For Sale: One Accutronics spring reverberation tank unit. Measures 17” x 1 &1/4” x 4.5”. US Patent #: 2982819. I’m not sure where? what I got this from. Definitely a guitar amp but I don’t remember the details of what brand or what kind. 2 springs. Comes with unit only. No cables or connections included. Darien, IL
“The industry standard for years, the type 4 is still manufactured today using Hammond's original design. Four counter-wound and coupled springs deliver superior mechanical performance and the classic sound that helped make the Fender Twin Reverb amp famous. Outer channel dimensions are 16.75" length x 4.735" width x 1.313" height.”