Fosi Audio BT30D VS BT30D Pro and Aiyima A07 Class D Amps

Just a organic review of Fosi Audio's BT30D and BT30D Pro Class D Audio Amplifiers. I didn't have the Aiyima to show but I feel it's in the same class/category of these two Fosi Audio Class D amps. Amazon US : BT30D Pro: https://amzn.to/3FofED4 Amazon US: BT30D: https://amzn.to/44PhW8J BT30D Pro: https://fosiaudio.com/products/fosi-a... BT30D: https://fosiaudioshop.com/products/bt... 48VDC PWR Supply: https://fosiaudioshop.com/products/fo...