MC2300

Power up the preamp first, mute, turn the volume down on the power amp then power up the power amp, volume up the power amp, volume up the preamp. If it pops then recap that puppy. :-) I've had a few MC2300 and 2500. "The Beast", broken they keep working.. Circuit breakers too. No BS fuses crap.. 

The only thing I've ever seen spin a meter faster were VTL 750 or 1250 watt MB valve amps.. They ALL could suck a Utility pole dry.. :-)

Happy New Year.

One of the all-time greats and possibly longest production super amp. They also hold their value: 

Thanks, will try the power up sequence. My MC2500 black face has the speaker switch. These are big amps when they are powering up.C46 is my pre-amp….Happy New Year everyone.