Formula 55

Catalinbread

Big and powerful, yet refined, the Formula No. 55 melts into your amp, transforming it into a wide ranging tweed monster!

The Formula No. 55 is a Foundation Overdrive that reproduces, in exact detail, the preamp section of the classic Fender™ tweed 5E3 Deluxe using an all-discrete JFET-based signal path. The Volume and Tone controls replicate, part for part, the circuitry of the 5E3, giving you authentic tweed amp response. The output section is designed to give you punch and volume with a low output impedance to drive your amp perfectly. Set the Hi-Lo button to "Lo" for the cleaner response of a vintage tweed. "Hi" is like hot rodding your amp by swapping in higher gain tubes.

https://www.catalinbread.com/index.php?category=all&product=formula-55

submitted Apr 8th 2018, 20:13 by meddlesmpriest | last Change Yesterday, 00:04 by aphra

Date	Region	Description	Price
08/27/25	EU	Next-generation 5E3 Tweed Deluxe inspired Foundation Overdrive with incr...	$150.92
08/25/25	USA	Used in smoke free studio. No box. ![Catalinbread Formula 55](https://...	$91.00
08/04/25	EU	Zum Verkauf steht ein Catalinbread Formula 55 im Zustand: Neuwertig.Der ...	$193.30
07/25/25	USA	The little box of Tweed. Featuring controls for volume, tone and ga...	$169.99
07/20/25	USA	Works like it should. Velcro on the back ![Catalinbread Formula 55](htt...	$98.00
07/15/25	USA	This is the rarer ruby colorway, with perhaps some changes form the orig...	$200.00
07/08/25	UK	Catalinbread Formula 5Product Description:Featuring controls for volume,...	$220.97
07/02/25	USA	Catalinbread Formula 55 purchased directly from Catalinbread as B Stock ...	$150.00
06/16/25	USA	Great tweed deluxe style overdrive! If you know, you know. Excellent con...	$120.00