Classé sells a remote pigtail with RJ-12 phone jack on one end and a small circuit board on the other end. You plug the pigtail into the remote jack on the back of the amp, and you plug the amp into any kind of remote triggered outlet, like the Niles Audio AC-3 or the Russound ACT-1. When the outlet is energized, the circuit on the end of the remote pigtail senses the power and turns the amp on. I think the Classé remote pigtail is around $25.00-$30.00.
I can also build you an IR learning remote switcher that plugs into the RJ-12 jack. The switcher can be powered by any 12V wall wart supply, and can be taught the code from any IR remote.
Send me a PM and I will reply with the Classé pinout diagram with my enhancements.
Here's a link to pics of an IR switcher I built for someone with a Classé CA-150:
http://img.villagephotos.com/p/2003-5/191557/2097974