I have M3 Turbos and can easily switch between several amps (McIntosh MC 75's, Marantz MA-5's and a First Watt SIT 3) and frequently do just that as well as use different room placement. The MA 5's have the most headroom by far FWIW, but the SIT 3 is the amp that gets the most use and The MC 75's get used least. The SIT 3 sounds best to me overall, all other things being held constant.