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

These small class D amps are exceptional value for money! I have amps that cost 20 times more than the ZA3 but does not deliver even 5 times the performance. I tried this (just for fun) with my power hungry Sonus Faber Sonnetto I bookshelves and it managed to make them sing beautifully up to the max volumes I listen to (70-80 db). I use two of them in mono mode to power my desktop speakers mainly for nearfield listening. The only thing I miss is a high low pass filter for the sub output. This is honestly exceptionally priced HiFi! The performance makes the price a steal! And I am so inclined to build an entire system of Fosi products just to compare its performance to price against my other ridiculously priced higher mid-range systems, which I 'm sure this will give a run for the money! I heard some premium and expensive high-end amps, and this definitely does not compete with them (I mean, come on if you're expecting this!), but for mid-range and other entry level products, I believe this thing is a certified LGK!

What a monster amplifier in a pint sized metal box. Get two & go mono with 250 watts per channel and watch those those tough speakers rise from the dead.. Add some Burson Audio Vivid V7 Op-Amps in it and man this thing becomes a beast with all that 48v d.c power input ! At this price it's crazy how they make it possible to get so much !

Can’t get better than this for the price.

If you’re thinking of trying something new, just go for it. You won’t be disappointed. I bought one ZA3, liked it… got excited… and ordered another one. ( Because why not? I can afford a mono block :) now) I guess I’m the new audiophile on the block now 😎🥃. I’hv got Cambridge, NAD, Marantz paired with KEF ls50 passive older ones , Rp600 m2 , So when I tried two ZA3s, I thought I’d reach that high level niche sound which I dnt know even hw that sounds . You know those YouTube guys brag about. I didn’t reach that level of euphoria or goose bump . Maybe I expected too much, or maybe I still need to tweak a few things here and there. Could be both 😂 Note: I tried it with the ZD3 DAC the Fiio K11 and smsl m300 with xlr connection no loopholes :) boys we do xlr also right . If you’re reading this, you probably have one DAC in that league too. So boys… see you soon at the next audiophile or video files meet 😎🎶📽️ But one thing I can clearly say: One ZA3 in stereo is money well spent.

This is my second ZA3. Now I’ driving both in mono mode with a ZD3. Sounds good!

Thanks

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.

Excellent amp! Lots of power! Greeat sound quality! I love the styling, and even like the volume button being the on off switch, it makes a lovely noise when you turn it off lol... Mine came with a 48v 5a psu, couldnt be happier with this purchase, seems great value!

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.

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.