BOSS Phase Shifter Pedal with Phasing, Rise and Fall Effects, Tempo ControlThe BOSS Phase Shifter Pedal provides a wealth of vintage and modern phasing effects, including new Rise and Fall modes for unique, unidirectional phasing. Optional expression pedals provide real time control of the PH 3's Rate, Filter, and Tempo. Rise and Fall Effects In addition to standard up and down cycles, the new PH 3 Infinite Phaser can produce upward or downward moving sounds through its new Rise and Fall effects. There are also 4 , 8 , 10 ,