Are these amps the newer version with 100,000 imput impedance?
Any damping materials been added?
Tried weights on them?
Binding post upgrades?
What kind of power cords would be provided with them (or have you tried)?
Have you tried them with power conditioning (supposed to help greatly)?
What sort of speakers have you tried them with? (My speakers are 8 ohm, 90 dB/w/m, single drivers that reach below 30 Hz. My room is 2,000 cu. ft. and I'm not a headbanger.)
thanks