The only negative comment I have was that when I went to pull back off my Monster cable 4-ch RCA low-level input cable... one of them didn't want to let go of the female connector on the amp... and it ended-up pulling the outer sheath of the female RCA connector off from the amp itself! I carefully re-inserted this female connectors two prongs back into the holes they came out of and it seams to work ok. I'm kinda stunned that this piece wasn't better fastened into the unit itself. However, later-on in talking with tech support some other day calling about something else I mentioned this happened and they told me that with the Monster Cable RCA's you have to twist them while pulling them back off. Because of the way they are designed.