Happy New Year!
I’m afraid that this post is not going to help anyone too much. First off, I have no experience with equipment of this caliber or any other AR gear. The first couple of weeks, the I/50 was connected to some 20 year-old semi-decent Klipsch speakers and it sounded great (again, to me). My new speakers are not in and the unit has been disconnected during some home construction. During speaker evals at the dealer, I found that the amp is too good for my turntable (Rega P2) and I need to improve my game there.
So- from a guy with tinnitus who ran it for a couple of weeks on bad speakers via an inadequate source- it was lights out awesome.