It might be worth a quick check to make sure the amp isn't punching up the bass response a couple of dB but what you are describing seems to match what I'm experiencing with a known (or at least believed-to-be) flat-response amp.

Last edited by bridgman; 07/01/16 05:37 PM.
M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8