doesn't work, do bother buying this board. it's a paperweight at best.
Item took months to arrive, it came broken, chip was not soldered to the board (became apparent after removing heatsink), seller refused to refund, aliexpress arbitration didn't help at all. Fortunately, another seller delivered a similar amp board very quickly (a working one), and with some effort I managed to fix this one, although I would not trust it to work for more than a week. Do not buy your project boards from this seller.
Not just one amp was working out of the box. The quality of the soldering point was miserable and some parts werent even in contact with the board or just broken during shipping.