The MXR script logo Phase 90 is a reissue one of the most famous phase shifters ever created over the last four decades. The ’74 Vintage Phase 90 is a re-creation of a Phase 90 purchased in 1974 by Dunlop Senior Engineer Bob Cedro and constructed from a hand-wired board and hand-matched FETs to match the tone of the original. Get classic tone from the ’74 Vintage Phase 90