My Favorite band in the world (with Blackberry Smoke and Gov't Mule and...) Derek Trucks only uses ONE of his amps. The other is in case one breaks (and they do!). Or - a guest comes onstage and needs an amp. Running into two amps at the same time is not always a good idea. Phase issues and general noise/tone problems. Most of the pros (with all those amps) usually only have one on at a time. They amp switch for different tones and songs. They even cabinet switch as well. I'm pretty sure you can't get Derek Trucks cleanish slide tone with a small lesser watt amp. And still be heard over a screaming 12 piece band with two drummers.