Take note that the above poster returned the amp because he listened to audible sound. The A50+ utilizes a distinct TI amp chip (TPA3116) but I doubt which was the reason for the sounds as the TPA3116 can evaluate pretty perfectly. As pointed out I usually do not listen https://devindy21d.blogprodesign.com/57341786/a-simple-key-for-glass-engraving-unveiled