Fosi Audio ZA3 vs Aiyima AO7 Max - same same but different?

Fosi Audio ZA3 and Aiyima AO7 Max have been the most talked about class D affordable amps talked about lately. On paper they look similar. But are they?

Fosi Audio ZA3 on:

Aiyima AO7 Max on:

Video chapters:
00:00 - Intro
01:05 - Similarities
02:01 - Differences
07:33 - Sonic differences

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Nice T-shirt ;) Can't say anything about the Aiyima, but fully agree on the SQ of the Fosi ZA3 (mature, non-clinical sound). Recently I got the V3 mono's and, imo, Fosi is putting our some nice gear. Benefit of the ZA3 is much less heat by a larger chassis, where the smaller form (V3 mono) *really* gets hot.

[Jason]

I just bought Fosi V3 for £104 for the pair on Amazon. Hopefully you will review them soon as I enjoy your way of doing reviews.

[shaolin]

Fosi is a more robust amp. I tested this comparing them pushing tactile transducers where fosi was able to push them higher while the aiyima went into protection at a lower level

[bluerev]

I wonder how the za3 stacks up against the Aiyima a70. Have you tried that one?

[tofffsymagic]

The sound of the Ayima is more airy and detailed to my ears, i found the Fosi midrange, i mean human voices are a little bit veiled and muddy to my ears but... You are right he stock Aiyima is too much sibilant, for me really unlistenable so before to return it i tried to swap the opamps and now they sound perfect to my taaste, the voices are stunning, beautiful and the sibilance is totally gone. I had the best results within Akliam LC5 connected to the sockets with dip8 extenders without the amplifiers cases because they don't fit inside. I also have some Burson V7 Classics 10 times more expensive but to warm sounding to my taste, my listening references is always soundstaging and the rendering of male and female voices. The Akliam LC5 cost only 16€ each, i suggest to every Ayima of Fosi amplifier to try it

[alexander-xlnw]

Are both amp have the same opamp installed on their system?

[degreesdegrees-jreg]

buy a good mic. Let us here the difference thanks. :)

[goodsound]

Champs battle?
This is cheapest entry level beginner stuff...