Help finding DIY community approved quality stereo amp

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#23
I bought some Ice power 200as2 which uses TPA3255. They come with power supply and cable kit which dramatically boosted ease of build / use for multiway speaker project I needed multiple amps for. Nothing to say about sound quality, they have low noise which was my first priority for sound quality. They have been problem free, no obvious issues in the sound or usability or anything, nice experience overall. Not much to solder though, if you look or that.
 
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#25
Hi, I had memory it was on some official source but cannot seem to find it!

Forums have it, trust forums?😀
https://www.diyaudio.com/community/threads/icepower-200as2-vs-100as2-chipset.348826/
https://www.diyaudio.com/community/...s-a-modification-worth-it.380233/post-6881786
https://www.diyaudio.com/community/...nce-design-class-d-amp-gb.340880/post-6177256
https://forum.audiogon.com/discussi...lifier/post?highlight=icepower&postid=2285000
http://www.hifi-forum.de/viewthread-71-11152-50.html

Here is a suspicius writer:
https://www.diyaudio.com/community/...diy-discussion-design-etc.287470/post-6862332

Here is photo showing 3251 on the 100as2 board https://www.audiocircle.com/index.php?topic=152869.msg1640044#msg1640044

Asked about it on a reset thread: https://www.diyaudio.com/community/threads/accidental-short-icepower-200as2.398853/post-7348124
 
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#26
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#28
denbret said:
I participated and will compare it to my Sabaj A20a 2019 (MA12070) and the A30a.

Fosi Audio V3
https://www.kickstarter.com/project...hifi-stereo-audio-amplifier-with-tpa3255-chip

Specs and measures.
https://www.fosiaudio.com/product/2-channel-amplifier/v3/

Regarding the PA3s, do not buy it, my friend owns it and he put it aside, so I could compare it to my amps, quite dull in sound compared to the Sabaj A20a 2019.
Click to expand...
c5692bb6870b00968f63ff773e721e2d_original.jpg

Denbret,
The design almost reminds me of those tiny amps using 3116 and the likes...It's basically a shortened A07, at only 2/3 the length while still maintaining the upgradable opamp sockets. Not to mention the vents.
I'm only worried about the output filtering (?) and the power output.
K.
 
#31
I have just bought 2 Fosi V3 amps from Amazon uk, I feed my Allo Boss Dac (Raspberry PI3/ IFI psu) into them and they are quite amazing. i play FLAC files from NAS and Radio Paradise streams. Anybody who needs a budget power amp should try it, especially if you have 30 days return option.
 
#32
I have tried one of these too, and they sound much better that the BT20A, and are very well build, but I found that i they need a very high input level
to deliver the goods. Much more than some TPA3116 based amps from Breezer that I have bought 4 of. (They sound very good too, but has a slight
coloration in the top end).

I Googled unbalanced standard consumer input level and found the value 316 mV RMS, which is not that much, but some devices don´t deliver much
more, and with 316v RMS in I only got about 9w out from the Fosi V3.

I bought it from Fosi´s AliExpress store and don´t give a s... for their ´unconditional´ return option. If it wasn´t for AliExpress I would still have battled
with Fosi´s so called customer support. They came up with all sorts of request like: Please send us a video that shows that it has a very low output
level .... Send pictures of this and that, a very bad experience. Then AliExpress lost patience and just sent my money back, large respect for that.
 
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