A-101-8 is a 8-stage phase shifter which uses light-sensitive resistors (LDR) and is a replica of the Compact Phasing A manufactured by the company Schulte in the seventies. The actual

Behringer released Dual-Phase, an authentic dual analog phase shifter with 12 opto-couplers The DUAL-PHASE brings out dreamy Gilmour-esque soundscapes or super-trippy ring-modulator tones reminiscent of popular phasers from the 1970s.