We play an original Electro Harmonix Small Stone Mk1 Phaser through a Marshall Plexi half stack from 1968/1969 using a 1963 Fender Stratocaster and a 1960 Gibson Les Paul Standard (original Burst). This is the pedal that David Gilmour used on the 1975 Pink Floyd album - 'Wish you were here' for instance on the song 'Shine on you crazy diamond'. It's also the pedal the Jean Michel Jarre used on the 'Oxygene' album (Eminent 310 Organ through this pedal)