Here is a 1993, Rev F, Mesa Boogie Dual Rectifier for your consideration. This head is in Really good shape for being 18 years old. The tolex is in 6-7 out of 10. The electronics are fully functional and yes it does do the Dual Rec thing really well. The amp itself is a custom shop piece with the black diamond plate, however it was also built with a solo boost implemented in the effects loop. Boogie confirmed that it was a factory modification done per the customers request. If you want more gain and thump than you could ever really use, shes got it. If you want baby squrils to fall out of trees when you palm mute an open E, shes got it. The amp will seriously hist your chest hard enough to cure abnormal heart rythms. If this amp and Chuck Norris were to fight, they would end up being best friends. I will consider the following Marshalls for trade, any 4 input head, A 50/100 Jubilee, AFD head, or Bluesbreaker. It never hurts to ask though.