Fosi Audio ZA3 Balanced Stereo Amplifier Home Audio Component Mini 2 Channel Mono Amp TPA3255 for Subwoofer Desktop Home Theater Bookshelf Tower Floorstanding Passive Speakers with 48V Power Supply

where to begin! My previous setup was Marantz PM6007 with WiiM Ultra & Elipson Planet L Speakers. I was ok with the setup but I knew, was missing something on the higher frequencies & details. just heard about this product on youtube channel "VirtualHiFi" - found many good videos with sound test comparing with 10k - 15k USD costing amps. I took the decision & bought this today with 48V power supply & right now its been playing for 3 hours replacing the marantz PM6007 only with rest of the same setup. I have no words to say - Man! it's blown away the marantz right out of the box and my elipson planet L speakers have come to life. it's a night & day difference. I kept the volume at 75% position & controlling the volume from wiim ultra and it's running cooler now than at 100% position. i am seriously thinking about the reason why it is sounding great than the marantz. Hmm.. may be one reason - the frequency range with 0.1+-DB? I don't know but it's sounding fuller, detailed, airy high-frequencies & analogue kind of texture. ZA3 changed my mind to join in the class D era as I have ordered another now to try as Monoblocks. I am totally happy & the value for money is top of the roof! I really appreciate the FOSI TEAM behind this to design such a great product! Best of luck for your next musical invention!!! Got the second one & set them as monoblocks - sound stage is wider now & details are more cleaner especially the vocals & mid range. I started enjoying my setup now with peace of mind!

Class D is the new normal in audio amplifiers. Output is great. It has enough juice to drive my fyne audio towers. Power supply is bulky, though I feel an LPS or GaN power supply will boost the quality more.

Sound quality is just superb, sound stage is wide and very natural without colouration, used with SMSL dac so quality was amazing , 48V PSU is enough for normal rooms , used RCA but will be using with XLR for balanced connection would definitely improve sound quality, overall very satisfied

Okay Good but treble over best only smsl suv1 bluetooth super

Great sounding Amp. I've upgraded the OPAMP and used 2 of these in mono mode. Its performance is now comparable to more expensive power amps

What a amazing sound quality with tower speaker and pure bass with active subwoofer

Really Good amp. Xlr and rca both work well, if you have the option use the xlr input.

I purchased the za3 to power a pair of surround speakers in my HT rig. To test the za3, I connected it to a pair of older Polk RTiA1, Anthem avm70, and Sony SACD player. I chose Rickie Lee Jones Pirates SCAD to demo the Fosi. The sound was very impressive from the start and only got better as the amp continued to play. It barely got warm and the speakers were completely quiet when no source material playing and the Fosi volume set to max. Impressive! I connected the Fosi to surrounds, re-ran the sound calibration, and, again, the Fosi did not disappoint. This little amp proves that spending big dollars isn't always needed. The Fosi has a 12 volt trigger. Sadly, I did not have mono cable on hand with a male 3.5 mm connector on each end. The cable I had was stereo with 3.5 mm male on one end and 2.5 mm male on the other. Through a bit of simple improvisation, I spliced the 3.5 mm connector to a 12 volt DC power adapter, connected both the Fosi and power adapter to the same power bar. Now, turning on the power bar powers on the Fosi.

48v 5A adaptörü takıp kendi dahili dac.ı rca ile denedim evet ilgi çekiciydi fakat standart bi d -classtı. Daha sonra 3 adet muses02 opamp sipariş verdim ve elime ulaşıncaya kadar amfinin yanmasını bekledim. Nihayet geldi opampları değiştirdim ve sub opampı devre dışı bıraktım(kullanmadığım için) vee Xlr (cardas golden cross) ları bağlayınca vaaay müthiş ses!! Birçok pahalı amfiyi sınıfta bırakır çok net!! Opamp yükseltmesi yapıp güzel bir Xlr ile kullanınız şaşırcaksınız....

Klinkt echt prima. Aanrader. Werd ook tijdens een hittegolf nauwelijks warm.

El Fosi ZA3 es un amplificador bastante económico con mucha potencia. No altera el sonido y reproduce exactamente la calidad de la fuente/DAC. No se aprecia distorsión y el balance es bueno. Muy importante la capacidad de usarlo como Monoblock si se implementan dos unidades. Pros: - Rendimiento/Precio imbatible. - Potencia de sobras y capacidad de hacer monoblock con 2 unidades. - Conexiones traseras, RCA - XLR - SUB Out. - Facilidad de uso y conexión. - Unidad con un tamaño perfecto, no aparenta tener la potencia que tiene por el tamaño. Contras: - Podría ser más sencillo de encender y apagar. - Petaca de alimentación de 48V bastante voluminosa (Entendible).

This amp is a replacement for my fried Topping PA3. At first I connected it via minijack to RCA on my laptop and was very disappointed. Sound was flat and I had to put the volume to 40% to have a decent volume. I tried connecting it to different speakers and sources. I was really wondering what the hype was about and almost decided to send it back. I even wrote a bad review. But never posted it. :) After a day or 2 I had the idea to try minijack to XLR. And OMG what a difference. The little amp just opened up. Volume ok. Rich beautifull sound. I was blown away. I don’t know if it’s my unit that is faulty or if it’s just the way it works. So now I’m happily recommending it.