Boss PH-1 Phaser

The Boss PH-1 is a 4-stage phaser covering a 16 second to 100 msec range. It was released together with the OD-1 and SP-1 as the first three Boss compact pedals. The phaser attempts to emulate a rotating speaker like the Hammond Leslie cabinets that was very popular among organ players in the 1970s. With the added settings on an electronic version users are able to dial in tones that a real rotating speaker could never achieve.

  • Phase effect with a wide range from very slow to fast speed
  • Natural phase sound yields unprecedented power in studio and on stage
  • Depth control allows shallower to deeper effect
  • Check lamp lets you confirm the changeover between Effect and Normal modes
  • Vintage Boss pedal produced from 1977-1981
  • Clean, simple and classic

Gear company

Stomp box division

Stomp box group
Stomp box type


9V battery; 9V tip negative