Source Audio SA240 Mercury Flanger Effect Pedal Three styles of flanger including Classic Flange, Thru-Zero Flange, and a highly resonant style of flanger called Shadow Flange. Download additional phaser and chorus algorithms or access a deep editing system with the Neuro Mobile App for iOS and Android. Pair the Mercury with the Neuro Hub and save up to 128 presets recallable with MIDI program change messages from an external MIDI foot controller.