This may be a form of "friction welding" that is used quite widely in precision and aerospace industries. Much of what I have seen are high speed "butt welds" of drive shafts where a precision machined and hardened drive spline section is butt against a long hollow shaft that may be a different...
Hi Lloyd,
If the amps are selected for High Bias mode on the Colloseum or Mephisto, they do not leave Class A operating mode. The other selections, Low and Medium Bias will put the amps in a Class A/AB mode, Class A at approximately 50% and 75% respectively, of rated power before going into AB mode.
Sirs, I would like to attempt to clarify this matter of Class A watts and Class A amps. I am the distributor for Gryphon and Jadis in Singapore and Malaysia. Both these OEMs design and manufacture some the finest Class A amps. This is still in pretty lay man terms so it may not satisfy everyone...