Well it sounds quite fine on that Genius satellite speakers.
For the price there is really not much to complain.
TDA2822M amplifier chip is STMicroelectronics ST developed dual-channel monolithic power amplifier IC, usually found in the pocket cassette player (walkman), tape recorders and multimedia speaker in for the audio amplifier.
The circuit is very simple, sounds good and has wide voltage range to operate. (From 1.8V to 12V.)
TDA2822M amp link:
http://s.click.aliexpress.com/e/FwgBKIlS
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tda pcb
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