Burchtone, thanks for the reply.

 I have a Mesa Boogie MkV which is also a monster amp. It does what a Mesa does better than any other but it's not a Marshall.  I'm betting this Chupacabra 50 would be a perfect compliment to the Mesa in a two amp setup. I have a 4x12 with greenbacks just waiting for it.
 My Ceriatone JTM 45 was almost completely dead quiet. The 2204 still had a slight hum through the speakers even with no guitar plugged in and all volumes set to 0. I know the gain can add some noise but that is not the noise i'm talking about.
I just want to know if you turn all the volumes all the way down if there is still much of a hum?

My CT 2204 had a low and slight 60 cycle hum that I could not get rid of. New tubes, bias adjust, local technician, just not quiet enough for bedroom. Put my CT JTM45 in and it is dead quiet. Even with no guitar or chord plugged into the amp the 2204 had an annoying hum. Not a high gain hiss, that I could get rid of.
Anyway I would like to hear some clips and a "how quiet is idle" report on this Chupacabra 50. This is the high gain Marshall I have been waiting for and it is at the top of my wish list.  80's hair baby!!!