What speakers are you running and what is their efficiency? 25wpc is enough power for speakers with a 93db or more efficient. The 70wpc is a safer bet and it will not have the heat problems that a class A amp might present.
FWIW I agree with you about low wattage amps even though I play my music somewhat loud. But it doesn't take that many watts IF your speakers are efficient.
FWIW I agree with you about low wattage amps even though I play my music somewhat loud. But it doesn't take that many watts IF your speakers are efficient.