From The Vault : George Dennis Chorus/Flanger/Volume pedal

 From The Vault :

The George Dennis Stereo-Chorus-Flanger-Volume pedal works as either a Stereo Volume pedal, or as a stereo Chorus/ Flanger pedal. In the Volume pedal mode, pushing the pedal forward gives full volume, and pulling the pedal back gives minimum volume. Switching to the effects mode allows the pedal to control the modulation rate. By setting the feedback control to zero, a chorus effect is added to the signal, increasing the feedback changes this to a Flange effect, both of which are in stereo.

Side mount controls: rate, depth, feedback, Treadle volume,

A little control tweaking and you get "Leslie" rotating speaker tones ala Robin Trower

Tough all metal construction Manufactured in Europe and built like a tank.Optical control  for noiseless operation.Works on 9volt battery or your outboard 9vdc power supply

Essentially THREE pedals in one enclosure, with Failure-free true bypass

Weak battery LED flashing warning indicator.Should you neglect a battery change, your pedal will automatically switch itself to the bypass mode

• Remarkably low-noise
• Optical speed indicator
• Standard power supply socket with built-in protection against an accidental incorrect power supply polarity
• Speed, depth, feedback, effects level controls
• stereo/mono output jacks