If you don't want to run expensive class A amplifiers due to their electrical bill - then its right time to look into class D amplifiers. If you want expensive, with prestigeous name and very expensive then look at Mark Levinson #53.($50k).
If that is too expensive then look at Jeff Rowland which recently issued new A/B class amplifiers but with (financially) economical switching power supplies.
Alternatively, Spectron monos I have - use old fashion transformer based power supplies nut consume only 40 watts and sound not terribly bad too (somehow I survived ;---)
If that is too expensive then look at Jeff Rowland which recently issued new A/B class amplifiers but with (financially) economical switching power supplies.
Alternatively, Spectron monos I have - use old fashion transformer based power supplies nut consume only 40 watts and sound not terribly bad too (somehow I survived ;---)