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Originally Posted by guitardom  not sure what you mean exactly, but there is a toggle switch on the front in each channel section that is selectable. |
Right, but what's going on in the power amp section when you step on the channel-select footswitch that allows it to go from a true 10 watts rms to 90 watts rms? Usually that involves disabling some tubes (at the very least), no? I'm trying to figure out how MESA/Boogie gets around risking high voltages arcing over relay contacts, or else non-instantaneous power output changes.