keybplayer is more informative, and I apologize. But, yes, it is a feature intensive amp. If you have 2 of them you can run a 1/4 inch mono line from one to the other via it's stereo link, and it sends the LH signal to the second KC550 and the sound/eq is controlled from the first one.
They have have great tone for my VR-760 in all modes. They'll also blow the glass out of your studio ifn' you're not careful.