Fosi za3 op amp upgrade
Fosi za3 op amp upgrade. The tone and timbre are good with the Fosi, but the other amps are better. In mono mode at 100w, you get -78dB SINAD. An unfiltered pre out is more flexible, subwoofers have their own filter anyway. Use tweezers to carefully remove the op-amps. This works really well and sounds great, however, the mains are playing at full range, as is the Buckeye amp driving them. Feb 10, 2024 · 139. Is it supposed to stop at minimum, and if so, how is the best way to tighten the nut and washer to do so? Removable NE5532 Op-Amps, can be replaced in case of failure or to upgrade to other models with different sound qualities. Oct 10, 2023 · In home use, with short cables connecting source to amp, there will almost never be an audible noise benefit from balanced inputs. 99 $ 225 . The ZA3 uses a push-type power switch and a taper A volume pot, making the volume rotation angle wider than the V3, making it easier to adjust the volume. I've also tried OPA2604 - little bit smoother than the NE5532. The build quality is outstanding, basically using the lesson learned with the V3, Fosi Audio have gone up to the next level with this Amplifier. Feb 10, 2024 · Fosi Audio said: Yes, it's coming soon! Lets see if it comes close to the 3e audio 260-2-29A amplifier, as this seems to be the "state of the art" for TPA3255 based amplifiers. Don't you really need a pair of monoblocs in your system?PUR Feb 29, 2024 · The Burson V7 discrete opamps set a new benchmark in sound quality, earning the trust of leading industry partners like Union Audio and SAL, as well as recording engineers and DIY audio enthusiasts worldwide. Probably due to the high input gain on the ZA3 that @amirm mentioned. 0/2. 5dB allowing him to keep the volume control lower on his preamp. 48 in x 0. Jan 26, 2024 · The BT20A Pro added the iconic copper coloured volume knob and Fosi realized that customers were very interested in Op-Amps. Sep 22, 2023. If it has volume and BT input options, it really needs a remote. g. Also high pass and low pass would sum flat only if subwoofer and main speakers are time aligned, or phase is also adjustable. The red plug represents the right channel, while the white plug May 26, 2024 · Updated. Feb 10, 2024 · All seems better, with the same tonality, but all better (precision, space, reality). 98 This bundle contains 2 items Dec 20, 2023 · The product description of the ZA3 in the Fosi Audio website has this to say about the product’s op-amps: ”Personalize your audio experience with the op-amp rolling feature! The ZA3 stocks five swappable op-amps for left and right channel outputs, balanced input, and subwoofer output. No noticeable power on or power off pops. Nov 15, 2023 · well, since i last posted, i ended up buying two aiyima a07 max amps w/the 48v/5a power supplies. e using it as a power amp). PFFB Load Independence. The SS3602 upgrade to the ZA3 offer more transients, more harmonics and fuller bass than the stock Op Amps. They included the specs of the four present on the board and ensured Oct 2, 2023 · Regarding the power supply, I personally tested the PSP on Fosi V3 and BT20A PRO, with opa Muses02 and sparkos SS3602 respectively, tested when powered with: Fosi Audio - 48V 5A - Model: JYH23Z-4800500-has stability and performance, good power. All gave good sound and satisfactory volume levels. The Best Upgrade is also the Easiest Upgrade. So, it requires a pre-amp for Volume control, and you need 2 x V3 Mono’s for stereo, one for each speaker. The benefit is primarily more power due to one PSU per channel and the separation of channels between the two. Power Input Range: DC 24V-48V. Fine-tune your sound with op-amp rolling for a personalized audio journey. So if anyone is interested in running dual monoblocks this is your best bet. All-Aluminum Alloy Chassis. Feb 11, 2024. Power Supply: 32V/5A, 48V/5A. If those features are useful Sep 22, 2023 · Lunatic Member. At only 29mm (1. My primary goal was to reduce the space required for Engineered for the audiophile who needs flexibility, the Fosi ZA3 amplifier boasts dual-mode capability—offering both stereo and mono outputs for diverse audio setups. I’m currently seeing it for $89. But don't expect any technical data on this review since I am not a Jan 7, 2021 · AIYIMA A07 TPA3255 Amplifier Measurements LM4562 option I received my A07 yesterday, on January 6, 2021, shipped from Italy. Experiment with compatible DIP8 dual op-amps such as Sparkos SS3602, MUSES02, OPA2604, OPA2134PA, OP249, AD827, RM4558, LM4562, LME49720HA, etc. 98 $229. SUB-OPAMP1: Handle low pass crossover (20-300hz) XLR-OPAMP: Amplify the XLR input signal. Nov 15, 2023 · guys, this Fosi ZA3 seems like to be a perfect match for use a a power amp for my atmos speakers on my denon avr3800 and only for one reason, because it has a 12V trigger. With a cross over imbedded in the DAC, or the sub out in the amp, you can alleviate the stress the lower frequencies place on both the amp and the main speakers Jan 7, 2024 · Mar 22, 2024. #243. Dec 20, 2023 · I installed a pair of Muses02 op amps I bought from Fosi's website into the ZA3 and have been running them for a couple of weeks. Aug 19, 2023 · I've owned several other Class D chip amps in the past, including the Aiyima A07, SMSL AO200 and at least a couple different TPA3116 Topping and SMSL models. Dec 20, 2023 · Overall, it sounds pretty good, but a/b-ing with the RA150, the Fosi ZA3 sounds “wetter,” while the Alesis definitely has a drier, crisper sound. a second ZA3 in mono mode. Jan 4, 2024 · Paralleling, as this amp does, results in each side seeing double the speaker impedance. The ZA3 is also designed for customization. 5mm jack. Compared to the Pass DIY Sony VFET Class A amp and the McIntosh MC-240 tube amp, the Fosi ZA3 is a bit less refined, but this is with direct comparisons. Feb 10, 2024 · 33. 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. SS3602 Discrete Op Amp Review. View attachment 348770. Apr 1, 2024 · Fosi Audio said: This is a follow-up on the 48V/10A power supply. Dec 20, 2023 · I review and test the Fosi Audio ZA3 power amplifier, which works in stereo or bridge-mode mono. Both the Fosi V3 and the Aiyima 07Max (and now Fosi ZA3) use NE5532 chips. Nov 15, 2023 · + Runs cooler (or barely warm) like Fosi ZA3 with Fosi 48v PSU ~ 50v smoothing caps, although I have had no issues with 48v PSU but many would be skeptical about 48v PSU with this amplifier + Aux or line out, can be used with an active subwoofer with RCA input, and/or stereo signal input to another amplifier ZA3 is more than just a product; it's the crystallization of joint efforts between Fosi Audio and our users. My experience has been that the Fosi (both V3 and Za3) sound better with a preamp feeding the Fosi with the Fosi's volume full up (i. Sparky14-1982. Oct 10, 2023 · Fosi can use a slide switch where you will need your nail, a coin, or a flat screwdriver to slide it up and down near the mono RCA plugs and above the 'sub' out. Purchased at Amazon. This is yet another demonstration of how a more premium casing and a higher quality aesthetic perception affects the perception of sound. 14in) high it is the smallest discrete type op-amp in the world. This is made available through its recently acquired distributor and reseller status for SparkoS products. SUB-OPAMP2: Amplify the sub signal. This is a quick and easy tutorial on how to replace the OP Amps inside the Fosi Audio ZA3 amplifier. Op-amp swapping carries over from the V3 to the Fosi Audio ZA3. Feb 10, 2024 · This is a review and detailed measurements of the Fosi Audio ZA3 stereo amplifier with balanced XLR inputs. • 9 mo. BT30D Pro / A07 Pro), it's worth an extra $10-20 for most people to get a remote for input, volume, and power control. Even the coveted OPA627 monolithic op amp, with a price tag of over 25 dollars, has 30dB less gain 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. Original box, power supply, packaging included with each ZA3. Apr 19, 2024 · I have my 2x ZA3's operating in mono mode and both are connected using XLR cables. That switch on the right, potentially very harmful. After managing to open up the chassis, I noted the orientation of the stock TI NE5532 op amps at the TPA3255 Class D amp's inputs. This small Fosi Audio ZA3 integrated amplifier has the particularity of being able to operate in both stereo and mono mode. Feb 10, 2024 · The RCA out goes to a 12" sub with the cross over set at 65Hz. Fosi Audio - 32V 5A - Model: SW202732005000D- ok, fidelity in hearing, low power. The more expensive option would be an Ncore/NcoreX/Purifi amp (from Buckeye). It conveniently fits wherever they’re used. Fosi Audio TB10D is an analog input (RCA) Class-D audio amplifier that easy to install to build your home audio sound system. Additionally, the amplifier is equipped with a trigger interface for an enhanced user experience. R-OPAMP: Amplify the right input signal. Jan 13, 2024 · FOSI AUDIO ZA3 Stereo / Mono Amplifier. Oct 8, 2023 · During the past week, I have switched back and forth between the older Aiyima A04 and A07 amps, the Fosi V3, and the new A07 MAX amp, and varied between use of the Fosi 32v 5a power supply and the Aiyima 36v 6a power supply. The enhanced tightness in the bass brought forth a newfound level of detail and definition, without compromising depth or reach. The FA3, driving a pair of JBL 2225 15" woofers sounds somewhat "boomy Each ZA3 has two SS3602 Op Amps - one for the left and one for right channel. The TPA3255 which is a heart of this amplifier is my favorite D-class Amp chip. so, i opened them up to install the op amps. The budget option is Fosi v3 or ZA3. ly/fashop-Op-AmpsSparkos 3602 comes with a free DIP Socket, 👍we have b Jun 20, 2023 · My setup is fosi audio p1 as pre amp, fosi Audio v3 as power amp, mb 42x speakers and I connect preamp to smartphone using rca to 3. Currently, my setup consists of a ZA3 (Stereo) paired with the Burson V7 Classic. Jan 1, 2024 · The midrange is clear and smooth. SMSL-D6-S then feeds ZA3 via short XLR cables. Mar 13, 2024. If I remove preout cabel from fosi audio v3 distortion goes away. while this refers to the FOSI ZA3 audio amplifier, with integrated TPA3255 high-end Class-D amp. Apr 29, 2024 · Unlike previous Fosi Audio Amplifiers that included ‘monoblock’ options like the Fosi Audio ZA3 (and the similar Aiyima A07 MAX) the V3 Mono is a pure monoblock, power amplifier. tutorial on how to replace the OP Amps inside the Fosi Audio ZA3 amplifier. What is in the Box, internals and overall Build Quality. Just today Fosi announced the ZA3 Balanced Dual-Mode Class-D Amplifier. The amplifier has really dressed up from its earlier origins of common enclosures in budget class amplifiers. From dual-mode versatility to audiophile-grade components, this amplifier offers rich connectivity, advanced heat dissipation, and enhanced scalability. The A07, just like the Fosi v3, comes with NE5532 stock. To begin, I'm a big fan of Sparkos SS3602. Every op-amp has a direction, please find the number 1 mark or the circular/semi-circular notch on the cover of the op-amp, align it with the position marked O1 on the PCBA board, and plug the op-amp into the socket； 3. This is a review and detailed measurements of the Fosi Audio ZA3 stereo amplifier with balanced XLR inputs. A. It incorporates two TI TPA3255 amplifier chips enabling it to deliver up to 2x150W or 1x240W @ 4Ω. The front panel of the amp has 2 switches and a big orange metallic knob while the back panel holds all I/O connectors. Oct 10, 2023 · Around 1kHz: speaker impedance = 10 Ohms, amp output impedance = 15 Ohms. Whether enhancing the soundstage of your vinyl collection or powering a home cinema, the ZA3's innovative features, including its rich connectivity options and audiophile-grade Fosi Audio is excited to announce the release of its latest product, the ZA3 balanced stereo/mono amplifier, a cutting-edge addition to its high-quality audi Feb 10, 2024 · For example, at 100w of output, stereo mode has -74dB SINAD. Dec 18, 2023 · The Fosi Audio ZA3 is an impressive amplifier, offering high-quality sound, versatile features, and efficient operation. So, two ZA3 in Mono will output less than 2dB higher volume than one ZA3/V3 in stereo. My primary goal was to reduce the space required for Feb 10, 2024 · 1,450. If that is true do you only use one of the outgoing opamps? That for the right channel Apr 19, 2024 · The ZA3 stocks five swappable op-amps for left and right channel outputs, balanced input, and subwoofer output. is there anything similar with 12V trigger input other then ZA3, in that price range of $100-150, and has anybody tried does 12V trigger actually work and does it shutdown Mar 16, 2024 · The ZA3 stocks five swappable op-amps for left and right channel outputs, balanced input, and subwoofer output. cost was <$170 shipped. My house system is doing that well. - then I changed the original opamp with the SS3602 (around 200€ for 2). Compared to a similar Class D amp that I modified, the Aiyima A04, this amp has a more solid foundation with a more stable image and deeper soundstage. The Fosi Audio ZA3 has a clean and modern design with a rectangular and short form factor. This Fosi V3 is the best of the bunch, a simple, genuinely powerful/useful, truthful, nice-looking and nice-sounding amp that can be tucked pretty much anywhere. I would rank these amps as follows: MC240 > Pass DIY VFET > Fosi ZA3. Apr 24, 2024 · Unlike previous Fosi Audio Amplifiers that included ‘monoblock’ options like the Fosi Audio ZA3 (and the similar Aiyima A07 MAX) the V3 Mono is a pure monoblock, power amplifier. Apr 1, 2024 · Apparently V3 Mono is internally balanced due to PFFB, because ZA3 is internally not balanced. 240W Rated Power Output. In monaural mode, only R-ch is enabled. Feb 16, 2024 · This is a short review regarding my experience with Fosi Audio BT20A Pro amp, which is an upgrade and a newer version of the BT20A. My ultimate goal will be to horizontally bi-amp my top speakers with four (4) mono amps which their own power supplies, and use my ZA3 to power my Apr 24, 2024 · Unlike previous Fosi Audio Amplifiers that included ‘monoblock’ options like the Fosi Audio ZA3 (and the similar Aiyima A07 MAX) the V3 Mono is a pure monoblock, power amplifier. 96 dB. I believe Fosi Audio are preparing a separate Pre-amp Feb 10, 2024 · New Member. The gain is also higher in mono mode by 1. TB10D adopts TI TPA3255 high-performance Class-D power amplifier chip enabling true premium sound quality. I suppose internally balanced design is a good thing, but this means full potential is realized when feeding the amp true balanced signal. Dec 20, 2023 · I wanted to share my experience with the Burson V7 Classic op-amps, as I feel you might be interested based on your post. It looks a lot more "beefy" and substantial. 99 on Fosi’s website and Amazon, but that’s with a 32v power supply. Insert the RCA or XLR audio cables into the corresponding left and right channels on the ZA3. Swappable Op-Amp Design. Dec 18, 2023 · Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio Component Mini 2 Channel Mono Amp and Fosi Audio SK01 Headphone Amplifier Equalizer Preamp $225. One of them is a linear Elevate your audio experience with the Fosi Audio ZA3 Balanced Stereo Amplifier. Following the same procedure, at 10k the power delivery is -4. Our supplier Huntkey has provided us with a test report for this power supply, along with a video of the actual test, which you can review below. Fosi Audio ZA3 Dec 31, 2023 · New member. 99 $229. This is an upgrade to the previous model, which by many accounts was not gre I just replaced the op-amps inside the ZA3 with 3 MUSES02s; they sound amazing! However, upon reassembly, I noticed the volume knob doesn't stop at zero; . 57 in) the Supreme Sound Op-Amp has almost the same footprint as a standard through-hole IC op-amp. i also bought four akliam lc2 discrete class-a op amps; cost was $60 shipped. #20. This is much easier for most amps to handle. 1. 10/ (10+15) = 0. sparkoslabs. Dec 20, 2023 · I had ordered a couple pairs of op amps from Fosi Audio to try out in the ZA3: Nisshinbo MUSES02. They are an appreciable upgrade from the stock op amps that came with the it. The main shell has curved edges and lateral vent grids with an orange accent beneath them. But both the PC and Wiim have separate level output controls so they not. At this point result is just astonishing, sound is so high quality, so real, giving me goosebumps. The V7 combines cutting-edge circuitry and craftsmanship, offering not just superior sound but also an impressive aesthetic. Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio 2CH Mono Amp with TPA3255 Chip. Sep 22, 2023 · Lunatic Member. Overall, the amp looks aesthetically The ZA3 stocks five swappable op-amps for left and right channel outputs, balanced input, and subwoofer output. fr. 1 outputs (i. For example, when driving our 4ohm magnepans, each side of the amp sees an 8ohm load. Also, to me the ZA3 with Sparkos' appear to draw a soundstage with more depth than with the stock opamps. Apr 27, 2024 · The Fosi Audio ZA3 is no different and it offers the ability to swap out the five op-amps with compatible DIP8 dual op-amps like the Sparkos SS3602, MUSES02 and OPA2134PA which are available for purchase on the website as well. Music has been crucial and plays a big role in my life, from organizing to attending shows, collecting records and enjoying music 24/7. Feb 10, 2024 · When using this cheap amp with RCA and without using the sub you only add $ 160 to the initial purchase price ($150) effectively doubling its price and you get the exact same performance but of course the owner knows he used the best opamps not realizing the class-D amp determines the sound. My first thought was that they sounded "wet" compared to the Alesis RA150 bridged mono amps that they replaced. The amplifier delivers about 8dB less power into the load compared to if it had zero output impedance. Oct 10, 2023 · FOSI AUDIO ZA3 Stereo / Mono Amplifier. Its ability to run cool, coupled with its mono block support and balanced input options, positions it as a competitive option in the audiophile market. You would run this amp in mono mode to handle very low impedance speakers. Feb 10, 2024 · Mar 7, 2024. The SS3602 op amps are $79. From an audio point of view, the two products are exactly equivalent, with a minimal greater instrumental quality in favor of the V3. As for the feed to your sub, I am not sure! Burson Audio V5 Discrete. I get the hiss when I turn the Fosi amp to maximum. Toni Mas said: I don't agree, because in order to get a flatter in room response, some fine tuned mismatch between high pass and low pass is much better. I believe Fosi Audio are preparing a separate Pre-amp Mar 11, 2024 · MODDING AND HOT-RODDING. This feature allows for purer sound quality, free from unwanted noise and interference. The range of the volume knob is more gradual with lower level sources (computer built-in sound output, Apple USB-C dongle, older LG phone with quad DAC). This power supply can indeed operate stably at a 10A current. Regarding this ZA3: a) it measures worse than the V3. Noise & ripple test also included. Jan 25, 2024 · review. In fact through the entire power range, right up until 200w, mono mode has a much more stable and better SINAD. Fosi Audio is excited to announce the release of its latest product, the ZA3 balanced stereo/mono amplifier, a cutting-edge addition to its high-quality audi Feb 10, 2024 · The Fosi builds volume quickly when connected to my CD player's line level outputs. It’s $109. b) it costs more than the V3. Dec 20, 2023 · One of the standout features of the ZA3 is its support for balanced inputs, a first for Fosi Audio amplifiers. Apr 1, 2024 · Fosi ZA3 + Sparkos Op-amp - The real deal - Don't miss out !!! Interested in Sparkos Opamps - visit www. Oct 10, 2023 · If I understand things right, when used in mono mode it only use one channel from each amplifier. TPA3255 features an advanced integrated feedback design and proprietary high We’re checking out the new and improved Fosi Audio TB10D 2-channel, Class D amp. The Aiyima A07 upgraded with the SS3602 Discrete Op Amp. I received my via their Kickstarter program at roughly $125 with the 48V power supply. The Class A/B RA150 sound very crisp and have a damping factor of 200. Dec 11, 2023 · ZA3 Review. So for $40 more with the ZA3 you get balanced inputs, a sub out, quasi-mono mode, a more attractive case with better cooling, and a 12v trigger in. Trying to get Streaming and CD player to the ZA3's with remote volume control. Please confirm which channel‘s op-amp needs replacement； 2. I am testing the A07 with 2 different power supplies. I'm running 2 ZA3s in mono mode and would like to swap out the op amps. (It doesn't matter if people say there is no point, I would still do it). 11/. nopiano. We proudly say that every customer is a co-designer behind this amplifier. www. Kickstarter puts the Stereo 4 Ohm Output as 180w X2 @1%, and the Mono as 240 X1. Fosi Audio ZA3 Amplifier Review. amirm; Feb 10, 2024; Stereo and Multichannel Feb 2, 2024 · Feb 2, 2024. #59. The bass and midrange is richer sounding while the treble is a little less bright. Additinal improvement is there, but more tricky. c) it has a poor XLR implementation. NJR Corporation MUSES01 IC. Prepare your audio source device, the ZA3 amplifier, a 24V-48V power adapter, passive speakers, speaker cables (with banana plugs or bare wires), and RCA or XLR audio cables; 2. Completely subjective two-cent perception here, but when I changed my ZA3 opamps to the Sparkos', my first impression was that these play quieter than the TI's. I don't even remember if it ever did, but it works fantastically nonetheless. #23. 5mm (0. If I connect preout cabel to subwoofer amp still distortion exists. My plan is to leave it on overnight and keep it in stock configuration through Friday evening, then install the Burr Brown OPA 2135PA op-amps and repeat the process. ago. Feeding the source direct to it sounds a bit dry and with diminished dynamics to my ears but a tube preamp really makes it blossom. It was sent to me by the company and costs US $149. . If you have any questions or concerns, please don't hesitate to contact Dec 20, 2023 · Jan 26, 2024. 80 each if buying new. Engineered for the audiophile who needs flexibility, the Fosi ZA3 amplifier boasts dual-mode capability—offering both stereo and mono outputs for diverse audio setups. #353. I will include the original stock Op Amps as well. Oct 10, 2023 · When switching, you can hear the operating sound of the relay, but there is no pop noise that I was worried about. Well, I have a Fosi v3 on the slow boat, so I can't comment specifically on that one. It's harmless and allows use of a passive sub driven by a separate amp that doesn't have its own low-pass filter -- e. Oct 10, 2023 · When Fosi, Aiyima, and others return to revising their "all in one" integrated designs with Bluetooth and 2. However, I have done a little OpAmp rolling on my Aiyima A07. 4mm X 14. The product comes in a black and completely metallic case, with a veryminimal control panel, which includes: Volume knob with integrated pressure ON/OFF system. Jimi Floyd said: I can't understand the filtered sub out. In this review, we will get into the details of the new Fosi Audio ZA3 Amplifier - the latest TPA3255 amplifier Fosi Audio. RCA Input. Includes a 32V 5A (160W) power supply by default , which means you won't be getting the full (and very inflated) 600W advertised power, however an upgraded 48V 5A (240W) power supply is also available for about $15 more. MAX Power Output up to 600Watts. Feb 18, 2024. This refinement extended into the midrange, creating a more spacious and cleaner backdrop Nov 18, 2023 · For those who want to do just that, it is difficult selecting which op amps to “roll with”. System 1 (house) = CD player in to SMSL D6-S via RCA Coax AND Wiim Mini connected to SMSL D6-S via Optical Cable (Toslink). XLR Input. com "Fosi is a great little amp that can put many multiple thousand $$$ to real shame. And yes you are correct, you just connect the Lt and Rt cables from your source to only the Rt inputs on each amp. Removing four 2mm hex screws (two on the back panel, two underneath), prying off the volume knob with a plastic cooking spatula, and loosening the 10mm nut gives you access to the internals, which construction shows are miles and miles better than a Dayton Audio DTA-100a I have from over a decade ago. I have a pair of Sparkos SS3602. Dec 31, 2023. Everything seems more balanced across the frequency range. My personal OP amp preference for the Fosi V3 are Ti OPA1656 but others have different preferences. I haven't had the opportunity to test v7 classic in my ZA3 mono setup, so I can't comment on that The ZA3 stocks five swappable op-amps for left and right channel outputs, balanced input, and subwoofer output. 99 with 48 volt power supply. We listen intently, record diligently, and develop with dedication, ultimately striving to transform your suggestions and ideas into reality—the V3 mono. Perhaps the first move is to drop in a chip from the same series but with a higher specification, and, as suggested in other threads elsewhere, purchased from Mouser or Digi-Key. -Ed. Mar 29, 2024 · Ultimately, I would use one (1) 48v/10a power supply per amp AND upgrade the 48v/5a power supply for my ZA3 as well. Feb 10, 2024 · Yes the V3 is cheaper. I just purchased the Fosi BT20A Pro (48V version) to replace a traditional AB amplifier which had been driving two pairs of remote speakers - the built-in units in our kitchen and another pair out on our deck (two pairs, total, both rated at 8 ohms nominal). #381. As of this writeup, the MSRP is approximately $150 After the CheapAudioMan praised the Aiyima A07 MAX as being better than the Fosi V3 he hinted that Fosi has something new coming. If using RCA input, one needs to upgrade THREE op-amps per mono. 4 = -7. Sep 29, 2023 · Verdict. 99 with a 48v power supply. audiophonics. You can do the same with the XLR-to-RCA switch, It can be mounted on the left of the XLR input near the left edge of the chassis. The ZA3 arrives in a larger package compared to other Fosi amplifiers. Jan 1, 2024 · The Fosi ZA3, in stock form, does not cast as deep a holographic soundstage as the other amplifiers, nor does it equal the articulation of the Pass DIY amp. In conclusion, the Sparkos SS3602 dual discrete op-amps proved to be a transformative upgrade to the audio experience. Dec 20, 2023 · Internally the ZA3 is as nicely built as it is externally with the opportunity to swap out the NE5532 op-amp’s for tweaking the sound. de and as stated on their website, it arrived without a power supply. The five Op-amps chips in the ZA3 serve distinct purposes: L-OPAMP: Amplify the left input signal. From the balanced XLR input to the support for mono mode, every feature of ZA3 is crafted to meet audiophiles' most authentic audio experience. By The Cheap Audio Man on Youtube. I'm using the optical output of the Wiim. #1. Op-Amp: TI NE5532 x2. Can I just change the right sides (R-OPAMP socket) on each ZA3 or do I need to change both left and right on each ZA3? 1. Measuring 12. Nov 15, 2023 · i haven't tried any other op amps, except the stock op amps that came w/it. It seems that a v3 of a couple of ZA3 should still deliver plenty of power for 🛒Get the【Replaceable Op Amp For The BT20A PRO And V3 】atFosi Audio Shop: https://bit. I'm weighing options for which new amplifier (s) to purchase. But I think the hiss comes at that end of the chain with the Fosi amp. e. 8dB and at 20kHz it's -3. Whether enhancing the soundstage of your vinyl collection or powering a home cinema, the ZA3's innovative features, including its rich connectivity options and audiophile-grade Apr 24, 2024 · Unlike previous Fosi Audio Amplifiers that included ‘monoblock’ options like the Fosi Audio ZA3 (and the similar Aiyima A07 MAX) the V3 Mono is a pure monoblock, power amplifier. TedBaker said: I have the volume at about 60% on the Wiim / PC. Obviously the latter would have more power and is technically superior. Burr Brown OPA2134. 5dB. i received everything on 5 feb; ran them for a few days, and i was delighted w/what i heard. to fine-tune your sound to perfection. Full-Body Cooling Design. If I don't connect pre out to sub woofer amp distortion exists. which can be used in mono mode paired with another, or in classic stereo mode. Feb 10, 2024 · That's the general impression on Fosi's FB page. In effect mirroring how a pair of rca's would be connected. Feb 10, 2024 · I just added a pair of the ZA3 to drive the woofers of my LaScala-derived, custom speakers. hg np tv fv kb bx tm tr pl ba