Just got mine yesterday to replace an inexpensive Douk Audio Nobsound 1002P. And hmmmmm Im disappointed. The 1002P sounds richer more live than the BT20A Pro. The Fosi just sounds a bit flat for my kind of music. I tried swapping them over 50 times to compare, and no matter where the tone knobs are on the fosi the 1002P just sounds better. Using it with my computer with a SMSL SU-1 DAC and B&W 685 V1 speakers.