Looks to me to be a Fender Tonemaster with matching Tonemaster 2X12 cab. Great amp designed by Bruce Zinky - I used to have a couple of 'em. By far the loudest amp I've ever owned. The 2X12 wighed a ton - almost 80 lbs if I recall.
Lot's of folks used those in the 90's - Jimmy Page, Sonic Youth, Lenny Kravitz. It's one loud mutha.