The new Signal Cheyne Shelby Mk2 is a JFET distortion pedal with 3 gain stages. The two pairs of JFETs are run in "mu-amp" configuration, basically meaning that they interact like a pair of valves in push-pull configuration. Full of harmonics and weightiness, Shelby Mk2 goes from crunch to all-out raging valve amp.
Along with its 3 gain stages, Shelby Mk2 has an internal voltage doubling circuit, giving you the headroom of 18V from a standard 9V power supply.
Due to its amp-like circuit design, Shelby Mk2 responds really well to a boost in front of it. It also has plenty of volume on tap to boost the front of your amp.
What's New With The Mk2?
While the original Shelby had simple Volume, Distortion & Tone controls, the new Mk2 incorporates a much more flexible 3-band EQ, each with a wide frequency band.
Volume adjusts the output level of the pedal. There's plenty of volume on tap with the Shelby, allowing you to hit the front end of your amp really hard.
Distortion adjusts the amount of gain, from the Shelby's 3 gain stages. Go from crunch to full-bore valve amp tones dripping in harmonics and valve-like warmth.
Highs adjusts the treble frequency band.
Mids adjusts the mids frequency band.
Lows adjusts the bass frequency band.
Shelby Mk2 Features
JFET distortion run in mu-amp configuration for valve amp-like response