Catalinbread FORMULA NO. 55 Vintage Fender Tweed Amp Pedal

by Catalinbread
$ 179.99


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Available today at our San Rafael Store

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  • Turn your amp into a 100 watt tweed Deluxe!

    Well no, but that’s what it’ll feel like when you plug into your new Catalinbread Formula No. 55! Big and powerful, yet refined, the Formula No. 55 melts into your amp, transforming it into a wide ranging tweed monster capable of everything from smokey, clean Grant Green jazz tones all the way to full on raging Crazy Horse excursions!

    The old amps from the 50s were primitive beasts and the 5E3 Deluxe was no exception. Its preamp section let a lot of low frequencies through but then it would encounter an output section (power tubes, output transformer, and speaker) that couldn’t handle all that low end, often resulting in a flubby response, especially if you turned the Volume up. In fact, if you look at the manual from an old 50s tweed, it advises you to “turn down the Volume should you experience any distortion”. Of course, a lot of guitarists ignored that advice and cranked it up anyway, much to Leo’s chagrin, and the sound of rock was born. The Formula No. 55 gives you that huge low-end response but was specifically voiced for touch-sensitive dynamics and a fat, but tight and punchy sound. You can play a palm-muted boogie-woogie rhythm pattern, for example, and if you don’t bear down too hard with your picking attack you’ll get a big chunky, woody sound, the kind of sound that you’d think would flub out if you suddenly started strumming harder. But start thrashing away and the response will get tighter instead of flubbing out! You just have to try it for yourself to see!

    The Formula No. 55 is a Foundation Overdrive that reproduces, in exacting 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 lots of 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.

    Like all Catalinbread pedals, no SMD parts are used for audio circuitry. Only through-hole components selected for tone and response are used such as carbon composition resistors and premium capacitors. They hand-build them and they tone-test each one to ensure you get the best they can offer.


    • Volume: From warm fat jazz clean to thick horn-like barking overdrive.
    • Tone: Noon for flat. Turn down for warm, smokey tones. Turn it up to boost upper mids and cut through the mix.
    • Presence: Adjusts ~ 5khz range. Set to noon to start. Turn it up for more bite! Turn it down to warm things up.
    • Master: Sets output level. Lots of boost on tap.
    • Hi/Red: Like swapping in hotter tubes, for more gain, overdrive and attitude.
    • Low/Green: Low gain mode from clean to overdrive
  • Shipping

    We understand that when you make an order, you want your gear as quickly as possible and we'll do our best to make that happen! Most of the items we sell will ship quickly and be at your door fast. In most cases, orders ship within 1-3 business days. Shipping and delivery dates are not guaranteed unless otherwise specified.

    Orders $50.00 and over qualify for FREE shipping within the Continental United States. Some exclusions may apply.

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    Easy Returns

    If your order arrives and it is not right, we'll take care of it, no monkey business, we promise.

    Instrument doesn't sound right or just not happy with the product? You can return any new, unused and unaltered item within 30 days of the shipment date, for a full refund of the purchase price minus shipping costs, or for exchange or credit.

    See our full Return Policy for all of the pertinent details.

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    With each WarrantyLife purchase comes a free online warranty account, where you can track the warranty coverage, review Terms and Conditions and gain access to claim information should you need it. Something not offered by other warranty companies.

    What's Covered?

    • Power surges
    • Mechanical or electrical failures, including those due to normal wear and tear
    • Defects in materials and workmanship
    • Internal heat, dust and humidity

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