Maxon ST9PRpo+ Loosely based on Maxon's classic "808" circuit, the ST-9 Pro+ distortion pedal offers a dedicated midrange control that varies the amount of midrange boost, creating powerful, fat, and heavy distortion sounds akin to a full-stack amplifier. A mode switch to select from two different diode types allows the user to fine-tune the Maxon ST-9 Pro+ effects pedal for use with single coils or humbuckers, while switchable 9V or 18V operation provides increased dynamic headroom and fuller frequency response.
Natural overdrive of a tube amp
Easy-access, no tools battery compartment
Power input jack
True bypass switching
This pedal is brand new and has only been used for testing i.e.it works when I plug it in. Normal retail $260.00approx