GK MB500 ($275) and GK MB800 ($325) amps for sale. Both in great condition with minimal blemishing to surface finish. Never had any problem with these and love that GK sound, but I need to downsize. Have 1 original GK switch pedal and 1 homemade custom switch pedal, 1st buyer gets choice. I also have a laptop case that perfectly fits either of these and was used to transport whenever leaving the house that can be purchased for an extra $20. *MB800 has a switching issue. Will switch from channel A to channel B using front face buttons but won't switch back to A without powering down or using footswitch. Otherwise it's in excellent working condition. Price includes shipping to lower 48. Will ship after receiving payment (via Paypal).