1965 Fender Bassman AA/AB165 but Sweet :)

This video features the rather extensive repair of a very unusual 1965 Fender Bassman with features specific to both AA-165 and AB-165 circuits, including several “unfinished“ circuit characteristics. The initial issue was a completely fried center-tap, but during its evaluation and repair, other unusual circuit peculiarities were discovered. Join us as we explore and repair this unique circuit. Additional topics include alteration of the NFB circuit and use of the Polarity Switch to make it switchable, discussion of hum cancellation in filament wiring, repair of my damaged Eurotubes bias probes, and modification of the Bass Channel tone stack to improve tone and favor guitar use for the customer. If you would like to support our channel, please SUBSCRIBE and consider becoming a Patreon patron at: or making a PayPal contribution to dldcam@. We receive absolutely no ad revenue from our videos and rely upon our viewer