nad c368

Hi All. I’m planning on setting up a HT/2.1 for my new place and have spent hours learning about what to do on ASR. What an excellent resource! My HT/listening area will be 18ft W and 13ft L. The TV/speakers will be ~13ft from sitting area. This is one end of an open concept room which is 29ft...

So I recently got a NAD C 368, which uses a Hypex UcD amp. However I’m having a problem where I could swear that there’s a high pitched noise coming out of the speaker tweeters at all times. I find this even audible when music or movies are playing, during quiet passages. I’m trying to figure...