has anyone had a CLASSE AMP CA300 modded

thanks Rhljazz

If this ringing is a problem in the CA-300, it should also be a problem with the CA-200/CA-400/CA-301/CA-401, since they all use virtually the same style heatsinks and transistor mounting method.

I have no experience with the other CA models, only compared with the DR8. The heatsink metallurgy between these two amps sounded very different. The CA300 had the upper hand in deep bass response but the DR8 was superior from the mid band up. With the heatsinks damped, I then preferred the CA300 although the DR8 was still superior on voices.
Experiment and report your findings. I'm curious to hear your impressions.

I'm not shure how one can improve on gold plated bolts that can be torqued wrenched? I thought about converting all my amps to Classe's design..lol.

The bolts are very thinly plated plain brass. In addition, the mounting hardware is steel and is in the audio path. The terminations are ordinary tin or zinc ring terminals -- not great materials. My upgrade is to WBT Topline posts with pure copper, gas-tight crimped terminations. If these bolts were so great, you should ask yourself why Classé ditched them in favor of WBT posts ? The posts I installed are also higher up the WBT product line than the posts Classé has been using in their amps.