Notice that the above poster returned the amp since he listened to audible noise. The A50+ uses a special TI amp chip (TPA3116) but I doubt which was the reason for the sound because the TPA3116 can evaluate extremely nicely. As famous I usually do not listen to audible https://jaredwmz00.vblogetin.com/41883935/a-simple-key-for-wood-engraving-unveiled