Bearotti, class AB amps usually operate in class A up to some power level. The exact amount will vary from a few milliwatts to several watts, depending on how generous the designer is with biasing of the output stage.
You mentioned a concern with low level listening. The Classé Model Fifteen, when biased to factory spec should deliver about 5.3 watts in class A into an 8 ohm load. That should be enough to keep you in class A for most listening at low volumes with reasonably efficient speakers.
You mentioned a concern with low level listening. The Classé Model Fifteen, when biased to factory spec should deliver about 5.3 watts in class A into an 8 ohm load. That should be enough to keep you in class A for most listening at low volumes with reasonably efficient speakers.