The C2300 is the top dog in the McIntosh one box arena (IMO). I don't have MC501's -- but owned the C2300 & have moved upwards to the C500C/C500T.
Go to audioaficionado.org and ask there -- as many members w/MC501's have either the C46, C2200 and C2300 (probably moreso with the latter two units). You'll receive a much more direct reply to your answer.
Best
Go to audioaficionado.org and ask there -- as many members w/MC501's have either the C46, C2200 and C2300 (probably moreso with the latter two units). You'll receive a much more direct reply to your answer.
Best