Opa1612 review reddit. Custom Input Buffer Board w/: The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. Sep 4, 2023 · In this article, we review FiiO’s latest all-in-one unit, the FiiO K9. Thank you Jan 3, 2024 · Pairings Letshuoer EJ07. Dynamics felt better, bass felt more defined and the upper midrange seems to have more air. In this article, we review the FiiO’s Flagship All-in-One device, the K9 Pro ESS. ti. Even AD797 or OP627 cant hold a candle vs OPA1612 in terms of SQ - the difference is HUGE! My preamp sounds best with OPA1612 for gain and OPA2192 as buffer. It is priced at $479. I’m a little concerned about the struct Mar 17, 2019 · But for MC phono pre-amps a low noise bipolar input op amp like the OPA1612 would give the best noise performance. All thoughts and experiences with the product are naturally my own. Extensive listening test showed me that the best sounding result was with the lm4562. There are two major concerns. The order was a piece of cake and the Uplift website standouts among all the competitors as the most feature rich with a live representation of most of the elements of the desk as you build it out. Btw the frequency compensation is used according to the designer in order to get it stable. I've tried replacing it with a number of opamp (OPA2314,LT1057,LT1364,OP275,OPA2604,LME49860). 1-nV/√Hz as well as an extremely low distortion level of 0. Pin can be left floating or connected to any voltage between (V–) and (V+). I purchased a 72" x 78" L-shaped desk with a walnut laminate desktop for $2,037. 1% thin Nov 19, 2022 · FiiO uses the Texas Instruments OPA1612 for I/V stag, OPA1642 as LPF, and customized OPA926 for voltage amplification, similar to the configuration on the original M11 player. Just did an A/B with 2 opamp buffers on my Hypex NC500 monoblocks, which I normally use with no buffer, as the dac has enough gain to drive the NC500 modules direct. I don't care about listening tests or something else, just want to use the technical better one in my amp. NE5532 is a very good amplifier especially for the price ($0. 5). Disclaimer: FiiO sent us the K9 Pro ESS for this review, free of charge. Attachments Jan 6, 2010 · I have an Onix XCD-99 which is basically a Music Hall CD-25. The OPA1612, everyone's favorite $10 op amp, in a balanced configuration, can be had for only $110. Apr 15, 2024 · In this article, we review FiiO’s revised all-in-one unit, the FiiO K9 AKM. Dec 15, 2015 · Texas Instruments (TI) introduced the newest addition to the company’s Burr-Brown Audio line, a next generation of the widely adopted OPA1612 audio operational amplifier (op amp). 887 is the upgrade/optimized version of 789 887: opa1612 + opa564 + low noise optimization 887 has lower noise than 888 788 is opa1602 + ad8397 so it's very different from 789 789 is essentially "886" in a I see that a few people on this subreddit are having trouble figuring out which reviews are real and which ones are paid, or have a lot of questions about bluechew that are still unanswered so I thought I’d share my experience with it so far to help out. Mar 2, 2023 · [ September 5, 2024 ] Review: Vinnie Rossi BRAMA Combining TI’s low-noise OPA1612 with a passive RIAA network with 2% precision film capacitors and 0. The Dec 7, 2023 · Input Opamp Change to OPA1556,this is due to part unified that we found it perform the same as OPA1612 in another project. As always, the article reflects my unbiased opinion. System: Equitech 1. I like the design -- it reminds me of some European brands. - Choice is not permanent and can be changed by the customer via internal jumpers at anytime. Jun 7, 2016 · Before writing this review I would like to say many thanks to Mr Charles from Burson Audio for sending me the hybrid op amps for review purposes. I must test muses now. Simply put, it looks like it is a good midrange DAP that is the most flexible in the market with its features and usage, even compared to A&Ks offerings, and it's coming in at a cheaper price than the M15 did! 23 votes, 24 comments. Mar 9, 2023 · Is the OPA1612 good enough to feed into an external amp? It's in the Fiio K3s but I want to use it as a standalone DAC May 23, 2018 · The first time I did test with opa1642 opa2156 (precision opamp version of opa1656) opa1612. now lets see and talk about my Audio Gears for testing V5i: with dual to mono adapter somehow I managed to install the 2 V5i Single inside the well known LD I+ hybrid tube amp. 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. I’m making a Salvage-style board with walnut sides. It has OPA2604 buffer amps that many have replaced with dual OPA627BP's with good results. These OPAMPs are known for being stable, highly dynamic, and free from distortion. There’s a DAC chip per channel for a lower channel crosstalk and for a (slightly) higher dynamic range compared to their SU-8S and SU-9N units. but Order and Deliver. It comes with an NE5532. I've seen mention of these on various threads in this and other forums. I felt a great improvement overall. May 1, 2022 · OPA1612 are dual op-amps and since there are five of them, it seems that SMSL used all four channels of ES9068, working in a true balanced configuration. Apr 27, 2023 · don't worry, I know a little we are on the basis of 100 dollar dacs on this new entry-level akm and moreover in relation to the tests carried out at the vintage era "pre-serie", wiim had to debug in hardware this version quickly to release a new one version because of real problems in audio. May 15, 2022 · Now i tested opa1612 with lme49720 and 1612 is better in my opinion. 1-nV/√ Hz noise density with an ultralow distortion of 0. 2 analog low-pass filter, each channel with a OPA1612 op amp; 08. Opa1642 sounds a bit smoother and silky at top end but a little bit fat in the mids. Soundstage and placement felt more solid. 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 Jan 10, 2016 · Latest reviews Search resources. Feb 1, 2024 · Hi! I would like to share with you my own listening experience with the new Fosi Audio ZA3. That unit came with the Sonic Imagery's 990ENH discrete operational amplifier ("opamp") in the buffer stage (pre-amplifier). It is hard to get it stable so 1 ohm output resistors are added in each output instead of what i liked 0. Facebook Twitter Reddit Pinterest Tumblr WhatsApp Email Link. But that does not say anything about the SQ. Disclaimer: FiiO provided the FiiO K9 AKM for this review at no cost. /r/AMD is community run and does not represent AMD in any capacity unless specified. Maybe it's too soon for anyone to have obtained and evaluated samples, but -- well -- has anyone yet? • audio·phile: a person with love for, affinity towards or obsession with high-quality playback of sound and music. Apr 21, 2019 · Sound: For purposes of these tests, I started out with a Burson Swing and Fun DAC and amplifier. now it is proven that problems linked to power supply problems (observed by onlyoneme) . Hi! I'm currently working an USB Audio DAC with headphone amp. I have a AK4396 DAC (china made) which use a singe dual opamp at output stage. Disclaimer: The FiiO K9 was provided by FiiO for this review, at no cost. It retails for $529. Hey everyone. It ensures a very low noise density of 1. 2 ampule part of each group of the final stage of the amplifier using a pair of C5171A1930 power tube output; 06. FiiO Company. And bias current vs common-mode voltage has a slope that adds distortion (H2) when source impedance isn't super low and well balanced while OPA2156 doesn't have that problem (but may have nonlinear capacitance vs CM voltage unless the input stage is bootstrapped like in OPA1642). The Fosi Audio ZA3 is a compact integrated class D amplifier that can operate in both stereo and mono mode. First, the USB routing. Transients are stronger, both rimshots of snare drum and big-band trumpets. Bright white LED display is highly responsive as is the rotary Feb 10, 2024 · Thanks Amir, I was just wondering why the review was taking so long. The OPA1611 (single) and OPA1612 (dual) bipolar-input operational amplifiers achieve very low 1. Aug 24, 2018 · As per moderator, here is full article from the site: Objective Guide to Op-Amp Rolling - Part 1 July 30, 2021 Op-Amp Test Board This blog article/post is a deep dive into currently available 8-pin DIP dual op-amps, for those that like to swap op-amps in their designs and/or DIY projects. 000015% at 1kHz. They were ok, very neutral, until I bought AD708SQ. OPA1611 vs OPA134 or OPA1612 vs OPA2134. Disclaimer: This is a sample sent to us in exchange for our honest opinion. Feb 11, 2021 · According to the TI datasheets OPA1612 has less noise than OPA1656. Transparency got way better. As it is, if it measures worse than the eval1's buffer (fe02 iirc) which uses the Opa1612, is it because the buffer board is overall inferior or only the opamp? Dec 30, 2013 · 05. FiiO Company Oct 25, 2018 · Neurochrome hp-1 is essentially the same but using opa1612 and paralleled the whole composite amplifier section. 0" package. Nov 21, 2022 · Oppo BDP-95 => RCF DX 2006 => QSC RMX850 (Bass Amp), Parasound A21 (Mid Amp), First Watt J2 (Horn Amp) Electronics mounted in Middle Atlantic BRK20 rack Welcome to /r/AMD — the subreddit for all things AMD; come talk about Ryzen, Radeon, Zen4, RDNA3, EPYC, Threadripper, rumors, reviews, news and more. com SBOS450C –JULY 2009–REVISED AUGUST 2014 5 Pin Configuration and Functions D Package OPA1611, SOIC-8 D Package (Top View) OPA1612, SOIC-8 (Top View) DRG Package OPA1612, SON-8 (Top View) (1) NC denotes no internal connection. Although, I have to think that all of our hard work achieving ultra low noise in phono preamps goes out the window as soon as the needle touches the vinyl, and circuit noise is swamped by mechanical noise in the system. Aug 22, 2009 · I just noticed today on the TI web site that the OPA1611 (single) and OPA1612 are finally reality. And, anyone can buy it. . Feb 19, 2022 · This is a review and detailed measurements of the Loxjie D40 stereo DAC with Bluetooth and headphone amplifier. A place for discussion, news, reviews and DIY projects related to portable… Oct 15, 2014 · Texas Instruments' OPA1612 (dual) bipolar-input operational amplifier achieves very low 1. Enjoy Free Shipping Worldwide! Limited Time Sale Easy Return. Frankly, this product has some points in favor but some against it. FiiO Dec 28, 2018 · Would have been interesting to see how the TI Opa1612 would have performed as well in the custom buffer board. Buck cap change to 1500uF/80V/Nichicon due to 1800uF/63V/Rubycon not able to purchase. It retails for $499 USD. 1. Nov 8, 2023 · This is a mini-review of the new Aiyima A07 MAX class D amplifier from my "average Joe" perspective. The official unofficial subreddit for Elite Dangerous, we even have devs lurking the sub! Elite Dangerous brings gaming’s original open world adventure to the modern generation with a stunning recreation of the entire Milky Way galaxy. FiiO is one of the most popular, audiophile-oriented companies in the world. I decided to take the plunge and order the freshly announced M15S. Since 2007 they have been Dec 9, 2019 · 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 Feb 11, 2021 · Dont make me laugh, if you can't hear the difference 5532 vs OPA1612 than you should not be very concerned about SQ (in your case). However, when the K3 and the topping DX3 Pro were measured against each other, the fiio lost for power and for noise. The owner then ordered a set of Sparkos Pro SS2590 discrete opamps. This configuration is best for use in setups with a source/DAC capable of higher pre-out voltages. Aiyima was gracious enough to send me a unit for review and evaluation. Mar 17, 2019 · For a DAC chip with a low output current, I would suggest op amps with FET type inputs, either JFETs or CMOS. XMOS USB receiver chip; 07. Mar 22, 2022 · These are probably among the two highest of the best sounding dual opamps around today. H2. OPA1612 is fuller sounding - especially lower midrange but also more dynamic. AskEngineers is a forum for questions about the technologies, standards, and processes used to design & build these systems, as well as for questions about the engineering profession and its many disciplines. 1ohm or 0. Find more 44, 200333149 and products. I would recommend trying opa1612 for people who havnt had a thought about it. Oct 20, 2020 · There are many reviews of audio hardware and AK4118 SPDIF to I2S, ES9023 I2S DACs, DIYINHK ES9016 DAC, OPA1612. It was sent to me by the company and costs US $430. add a optional 12V connector (not populated) for some people that need for power LEDs,etc. There’s not much in the way of either packaging or accessories: the DO400 comes in a simple cardboard box which contains the device itself, the remote, a USB to USB-B cable as well as a power cord. 1M subscribers in the headphones community. This gave me a chance to Jun 23, 2020 · 888: opa1612 + opa564 + flying supply flying supply adds headroom and voltage swing without exceeding the operation maximum of the opamps. Nov 9, 2012 · Total Agree. The OPA1611 and OPA1612 offer rail-to-rail output swing to within 600 mV with a 2-kΩ load, which increases headroom and maximizes dynamic range. May 9, 2023 · Which of the two mentioned OP Amps (OPA1612 or OPA1656) is the better one, in a scientific point of view. These were wired to use USB input to the Swing from my laptop, the DAC (fixed voltage) RCA outputs of the Swing to the RCA inputs on the Fun, and the Hifiman He560, Sennheiser 800, and Campfire Cascade (with Cloth pads) used for all listening sessions. Engineers apply the knowledge of math & science to design and manufacture maintainable systems used to solve specific problems. I found the amplifier to be a lot like the Fosi V3 - apart from the noted Stereo/Mono feature, which I have not made use of. The TI OPA1612 dual operational amplifier benefits from excellent technical characteristics, allowing very good electrical and audio performance. I’m thinking about adding a gas strut to keep the top deck held up in place when I’m rewiring. By using the OPA1612, Fiio drops a bomb. 99 USD. 000015% at 1 kHz. The OPA1612 offers rail-to-rail output swing to within 600 mV with a 2 kΩ load, which increases headroom and maximizes dynamic range. 1 nV/√Hz noise density with an ultra-low distortion of 0. It is equipped with two Texas Instruments TPA3255 amplifier chips which allows it to output OPA1611, OPA1612 www. 33ohm. Feb 13, 2016 · Recently I reviewed the Nord Three SE 1ET400A Dual Mono Stereo Amplifier. Sep 11, 2021 · The picture shows my op-amp rolling, I have tried the ne5532, opa1612, lm4562 and opa1642. Dec 11, 2019 · It's a killer OpAmp, and better suited to non-inverting buffer duties than the OPA1612/2211 Low- and Mid-Frequency Test Signals for Evaluation of Room Modes // Measurements: ESS Hump revisited // Humpify -- apply "ESS hump"-style distortions to audio files Mar 27, 2023 · - Buckeye buffer stage (OPA1612 OP Amp), allowing for Low/Med/High gain settings via toggle switch on the rear. Thanks! The washer trick is good to know too. Sorta newer audiophile here. Home. Together, these apparently outperform theXplay3S Oct 25, 2018 · I've designed a headphone amplifier using OPA1612 as a gain stage and using OPA1622 as output buffers. 54. I only covered the customs fees & taxes. Each channel has 4 outputs summoned, thus lowering the already really low noise by around -6 dB. Sep 23, 2022 · For today’s article, we review the new HiBy RS2 which is an entry-level R2R DAP featuring the company’s proprietary Darwin architecture. It costs $849 USD from FiiO, directly. I use TPS7A4700 and TPS7A33 low noise DC to DC converters with 4 µV/16 µV noise. Oh good to know, I’ll check them out. LME49720 sound is boringand too light. May 29, 2021 · Burson V5i-D, AD708SQ, stock (the preinstalled) OPA1612 Opamps vs Opamps: Stock Xduoo's OPA1612 vs AD708SQ vs Burson V5i-D: Stock opamps are sounding like you hear music from a room next door. Sound is more "color", and "massive". Buy AkLIAM LC5 LC6 Low Noise Low Distortion Class A Discrete Op Amp Upgrade Replace Muses02 OPA627 OPA1612 LME49720 at Aliexpress for . As I use a USB-C connector (top layer, upper left corner), I'm not sure if I get away with how I've connected the two pairs of D+/D-. Both fet based opamps sounds a little bit more solid in the bass (not quantity but the imaging and the texture). Sep 17, 2023 · Tried putting in opa1612 today. r/audiophile is a subreddit for the pursuit of quality audio reproduction of all forms, budgets, and sizes of speakers. Pairing the Soloist with the K9 AKM is nothing but fun, the bass is definitely elevated, it has more punch now and better extension, it is tight and the texture is good as well, all these without messing with the mids and highs, this is evident when listening to Gojira’s Amazonia, the double paddle especially has more punch Dec 28, 2018 · OPA1612/2211 has excellent CMRR but PSRR isn't stellar and strictly follows OLG. The new OPA1622 delivers lowest distortion and noise, high linear output current, and low power, enabling the highest performance for professional and portable audio applications. I was wondering if the OPA2604's could be replace with a dual opamp like the OPA1612 with similar or hopefully better results than the OPA627's Mar 13, 2012 · Like its sibling devices, the X5Max places heavy emphasis on its audio performance, which is why it packs some dedicated audio chips -- Yamaha YSS-205X signal processor, Sabre ES9018K2M DAC, exclusive Sabre ES9601 headphone amplifier and OPA1612 amplifier -- as part of its "Hi-Fi 2. The xlr input and the trigger are two great additional features, as is the nice and efficient enclosure, however the mono is not true mono, and the 13 db of sinad lost is a bit disappointing, especially given a boost certainly not exceptional in power. Low output current would mean the transimpedance gain of the I/V circuit will be high, and the input current noise of the op amp will be a significant contributor. Thread starter Facebook Reddit Pinterest Sep 12, 2023 · Rating: 10/10 Packaging & Accessories. OPA1612 sounds better than any transistor preamp I've ever heard and better then my own 6N6P 2 case -no barrels hold- 36kg monster preamp with a 100% double blind test win rate. Mar 14, 2010 · Tubey, better late than never - I just replaced all NE5532 amps in Benchmark DAC1 with OPA1612 and play it so far for few hours. Dec 10, 2015 · A fair question! And although I was the product definer and systems lead for this part, I don't get 100% control over the marketing folks But, I can honestly say that when we started working on this part about a year ago, I was very adamant that I didn't want to create a part with excellent specs but terrible sound quality in the real world. bmpxbiujgqgcqcutesmlzpppdhgvksairvubpuhecmvbfytgft