mfos 8-stage phase shifter - d.i.y. - unique gear - switchable 4 or 8 stage phase shifter. --build by sound & breakfast. case is abs plastic, psu included (12v ac wallwart, voltage reg' is done inside). circuitry, case and control parts are new, aop's are op275 everywhere on audio path, only first choice components inside. fully tested, this one sound really well, not noisy at all. design is done with vinyl sticker sheets finished with resistant vernish. so it's not as perfect as on commercial gear. but it's a unique one..