Dude, I am sure all these Rogue and D'oggistino guys tinkering in their garages learnt how to build amps by opening up old school amps from the likes of Technics, Pioneer or even some old school Marantz probably at some point
I have opened up Boseintosh crap with the meters n all from days past and noted that they were copied right over from old school Pioneer. Guess they had to learn.
Marantz HDAM circuitry has a sound. But, it isn't some rolled off crap. You probably had a broken amp. Did you plug it straight into the wall for "dynamics" n all? (Didn't protect it with a conditioner or something?). It's a common audiophile thing...plugging it straight into the wall for "dynamics" and sitting around with a half broken clunker soon enough... things don't break all the way don't turn on, they are usually half broken and will make some sound.....hope the wall "dynamics" was good while it lasted..
Rogue is awesome stuff. I had RP-1 and RP-5 paired with ST100. Great sound.

