I have an NAD C375BEE and recently had a mishap w/ liquid poured into the unit (well, I had to send it in for repair and that that was the response from NAD - I didn't witness the accident, but neither did my daughter :-)
Anyway, while I was sending it in for repair, I decided to add the MDC DAC module. When it came back, I was very surprised by the difference in volume level between the DAC and the corresponding analog input.
I have recently added a Denon DNP-720AE (network audio player) that I connect both via TOSLINK and analog RCA interconnects. With DAC input, the volume becomes uncomfortably loud around the 11 o'clock position of the dial. With the analog inputs, I can turn the unit all the way to max volume and it's loud, but way less so than the DAC input. And, frankly, the sound is, well, thinner / less full.
I repeated a similar experiment with a Denon DBP-1611UD (2-channel analog output).
Thinking that the repair had not been successful, I returned the 375 to my local dealer, who similarly connected an NAD CD player (both via TOSLINK and analog).
To my embarrassment, the volume levels were nearly matched (although the sound quality was night/day different - the MDC DAC output was horrible - but that's another topic). The dealer explained that in the time required for me to drive to the dealer, the 375's capacitors has drained and, voila, the system was reset and all is well - "...happens all the time at our store."
Ah...OK...? So, I shrugged my shoulders and took the unit home and plugged everything back in and, no surprise, same result - my sources had wildly different volume levels between the MDC DAC and the corresponding analog inputs, although turned up to, say, 2 o'clock, the sound was fine.
What gives here, I am stumped? This is the first time I've connected the Denon sources to this int. amp; is it possible that the analog out levels from the Denon network and BD players are really that low or is something else not right? I tried switching cables and moving to different input jacks - not exhaustively, but a couple of them, with the same result.
Thanks, in advance...
"Play the volume as loud as you want - but don't touch my levels now. I got them set just like I like them"