Krell, Coda and some Thresholds use a "sliding" bias, so they can run cooler at idle. It's still class A, but bias is automatically adjusted on demand.
How much class A is another question that has a lot to do with the load. For example, my amps run hot and are rated for 100W @ 8ohms, however, bridged into 4 ohms, 650W of class A is just unrealistic.
How much class A is another question that has a lot to do with the load. For example, my amps run hot and are rated for 100W @ 8ohms, however, bridged into 4 ohms, 650W of class A is just unrealistic.