Be aware that the above mentioned poster returned the amp simply because he read audible noise. The A50+ employs a special TI amp chip (TPA3116) but I question which was the cause of the sounds since the TPA3116 can evaluate extremely nicely. As pointed out I do not hear https://paxtonak77g.laowaiblog.com/35010103/the-smart-trick-of-glass-engraving-that-nobody-is-discussing