how do you compare the hegel h80 to rogue sphinx v2???

Keep the Hegel. Rogue Class D amps have no low end, especially at low volume. 

@jmlab926 

I'm saying the Rogue hybrid amps (Sphinx and Pharaoh) struggle with the lowest octaves. It's as though they have a sharp roll-off under ~40 Hz. I don't know if it has to do with their class D topology, but I haven't experienced this issue with any class AB amps.