2 which I bought last month. The added cost would be even less if using the so called "differentiating postfilter" (which is just a single 100pF capacitor that connects loudspeaker out to audio in, as described in the post "TPA3255 oscillation issues" at diyaudio. The budget option is Fosi v3 or ZA3. 32dB in stereo setting and 31. com). Use a mono RCA cable (not included) to connect the SUB output on your amp to the LFE input or L&R inputs on the subwoofer. Fosi likely buys their op amps in bulk. Jan 7, 2024 · Mar 22, 2024. •Amp Chip: Texas Instrument TPA3255. The amplifier has really dressed up from its earlier origins of common enclosures in budget class amplifiers. 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. Using smart plugs, it provided the measurement of the power consumption of the amplifiers. Only two inputs- LOL what a joke. By all accounts I’ve read they offer a fairly priced quality product. The reason I keep using “potentially” is explained in my previous post #366 in this thread. I have two ZA3s that I run in mono mode, and a P3 which also outputs to a subwoofer. May 9, 2024 · Fosi Audio said: This is a follow-up on the 48V/10A power supply. Fosi Team. Oct 10, 2023 · Nov 27, 2023. in Feb 10, 2024 · You can buy 2 for only a few dollars more than the za3. Dirac Live with Bass Control (active crossover L+R+2Subs) Feb 10, 2024 · 33. Connect the RCA (XLR) cables to the right-channel RCA (XLR) input ports Jun 28, 2024 · So for the review itself, well before I get to the MC351, I want to mention the excellent level of communications from the Fosi Audio staff that I’ve dealt with. Using a dB meter, I wanted to compare volume variance between the two amps, XLR and RCA inputs and a couple pairs speakers but found something unexpected (to me anyway). If compared with Yamaha the sound is very detailed, involving, crispy, and crystal clear. Fosi Audio ZA3 Connections. How to replace op-amps on Fosi Audio ZA3? How to set up a 2. New posts Search and user experiences about Fosi Audio products. 5dB allowing him to keep the volume control lower on his preamp. Feb 10, 2020 · Greetings! We're happy to share with ASR members that our first dual-mode balanced amplifier ZA3 is about to be released! Here are some details about this amp. fr. I ran and reran the test multiple times, same results on both amps. The prototypes were also probably put through environmental testing, both hot and cold extremes. Input Interface: 3. In stereo mode, it delivers a robust output of up to 155W, while in mono mode, the power soars to a maximum of 235W. In mono mode at 100w, you get -78dB SINAD. ”. BRAND STORY. Noticed that my speakers supports it, now I'm wondering if I could buy a pair of bi-wire speaker cables Dec 22, 2023 · No argument on some of the demerits listed for the Fosi Audio ZA3. Here's the relevant section in the user manual: View attachment 332074. Rated Output Power: 310mW@32Ω×5. The one Fosi Audio ZA3 wouldn't be enough for both channels since it can only output 140w combined @ 4 ohms. No tone defeat. 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. Aug 25, 2023 · This small Fosi Audio ZA3 integrated amplifier has the particularity of being able to operate in both stereo and mono mode. 99 with 48 volt power supply. Contract manufacturers are supposed to build to a spec provided and the customer is supposed to make sure their requirements are being met. The Fosi Audio ZA3 is an impressive amplifier, offering high-quality sound, versatile features, and efficient operation. Oct 10, 2023 · That maty is me and, as the great Spanish philosopher Ortega y Gasset would say, my circumstances. In fact through the entire power range, right up until 200w, mono mode has a much more stable and better SINAD. 0 B6. Feb 10, 2024 · For example, at 100w of output, stereo mode has -74dB SINAD. In practical, use these two improvements don't make a huge difference in SQ at typical listening volumes. Location. It was sent to me by the company and costs US $149. All of these things (except remote) were standard on ~USD$100 integrated amplifiers in the 70s/80s/90s and into the 2000s. Yamaha, most likely, will be here 20 years from now. I have the 48v power supply. Oct 10, 2023 · 1. Dec 20, 2023 · The ZA3 is a testament to Fosi Audio's commitment to audiophile-grade sound quality and customer-centric design. From bass to treble, the sound was good too but a little harsh in the treble on some recordings. BUT, what I have discovered is that the intended function works perfectly ONLY when the 3. But that should not matter. Recommended Headphone Impedance: 16Ω-300Ω. 5mm Headphone Out×5. SUB-OPAMP2: Amplify the sub signal. fosiaudio. This power supply can indeed operate stably at a 10A current. Dec 18, 2023 · Forums. 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. jmwant. This next-generation amplifier features a balanced dual-mode Class-D framework, making it a versatile choice for both stereo and mono audio setups. Feb 10, 2024 · Currently, my setup consists of two Burson Audio V7 Classic opamps with one ZA3 amp. The V7 Classic adds. Jan 18, 2024 · The two signals from the XLR cable are fed into the two inputs of a differential amplifier. In my second audio system, the cheap one, connected to a PC with W10 optimized for multimedia (minimization of the jitter created in the CPU), I listen to the music with my modified KEF Q100 5. If you have any questions or concerns, please don't hesitate to contact support@fosiaudio. Feb 18, 2024. The resulting change in sound is remarkable. #1. The system I bought it for runs JBL Stage A190, WiiM Pro streamer, Fluance RT85 Oct 30, 2023 · In home use, with short cables connecting source to amp, there will almost never be an audible noise benefit from balanced inputs. Analogue Audio Inputs RCA: 1x pair : Europe's busiest forums, with independent news and expert reviews, for TVs, Home Cinema, Hi-Fi Jan 23, 2024 · So couple of months back I scored the ZA3, run in monoblocks with 48V bricks. Here's the proposed setup: WiiM Pro Plus Streamer £219. Dec 31, 2023 · New member. Everything has been really well explained and all of my questions have been answered extremely well and incredibly fast compared to most companies. OP. Last edited: Feb 23, 2024. I get the hiss when I turn the Fosi amp to maximum. Feb 8, 2024 · Twin Cities, Minnesota. It looks like the price per Muses02 op amp on Profusion's website drops to May 26, 2024 · Updated. Nov 18, 2023. #20. Dec 31, 2023. Jan 25, 2024 · review. 0-channel system using two Oct 10, 2023 · Fosi Audio's First Dual-Mode Balanced Amplifier ZA3. The gain is also higher in mono mode by 1. Like x 4. All this happens as some TPA3255 boards start to measure really well here at ASR (for instance: 3e audio TPA3255 260-2-29A). Then the output wattages from Fosi would be extremely competitive , especially against the Hypex based D-class amps that many on this forum compare your May 26, 2024 · SUB OUT to powered subwoofer. I'm weighing options for which new amplifier (s) to purchase. audiosciencereview. It seems to me that the two main differences between the ZA3 and V3 Mono is PFFB and the V3 Mono is a true mono-block design. Dec 22, 2023 · You assume Fosi will still be around years from now. Since this amp shipped in the second production run, it came in last week. watching the virtualhifi video "The Shocking Truth About The Fosi Za3 $200 Amp: Prepare To Be Amazed! 4k Sound Test", the reviewer, (who is part of the design team for cube audio and qualio speakers), while raving about the za3, also mentions the precursor to the a07 max - the a07; and he finds both worthy. Click to expand That cheapaudioman guy said he liked the WiiM amp for what it delivered for the price, but he could hear differences between that and his inexpensive wiim-mini/some DAC/Z3 amp streamer combo. It supports XLR balanced input, offering strong interference resistance and effective noise reduction capabilities. It was really refreshing. Shipping calculated at checkout. With your feedback we will be able to improve and innovate the Fosi Audio product line. I was lucky to receive my ZA3 early via their Kickstarter Jun 30, 2022 · Hi all - I've got a pair of ZA3 amps from Fosi that I picked up from their kickstarter campaign. doug s. It would be great if your next amplifier using the TPA3255 would also use a 52V power supply, similar to the Topping PA7 Plus. Dec 20, 2023 · thanks for your little comparison. Q Acoustics 3030i Speakers (on their stands) £249 (+£165) That's £793 sans cabling. The original sound was lively/dynamic and the soundstage was well balanced. SMSL-D6-S then feeds ZA3 via short XLR cables. Open to 15 Lucky Testers. This works really well and sounds great, however, the mains are playing at full range, as is the Buckeye amp driving them. 48V Fosi Audio ZA3 Amp (just one) £150. #243. Dec 20, 2023 · One Muses02 sells for £24. Share. The link to their Website below explains how to replace the op amps. Already bought a pair of regular speaker cables/wires but then I came across the topic of biwiring/bi-wiring. $7. Now, I LOVE my Marantz 2240B. which can be used in mono mode paired with another, or in classic stereo mode. Mac mini --> Dirac Live --> Peachtree Audio 'Carina' integrated amplifier --> Revel F206. You set the volume control on your external amplifier to a certain position. In contrast, the ZA3 consumes less than 1W in standby mode. Now Fosi announced the V3 monoblocks with PFFB. •Mode: Stereo, Mono •Input: RCA, XLR •Output: Speaker Out, Sub Out •Amp Chip: Texas Instrument TPA3255 •SINAD: 88dB •SNR Feb 10, 2024 · This is a review and detailed measurements of the Fosi Audio ZA3 stereo amplifier with balanced XLR inputs. Fosi Audio 2-Pack of Nylon Braided Hi-Fi Speaker Cable Wire with Gold-Plated Banana Tip Plugs - 5. II's SMSL DL200 -> Antique Sound Lab MG-Head OTL Mark III -> DT 880 - 600 ohm / DT 990 - 600 ohm Jan 26, 2024 · Audio amplifier device review: Fosi Audio ZA3 This is the second review I have written relating to a product from the FOSI brand, the first was relating to Search Everywhere Threads This forum This thread Feb 10, 2024 · With the ZA3 in stereo mode (26dB gain), the gain knob at max, and your Gustard at max volume in low gain mode, you would be asking the ZA3 to output 37. With its advanced high-efficiency heat dissipation design, the ZA3 ensures long Feb 10, 2024 · The RCA out goes to a 12" sub with the cross over set at 65Hz. 1 month ago. Apr 6, 2023 · Feb 2, 2024. About Fosi Audio Electronics Technology Co. •Mode: Stereo, Mono •Input: RCA, XLR •Output: Speaker Out, Sub Out •Amp Chip: Texas Instrument TPA3255 •SINAD: 88dB •SNR: ≥106dB www. I restored it myself (new caps, transistors, etc) and have enjoyed it for a while but was really curious if more power and the amp would make much of a difference. Jan 23, 2024 · Jan 23, 2024. 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. 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. If you have any questions or concerns, please don't hesitate to contact Feb 10, 2024 · SMSL DL200 -> Fosi Audio ZA3 -> ELAC Debut 2. It was sent to me by the company and costs US $89. Forums; Blog; Submit a request; Fosi Audio Support; Tutorial Video; ZA3; ZA3. The V3 Mono consumes around 4W in standby mode in an AC110V environment, higher than the 3W reported by Fosi in AC220V testing. 99 USD. Also, to me the ZA3 with Sparkos' appear to draw a soundstage with more depth than with the stock opamps. My house system is doing that well. 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? 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. 25 coaxial via the Magnat MA 900 hybrid integrated (modified three weeks ago, like almost all the audio 1. 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. Oct 10, 2023 · Greetings! We're happy to share with ASR members that our first dual-mode balanced amplifier ZA3 is about to be released! Here are some details about this amp. Switch the input to RCA (XLR) mode and the output to mono. 5mm end is only *PARTIALLY* inserted into the 12v trigger input of the Fosi ZA3 amp^^ (picture below). Trying to get Streaming and CD player to the ZA3's with remote volume control. 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. 11/. No processor loops. 1 of 2 Go to page. Use a mono RCA cable (not included) to connect the SUB output on Oct 10, 2023 · For me, za3 is only interesting because it has 12v trigger. www. Whether the WiiM Amp can high-pass the speaker out without affecting the sub out, I don't know. Greetings! We're happy to share with ASR members that our first dual-mode balanced amplifier ZA3 is about to be released! Here are some details about this amp. The more expensive option would be an Ncore/NcoreX/Purifi amp (from Buckeye). A sugestion at @ Fosi Audio: Mar 15, 2024 · Ordered second wave, Jan. Also high pass and low pass would sum flat only if subwoofer and main speakers are time aligned, or phase is also adjustable. 2)play a full spectrum sine wave sweep, on loop. The tone and timbre are good with the Fosi, but the other amps are better. 2. Obviously the latter would have more power and is technically superior. I think because better performance in SINAD and ZA3 has sub crossover out of the box. I particularly like a wide and tall, detailed soundstage. while this refers to the FOSI ZA3 audio amplifier, with integrated TPA3255 high-end Class-D amp. Courting green audio aficionados and perhaps some seasoned folks, the Fosi Audio ZA3 desktop amp has the allure of affordable yet buzz worthy tech. The ZA3 is a meticulously crafted high-performance balanced power amplifier designed with users' needs deep in mind. Profusion's price for a pair converts to $62USD which isn't far off from Fosi's price of $52USD for a pair. After reading the earlier posts, I went in and took out the unused opamps, leaving only a Sparkos SS3602 in the R outputs. 8M Each. Oct 10, 2023 · Based on the values published at the Fosi site, Fosi ZA3 amplifier will be a worse amplifier than the Fosi V3. Banana Plugs 2Pairs/ 4 pcs, 24K Gold Plated Dual Screws Jack Connectors for Amplifier, Speakers, Receiver. Feb 10, 2024 · As for $100 "entry-level" integrated amps from back in the day, IIRC they were pretty much crap -- just good enough to avoid staining the reputations of their makers and way short in power and S/N compared to today's sub-$100 TPA3255 chip amps. For those who want to do just that, it is difficult selecting which op amps to “roll with”. •Output: Speaker Out, Sub Out. Experience the V3 MONO, ZA3, and LC30. Apr 24, 2024 · The case design they used with the V3 has been replicated with the ZA3 and V3 Mono. The op-amp amplifies the difference between the two signals, while rejecting any common-mode signals that are present in both inputs. Based on the TPA3255 datasheet, I speculate that Fosi ZA3 uses mono BTL configuration, not PBTL. On 35 it's crazy loud. Next Amplifier Fosi Audio ZA3 Balanced Stereo/Mono Feb 10, 2024 · You could make the hi-pass adjustable, a bit less simple, from 0hz to, say, 150hz, which should handle pretty much anything, from no hi-pass crossover to 150hz; either continuous, or 4-6 different set frequencies. View attachment 348770 The amplifier has really dressed up from its earlier origins of common enclosures in budget class amplifiers. Kickstarter puts the Stereo 4 Ohm Output as 180w X2 @1%, and the Mono as 240 X1. Another member of this forum requested help with installing a pair of MUSES02 op amps into a Fosi Audio ZA3 amp he ordered over a month ago. It’s $109. Updated. It seems that a v3 of a couple of ZA3 should still deliver plenty of power for Whether for professional production, educational settings, or home use, the PH05 offers an ideal solution for audio-sharing experiences. Seattle Area. The Fosi Audio ZA3 has a little more heft to it than similarly-priced Topping PA3s amplifier. Oct 10, 2023 · Dual-Mode Innovation: This new generation mini amplifier offers both stereo and mono modes, and adapts flexibly to your diverse needs, allowing seamless mode switching. Jun 20, 2023. •SINAD: 88dB. nopiano. It’s potentially 20-30watts more power measured at 1%thd. •Mode: Stereo, Mono. In my first review for AudioKarma (of many I hope), I will get into the details of the new Fosi Audio ZA3 Amplifier which has just been released. #381. This is yet another demonstration of how a more premium casing and a higher quality aesthetic perception affects the perception of sound. 99 with the 48 volt supply. They have built an arsenal of small but mighty desktop power amplifier solutions, from 2 channel, 3 channel and now a select-able two channel/monoblock built around the Texas Oct 10, 2023 · You can see it from the image, the volume control on the Fosi is on 75% position (using as a power amp), and on Burson it's just 27 (out of 100, but vol level 60 gives full 2vrms power, so 27 out of 60) and it's already loud. Last edited: Dec 12, 2023. No remote control. Apr 24, 2024 · I would be surprised if the V3Mono was radically different. If I was you I would keep the Gustard in low gain mode, keep the ZA3 in stereo with the gain knob at max (26dB), and never go full Dec 20, 2023 · The ZA3 represents tremendous value for money and has some outstanding features like support for subwoofer, trigger input for the price, coupled with a really nice design and excellent measurements this is a top pragmatic choice. But I think the hiss comes at that end of the chain with the Fosi amp. audiophonics. Let's Test Together. If there is anything else similar with trigger support, let me know. Go. Oct 10, 2023 · @Fosi Audio Audio thanks for your exciting update regarding PFFB. 99 with stock 32 volt supply. 3)slowly turn up the volume on the source/preamp/DAC to about 90%, leave the last 10% as headroom. 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. 9ft/1. The Topping PA5 II and the Fosi Audio ZA3 have 12 volt trigger inputs. May 25, 2024 · I was trying a comparison between my Fosi Audio ZA3 and SMSL AO200 amps combined with a SMSL DO300 DAC and Totem Skylight speakers. No signal routing options. I feel shortchanged and/or buyer's remorse ( probably a bit of both and may be unjustifiably ) Can someone add fuel to the fire or probably extinguish the anguish May 26, 2024 · How to set up a system using two ZA3 units in mono mode? Connect the RCA (XLR) cables to the right-channel RCA (XLR) input ports of the two ZA3 units, and link the speaker wires to the right-channel binding posts. Apr 1, 2024 · Fosi Audio ZA3 Amplifier Review. Add to Cart. The brand name Fosi Audio is composed of Fi (fidelity from HiFi) and iO Nov 15, 2023 · Bought Fosi ZA3 for the trigger but I would still need to turn on my SU1 manually anyway. 5mm end of the cable is also *fully* inserted to the Fosi ZA3 12v Trigger Input. Price goes up to $109. Fosi Audio Product User Instruction ZA3 Dec 18, 2023 · The Fosi Audio ZA3 is an impressive amplifier, offering high-quality sound, versatile features, and efficient operation. In the review of the Fosi V3 (Fosi Audio V3 Amplifier Review ), Amir wrote “There are replaceable op-amps for those of you who have nothing better to do than mess with the design. This is the latest TPA3255 amplifier from Fosi Audio and follows on from the amazing V3. Tax included. Feb 10, 2024 · I just ran some tests on two different ZA3's (my broken one with the broken right RCA in, and the replacement one) and with 1v in at 1Khz test tone, I get 29. Oct 10, 2023 · FOSI AUDIO ZA3 Stereo / Mono Amplifier. R-OPAMP: Amplify the right input signal. This is a review and detailed measurements of the Fosi Audio V3 stereo amplifier. Jun 10, 2024 · On my Fosi ZA3 amp, I changed two original Dual Opamps (1 per channel) for a Burson Dual Opamp V7 Classic Kit. 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. Dec 24, 2023 · The 3. Obviously the ZA3 cant do that. #353. Very likely. View attachment 364691 Feb 10, 2024 · This is a review and detailed measurements of the Fosi Audio ZA3 stereo amplifier with balanced XLR inputs. , Ltd. Feb 10, 2024 · Mar 7, 2024. Jun 20, 2023 · 246,248. Hope this helps! Za3 does 140@4 ohm on 2 channels not combined. So, two ZA3 in Mono will output less than 2dB higher volume than one ZA3/V3 in stereo. Apr 24, 2024 · OldJBL said: I would bet that Fosi is using a different factory to manufacture the ZA3 than it does for the V3 and V3 Mono. The output of the op-amp is the summed signal with the interference canceled out. Good Day All, I'm about to receive my ZA3 (1 unit) to drive the Wharfedale Diamond 12. Noise & ripple test also included. Feb 10, 2024 · Yes the V3 is cheaper. Feb 7, 2024 · It'll be used for a mix of music and video (no vinyl and no CDs). Feb 10, 2024 · Personally, I do it the other way around like how we tune and setup car audio back in the days: 1)set the gain on amplifier to the lowest level in the beginning. When in this configuration, the trigger on/off simply does not work. 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. Feb 10, 2024 · No loudness. Banana plugs make speaker wire installation a breeze and are great to use with A/V receivers, amplifiers, surround sound systems, banana wall plates May 11, 2024 · Since you need at least 130w per speaker, only two Aiyima A07 Max amps could work here because each one can handle up to 166w @ 4 ohms. There is a $10 discount coupon right now. It replaced a (still working) Topping PA5. I've been using a ZA3 for all of 5 hours, to date, in a secondary location where critical listening isn't practical. Jan 18, 2024 · I'll chime in on removing unused opamps. . 3 reviews. I'd also recommend 24db/octave slope. Apr 1, 2024 · But this isn't as automated as I'd like. Both the Fosi V3 and the Aiyima 07Max (and Oct 31, 2023 · With the Pro Plus and Fosi V3, you'd ideally do: WiiM->KC62->Fosi V3->LS50 Meta. Apr 1, 2024 · Kayshot said: -The gain on my external amp was set to 55, with the max being 60 (I assume 60 is 0dB) -Since the mono V3 has no gain controls. This is a review and detailed measurements of the Fosi Audio ZA3 stereo amplifier with balanced XLR inputs. 5mmAUX ; Output Interface: 3. Jan 1, 2024 · The Fosi Audio ZA3, like their V3 Class D amp, has 5 sockets for plug-and-play op amp installation. The red plug represents the right channel, while the white plug Dec 22, 2023 · The WiiM Pro and WiiM Pro Plus audiio streamers have a 12 volt trigger output that can power up a Topping PA5 II Plus. From an audio point of view, the two products are exactly equivalent, with a minimal greater instrumental quality in favor of the V3. That way, you can utilize the KC62's built-in LPF+HPF to properly cross over the sub and mains. . I believe Fosi Audio are preparing a separate Pre-amp 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. 9v which at 4ohms is 360w. •Input: RCA, XLR. So, it requires a pre-amp for Volume control, and you need 2 x V3 Mono’s for stereo, one for each speaker. SUB-OPAMP1: Handle low pass crossover (20-300hz) XLR-OPAMP: Amplify the XLR input signal. 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 Feb 10, 2024 · 139. Oct 10, 2023 · The A07Max measurements suggest that it potentially has more power output than the ZA3 when in PBTL mono mode. This small Fosi Audio ZA3 integrated amplifier has the particularity of being able to operate in both stereo and mono mode. A. This also explains why ZA3's mono mode uses the right channel instead of L+ and R+. 99 on Fosi’s website and Amazon, but that’s with a 32v power supply. Here is the description: When I connect either amp to a source (I've tried both RCA Jan 13, 2024 · FOSI AUDIO ZA3 Stereo / Mono Amplifier. Aug 3, 2019 · 68. I have a pair of Sparkos SS3602. 99 with a 48v power supply. Unlike the A07 Max, which explicitly states that it uses PBTL mono mode, Fosi ZA3's introduction does not mention PBTL at all. com. MacBook Pro -> Topping DM7 8-Channel DAC Balanced -> Hypex NC252MP (Buckey AMP) Kef R11 with 2xSubs. I'm running 2 ZA3s in mono mode and would like to swap out the op amps. Dec 11, 2023 · Summary . That very well may be. However, it’s not double the power, or anything like that. Feb 6, 2024 · Fosi Audio ZA3 - Initial Review. The five Op-amps chips in the ZA3 serve distinct purposes: L-OPAMP: Amplify the left input signal. Unfortunately, the RCA cap fell off the other ZA3 amp, and I'm still working with Fosi support, which has been disappointingly slow (one email per day). 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). 18th and received first week in March. Installing the op amps was a breeze and the amplifier is working very nicely. $29. View attachment 348770. Join Fosi Audio’s product tester program and let us know what you think about our products. The amplifier has really dressed up from its earlier origins of common enclosures in budget class Feb 10, 2020 · We know that both A07 max and ZA3 have input sensitivity lower than 1V (ZA3 is probably around 0. Jan 1, 2024 · As with anything in audio, better technical design and execution wins out. But both the PC and Wiim have separate level output controls so they not. If those features are useful Feb 10, 2024 · That's the general impression on Fosi's FB page. 87 on Profusion's website who is listed as an on-line distributor on the manufacturer's website. Feb 10, 2024 · This is a review and detailed measurements of the Fosi Audio ZA3 stereo amplifier with balanced XLR inputs. This likely means that the V3's case design is effective in regard to heat dissipation. Of course there are no guarantees of that either. 26dB in mono setting. Aug 10, 2023 · We're happy to share with ASR members that our first dual-mode balanced amplifier ZA3 is about to be released! Here are some details about this amp. Oct 10, 2023 · Fosi Audio ZA3 Balanced Dual-Mode Class-D Amplifier. 2 / SUB1010 SMSL D0100 Pro -> Hagerman Baritone Tube Buffer -> Schiit Saga S -> Kenwood Trio L-05M mono blocks x 4 -> Vandersteen 2Ce Sig. No phono stage. i mean no disrespect to the company, they could be the next Apple for all anyone knows. Mar 13, 2024. The added cost for the TI PFFB would be 15€ more, not 3-4 times more. No muting. TedBaker said: I have the volume at about 60% on the Wiim / PC. Mar 11, 2024 · INTRODUCTION. Fosi Audio was established in 2017 and has experience in researching and developing countless HiFi home audio amplifiers of different types, and sell Fosi Aido branded products through sales agents worldwide. I'm using the optical output of the Wiim. #165. 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. You obviously confused the gain control with the volume control. The majority would be used as monoblocks in our children's rooms, our bedroom, my office etc, and I wanted to possibly use a few for our home theater setup to compare to other amps. Both amps function properly in stereo mode. 1; 2; Next. It incorporates two TI TPA3255 amplifier chips enabling it to deliver up to 2x150W or 1x240W @ 4Ω. Dec 12, 2023 · The Fosi Audio ZA3 is an impressive amplifier, offering high-quality sound, versatile features, and efficient operation. 7V based in info from Audiophonics, if I remember correctly), if the DAC/pre-amp could be fixed closer to input sensitivity of the amplifier then amplifier volume could be maxed out completely eliminating potentiometer getting in play. Insert the RCA or XLR audio cables into the corresponding left and right channels on the ZA3. I'm seeing a strange issue when I use them in mono mode, however. gs av iq ea ks mm dk rp za no