For your consideration is a used 1990/1991 Mesa Boogie Mark IV all tube rackmount amp head. Nothing like a Mesa Boogie!

Works perfectly, does have some signs of use as pictured, but tubes have plenty of life left. Loaded with both EL34 and 6L6 power tubes as pictured. 

Of course it sounds awesome...from clean to mean!

Comes with footswitch, extra reverb tank, and copy of the manual.