Catalinbread Formula 55

Dumble Overdrive Special Amp Head

The Formula 55's tweed-amp sag and bloom echo the Dumble's own touch-sensitive breakup, so stacking the two doubles down on that feel rather than clashing.

Fender Vibrolux 6G11

The Formula 55's tweed-amp sag and bloom echo the Vibrolux's own vintage Fender character.

Dumble Steel String Singer

The Formula 55's tweed-amp sag and bloom echo the Dumble's own liquid, touch-sensitive breakup.

Peavey Classic 30 II 2-Channel 30W 1x12 Combo

Into the Classic 30's warm tube breakup, the Formula 55's sagging, bloomy drive pushes it further rather than just adding volume.

Two-Rock Vintage Deluxe 6L6 35W 1x12 Combo

The Vintage Deluxe's glassy, uncompressed sag gives the Formula 55's own bright, sagging overdrive an even more dynamic front end to build on.

Two-Rock Classic Reverb Signature 6V6 40W 1x12 Combo

Push the Classic Reverb's club-ready, transformer-driven headroom with the Formula 55's own bright, sagging overdrive and it blooms naturally.

Bruno Cowtipper 45

Stack the Formula 55's tweed-voiced sag ahead of the Cowtipper 45 and the amp's own breakup blooms further instead of just getting louder.

Fender Dual Showman

Where this leans warm, Catalinbread Formula 55 answers back bright

Fjord Fuzz Mime

Catalinbread Formula 55's bright balances out the dark tone — goes in the amp's FX loop (or last, into a clean amp)

Ibanez Tube Screamer

The Screamer's mid-forward boost stacks with the Formula 55's own bright, tweed-amp sag and bloom.

Beetronics BeeBeeDee Analog Delay

Catalinbread Formula 55's own bright character is the real reason this is worth trying — goes in the amp's FX loop (or last, into a clean amp)

Mr. Black Bloodmoon

Catalinbread Formula 55 leans bright right where the dark tone needs it — goes in the amp's FX loop (or last, into a clean amp)

Suhr Dark Discovery Analog Delay

Catalinbread Formula 55's bright balances out the dark tone — goes in the amp's FX loop (or last, into a clean amp)

JHS Pedals JHS Mod Shop Deluxe Memory Boy

Catalinbread Formula 55's bright balances out the dark tone — goes in the amp's FX loop (or last, into a clean amp)

J. Rockett Clockwork Echo

Catalinbread Formula 55's own bright character is the real reason this is worth trying — goes in the amp's FX loop (or last, into a clean amp)

Death By Audio Reverberation Machine

Run Catalinbread Formula 55 after it and the dark edge settles into something more bright — goes in the amp's FX loop (or last, into a clean amp)