Joemeek gbQ Guitar Distortion Effect Pedal Full Control of Odd and Even Harmonic Distortion, or Clean Harmonic Shaping Unique Structure Control for Even More Tone Shaping i.e., "Open-Back" vs. "Closed-Back" Amp tones Hi-Impedance FET Class-A Preamp with up to 20dB of gai 3-band swept MeEQualizer - pre or post distortion DI Output with Earth Lift