Acoustic Multi-FX Pedal. The Tech 21 Fly Rig Series is known for travel-friendly, grab-and-go pro tones for live and studio dates. The latest addition to the series is the Acoustic Fly Rig. Specifically tailored to complement the particular nuances and traits of acoustic instruments, the Acoustic Fly Rig provides round-the-clock ease and confidence for any gig, anywhere and everywhere you perform. Phase Flip switch flips the signal 180 degrees in phase to help combat feedback. Analog SansAmp circuit, Boost function (12dB), Tuner, Effects: Compressor, Reverb, Delay, Chorus. 1/4-inch 1megOhm input, XLR output with ground lift, 1/4-inch low impedance output, Headphone button switches the 1/4” output into headphone mode, Rugged, all-metal housing, Metal footswitches and jacks, Silent-switching, custom footswitch actuators, Utilizes included 9V DC power supply, 200mA.