I believe the difference is not just watts... But I believe the 601 is quad balanced while the 1201 is not.
Mcintosh mc-601 or 1201 ?
I want to buy one new amplifier for my system, i have a mcintosh mc-601 monofónic amplifiers, the mcintosh mc-1201 mono amplifiers is a upgrade over 601?, is 1201 better than 601?