Some how I got my LC/HC AC mixed up and ran the 500M amps on LC wire. I then realized my blunder after being depressed I made a bad move buying the amps. Installing the HC wire instantly corrected the lean weak sound to that of having drive and authority.
Driving the Pioneer/TAD S2Ex speakers with a Placette passive Pre amp/Lampi L5.
Have you any positive results with stands/footers under the amps.?