Axiom Home Page Forums General Discussion Hearing Things Does all power amp sounded the same?

Sure. Amps are pretty complex devices and there is more to amp than it's power capabilities. You can bet that different amps are not designed exactly the same with the exact same frequency response, input impedance, output impedance, crosstalk, noise floor, distortion etc.

Amps may not behave the same at high power demands either. The Axiom Class D amp for example was able to deliver instantaneous current into any one or combination of its channels when needed.