I bought few a07 pros and in every amp i was hearing loud hiss even when the volume pot was all the way down. Never had thit issue with original a07, a07 max, a08 pro, fosi v3, bt20a pro and many other amps
That Aiyima will never reach near 300 watts per channel no matter what power supply is coupled with it. Plenty of people on forums have tested this. However i'm not saying it's a bad amplifier.
