The Diamond Halo Chorus pedal is a uniquely styled, hand-built modulation effect. The Halo Chorus features a pitch modulation as well as a phase modulation effect due to it's dual path design. Each effect can be controlled individually via the Pm and Ch mix knobs. This allows the Halo Chorus to be capable of all kinds of crazy swirling madness. The Diamond Halo Chorus features an NOS Bucket-Brigade MN3007 chip that operates at 15v for extended headroom and clarity, premium Panasonic Capacitors and Burr-Brown op-amps, and true-bypass switching for pristine signal path with the effect on or off. The Diamond Halo Chorus also features stereo operation for room spinning chorus and phase (this feature is really fun with drunk people). The Diamond Halo Chorus also features an expression jack that gives the option of foot controlled modulation for rotary speaker style effects. The Diamond Halo Chorus provides some of the smoothest modulation of any pedal on the market. The full frequency response yields full, even chorus that doesn't sound thin or raspy. The Halo Chorus phaser function is funky and cool with super rich tone. When both are blended together there is some excellent spatial psychedelia that can be had. The Diamond Halo Chorus also features a kill-dry switch that allows for use in a parallel effects loop or you can use the chorus path for vibrato! How cool is that? Chorus, vibrato, and phase all in one pedal. The Halo Chorus from Diamond Pedals is the be-all end-all in modulation stompboxes. * Parallel combination of delay/pitch modulation and phase modulation gives versatile control over modulation effects from light chorusing to deep 'vibey' swirl