Anyone modded Classe CA300?

Damping the ringing heatsinks helps a lot for a DIY simple mod.

The CA200 may not have a big problem with this. The fins on the CA300 make a high frequency ping when tapped with your finger nail which my DR8 amps only make more of a dull clink sound when tapped. The transistors are mounted to the back side of the finned heatsinks. I used some strips of black painted MDF with brass cones upside down, set on top, used as weights run length wise just sitting atop the fins to damp the resonance. The amp did not run warm so it did not overheat the wood nor did the wood make the fins run appreicably warmer. I did find a reduction in glare and better reproduction of female vocalists along with a warmer more tightly focused soundstage.