Dumble 5E3 Fender Deluxe Tweedle-Dee Conversion Owned by Mark Tremonti 1957, Tweed

The legend behind the Dumble name is well-documented, while also being well-deserved. Howard Alexander Dumble’s talent and near-mystical command of guitar amplification stood unmatched in his era, which sadly came to an end with his passing in 2022. His inventory is scarce, and his clientele was exceptionally exclusive—Dumble didn’t take orders; he chose you. 

This amp was originally built for Dave Isaac, an assistant working with Drew Berlin, who now runs the Dumble estate. It began life as a 1957 Deluxe 5E3 and was fully converted to Dumble’s renowned “Tweedle-Dee” circuit. This included a complete repopulation of components, a phenolic board, and new wiring throughout. One of the most fascinating details is the documentation included with the amp: a handwritten analysis in which Dumble fully reverse-engineered the Heyboer output transformer used in the build. This was likely done to fine-tune the circuit and maximize its performance with that specific transformer. The hand-written envelope and hang tag addressed to Dave further reflect the personal touch Dumble brought to his finished work. 

The amp was later acquired by Mark, and it includes a signed letter detailing his experience with it.