Early example in clean condition, except for the replaced bottom panel. One of the first compact pedals Boss released (along with the OD-1 and the SP-1).

Fully serviced and working well. As a phaser it may be pretty primitive, lacking even the Resonance control of the PH-1R. However it has a sound all of its own and found plenty of favour with musicians at the time. Youtube demo below.

It has only minor marks and signs of age. A real shame someone had removed the base in order to fix it to their homemade pedal board.

Ships ready to play with a new 9V battery.

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Useful demo here (with thanks to the uploader):