BOSS - PH-3 Phase Shifter - Effect pedal

The big new feature of this effect is the ability to control specific parameters in real time by connecting an expression pedal or an external switch. Although it belongs to the pedal effects category (simple effects), the PH-3 offers remarkable flexibility for real-time control. Connecting a footswitch or an expression pedal to the dedicated input unlocks the PH-3’s full range of functions. The expression pedal lets you control the effect’s rate, while the footswitch lets you set the phasing tempo as you play.
technical specifications
New “Rise” and “Fall” effects generate a unidirectional phasing effect.
Selectable 4-, 8-, 10-, and 12-stage phasing.
Real-time control of the “Rate” parameter by connecting an external expression pedal.
Tap tempo to synchronize the phasing wave.