The Keeley Dark Side Multi-Head Tape Delay is a multi-effects pedal featuring a Tape Delay as well as Rotary, Flanger, U-Vibe and Phaser effects. The Dark Side is built for creating sounds and adding new tones to your symphony. The individual components that make the Dark Side workstation are Fuzz, Delay and Modulation. The Fuzz side of the Dark Side is a big fuzz style distortion based on a 1977 op-amp style.

The Delay and Modulation sides allow you to select between a multi-head tape delay effect or between a combination of four different modulation sounds. The Dark Side delay has 12 different syncopated delays. The modulation effect includes four parts; Flanger, Rotary Speaker Cabinet, U-Vibe and Phaser. At the heart of the Dark Side is a hand built board that contains analogue fuzz and a high quality 24-bit DSP engine.