I haven't tried the Mini's optical digital output, but the MacBook's optical digital output sounds excellent.
Could be the Toslink input on your Rotel pre-amp isn't that great.
If you're not using the Rotel in a HT system, take look at the TacT S/M2150.
Could be the Toslink input on your Rotel pre-amp isn't that great.
If you're not using the Rotel in a HT system, take look at the TacT S/M2150.