Modeled on the MXR Phase 90 with Depth and Feedback controls added.
Full range so can be used for guitar or bass.
The blue LED flashes in time with the Rate control.
Youtube demo by Tonefactor
YouTube demo posted by a customer
Heavy duty 'B' size 2.3" x 4.4" Hammond aluminum enclosure
True Bypass
Use a standard 9V adapter with tip negative jack or a single 9V battery.