Supro launches amp-like Tremolo guitar effects pedal

A gain circuit and output transformer promise vintage wobble aplenty
A gain circuit and output transformer promise vintage wobble aplenty

Since its return in 2014, Supro has been awfully busy, but besides its non-stop onslaught of vintage-voiced amps, it's been quietly beavering away on a range of pedals. We saw the first fruits of its labour earlier this year, but now the company has unveiled an amp-like Tremolo.

The simply monikered Tremolo is designed to replicate two sought-after modulations: the Amplitude mode generates the tones of original Supro amps, where bias modulates power valves; Harmonic mode, meanwhile, apes the harmonic tremolo effect of Fender's 'brownface' and blonde amps from the early '60s.

Preamp and power amp sections are paired with an actual output transformer for amp-like tone, while a built-in gain circuit allows players to overdrive the output stage. The overall output level is automatically compensated as you up the gain, too - very handy indeed.

Speed and depth controls handle the usual tremolo duties, while a TRS expression pedal can also be used to adjust the speed. The pedal operates on 9V battery or power supply and utilises noiseless true bypass switching.

The Supro Tremolo will be available in December for $229/£209. See Supro for more.


  • Switchable AMPLITUDE or HARMONIC modes
  • Emulates a Class-A tube amp circuit from end-to-end
  • Achieves magnetic saturation via output transformer
  • Gain control with auto level compensation
  • Expression pedal control for SPEED
  • Accepts standard 2.1mm neg. tip power supply
  • Runs on 9V battery (included)
  • Current Draw under 30mA
  • Pedal size: 12cm x 6.5cm x 6.5cm
  • Original circuit design by Thomas Elliott
Michael Astley-Brown

Mike is Editor-in-Chief of, in addition to being an offset fiend and recovering pedal addict. He has a master's degree in journalism, and has spent the past decade writing and editing for guitar publications including MusicRadar, Total Guitar and Guitarist, as well as a decade-and-a-half performing in bands of variable genre (and quality). In his free time, you'll find him making progressive instrumental rock under the nom de plume Maebe.