The behringer dual phase is a recreation of a popular 70s phase shifter made with authenticity in mind'. '.strtoupper('i')t has two phase shifters both with rate depth and feedback controls that can be run in series or parallel'. '.strtoupper('y')ou can also choose between sine and square wave shapes for each oscillator so you have plenty of options to customise your sound'. '.strtoupper('u')nlike the 70s model the dual phase has integrated dual footswitches that are used to engage or disengage either phasor a or b'. '.strtoupper('b')usy hands'? '.strtoupper('y')ou can connect an expression pedal or any cv source to change the sweep speed of the two phasors as you play'. '.strtoupper('t')his phase shifter is ideal if you want to get that out of this world 70s whooshy sound.