Originally posted by calieng
I dropped a Hoffman AB763 PTP board in my '65 Deluxe Reverb RI. It sounds fantastic and the same board could also be used in your Twin. You may need to add the rectifier if it is on the stock RI board and not seperate...I've never taken one apart before so I am not sure.
I did the work myself on the DRRI for $230 (the cost of the assembled board only) but if you need a tech to do it, it would be about a $500+ upgrade. The advantage is you end up with a new "boutique" amp that will hold its own against most any other amp out there. If you buy a vintage Twin you may end up with an amp that needs a lot of work with a beatup cabinet.
Either way, the stock '65 RI Twin falls short of its true potential by a long shot.