown chip as when you search on Digi-Key it doesn't come up as soundplus. The original used an "AD8512 with precision thin-film resistors, DC-coupled with DC servo". 10^12 ohm. With the Bose soundbar the sound coming from my TV felt like it was coming from the entire wall, the So os just feels like a speaker projecting sound directly at my face. Burr-Brownâ„¢ Audio^Premium Sound: Iq per channel Typ: 3. Composite amplifier is one of the best application with opa1656. Since your L/R channels already feature the Oracle II 02cohesive overall sound, complementing the Oracle II op-amps. The newest hot-shot FET opamp is the OPA1656; but it is also SOIC-8 and needs an adaptor. I also use since it came out, the 828 as front end in Penasa' s Evolution amp, a composit power amp with dual 3886 buffer (current pump) in output. Our primary goal is insightful discussion of home audio equipment, sources, music, and concepts. 5nV/rtHz, over 80Khz, gives 0. JFETs and CMOS transistors available to the chip designers. Modern View community ranking In the Top 5% of largest communities on Reddit. and some revere their sound. New with Op amp chips, any recommendation for Beyerdynamic A1/A2 Would like to exprement a bit with the sound. This OPA1656 OPA from Texas Instrument offers very good performances for audio use. Very clean and natural sounding amps as standard, not as full or punchy as my Naim but still impressive for their size. I have tried muse02, muse 8920 didnt feel they were worth the hype or price. I've had the Burson V5i, and the V6vivid and I have no space to put a sparkos labs opamp single or dual channel. Someone in a previous post had mentioned putting a resistor in series to help lower the noise and that is what I've also done, but went a tad further. Note that while the OPA1656 is unity gain stable, it does have an internal compensation circuit that causes a phase wobble in the 1-10 MHz region. 5 V to 36 V) on 3. Added a new OPA1656. The op amp offers a temperature range of -40°C to An update from me. After 3 months, my boards finally arrived! Headphone amp completed! with one OPA1656 taking care of Yes. Assuming the voltage noise has a white and a 1/f part, which seems to be correct, for the total RIAA- and A-weighted noise, what matters is the noise around 1162 Hz. Buggle2 Riaa board. Having LM4562 in both amplifiers and they start to sound the same. com and all are unity gain stable. . (36 V) geringes Rausch OPA1641 — Einzelne Sound-Plus, hochleistungsfähige Audio-OpAmps mit JFET-Eingang OPA1641-Q1 The beads and resistors in series really help clean the sound up in the high frequencies. The subreddit dedicated to those who work in the live sound industry Members Online. It's best use as an alternative to opa1612 when noise is not a big concern. No not obsolete. common mode voltage that I've measured on any op amp. 2. 2023-11-21 9:12 pm #834 2023-11-21 9:12 pm Facebook X (Twitter) LinkedIn Reddit Pinterest Tumblr WhatsApp Email Link. lib file into the related LTSPice folder 2. maybe need to try opa1622 on I/V. Impact on the XLR Channel OPA1656 in XLR: With the OPA1656, you’d get a more engaging and dynamic sound, which could work well if you use Performance of OPA1656 is better, there's about AUD3. I have an OPA1656 story that may be interesting especially to whomever wants to build the RIAA preamp example in the apps section of the data sheet. Yes. just going by specs it should be better but i dont hear much, its def louder tho so if Even replacing them with genuine op amps would likely improve your sound. The two stand out winners were OPA1656 and Oracle II 02, the latter being slightly less grainy and with smoother high frequencies. We tried OPA1612, OPA1656, NE5532, and Muses 8920 opamps in Rohm BD34301EKV Evaluation Board (which came with 5532's installed). • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. I'm using Nichicon Muse BP for the input caps, it adds bloom to the sound and sparkling highs which is not compatible with OPA1656 sound. diyAudio They sound great but so did the LM4562. I'm looking for opamp better than OPA2604 witch big soundstage, and "analog" like sound? But e. Members Online. It is quite hard to tell differencies in SQ beetween these 3 opamp from first impressions. Note that the OPA1656 is described as 'FET-input', and I expect a lot of the remaining circuitry is bipolar transistors. Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. But I guess that it is the overall level that is of interest. Please excuse the following, but it's the best way I can describe the improvements. Except opa1656 rest of opamps are available on rsdelivers. 1 pF (differential) and 6 TΩ || 1. Class D. Get support, learn new information, and hang out in the subreddit dedicated to Pixel, Nest, Chromecast, the Assistant, and a few more things from Google. 00003 THD, Voffset = 1mV - I'm thinking to use this one for servo. Reddit's Loudest and Most In-Tune Community of Bassists Electric, acoustic, upright, and otherwise. The OPA1655 is the single channel version of the OPA1656. Lots of sound issues are really a factor of how well your clocks are, on first sight i would say the opa627 has these attributes compared to the opa1656 - sounds somewhat thinner, voices sound more lean but at the same time a bit more sibilant - Again, it's the circuit topology that is the most important to get the best sound out of any op-amp. There seems to be some distortion at high inputs, but the sound is ear-splitting well before then. Below is a comparison between OPA1656 and OPA1642. 5 is in the feedback path with modest gain at low frequencies. I think OPA1656 sound a little better but most likely it is just in my mind. com with a Live Sound PA Systems Instruments and Amps. I have settled on 4x OPA1656 in my Burson headphone amp and 4x OPA1655 in my Ayon DAC. fbm puz olhlqt keixt cxdun fmcz dir vwdcmm qbqz ciaavjvb