The original MXR Phase 90's compact size, superior construction, and refined sound made MXR THE name in Phase effects, and it has long set the standard by which all other phasers are judged. Later, MXR released the Phase 45-a mellower version of the effect favored for its ability to easily blend into a band's mix. Now - with the MXR M290EU Phase 95 - you get both effects combined in one mini housing with about half the footprint of a standard MXR pedal. WIth both the Phase 45 and Phase 90 circuits at your beck and call, simply use the 45/90 switch to togglesbetween the Phase 45 mode's subtle two-stage phasing and the Phase 90 mode's more pronounced four-stage phasing. The Phase 95 also has two phasing styles. The default modern style which uses feedback to create light harmonic distortion and a pronounced swoosh, or you can engage the Script switch to remove feedback for a lusher, more subdued vintage style sound.The compact, rugged mini-pedal is perfect for any pedalboard and is powered from an included 9V DC power supply.