The Darth Fazer pedal is a phaser pedal. The depth control allows you to dial in the slightest hint of phase shifting, the resonance control allows you to adjust the voicing quality of the phase shifting in order to go from smooth tones to raspy tones. The wet/dry mix control allows you to dial in 100% clean guitar signals to pure phase shifting vibrato tones. There are 2 extra phase stages that have been added and the phase switch allows you to change between phase stages 4 and 6. This pedal comes in a 125B enclosure with an external 9V power supply socket only. The Darth Fazer is metallic purple in colour and comes with a matching purple LED. If you would like to have the halo light plate fitted at an additional cost, then please request this when ordering.