Nothing to stop you driving from Class A. Lowest distortion configuration because no crossover non-linearities. I had a Krell KSA100mk2 for many years, which sounded great, gave a hernia to lift it, and it blew up twice to the extent that flames were imminent. It burned clean through the board at one stage when 2nd breakdown killed the power transistors, which killed the drivers and the emitter loads for the drivers burnt through the board. Great fun, but I tend to like non-exciting technologies now; um like the STM-T2 clone