Vintage Boss PH-1 Phaser
 
Made In Japan In April Of 1978
 
The Boss PH-1 Phaser was one of the first 3 Boss compact pedals produced (along with the SP-1 and OD-1). The PH-1 is a standard 4 stage phaser that was produced to emulate the swirling tones of the popular Leslie style cabinets without needing a specialized speaker setup. 
 
The Rate knob adjusts the speed of the phase and the Depth knob controls the intensity of the effect. 
 
This is the earlier silver screw model with a momentary LED. 
 
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