The DigiTech GSP2101 is a studio and guitar processor/preamp built with a 24-bit signal path and 48-bit internal data path.

Features: tube and solid state distortion, digital and analog EQ, tube preamp, programmable algorithms, built-in effects that can be run in tandem including Whammy and Chromatic Pitch Shifter

Used but recently serviced and in very good condition.

Control One footswitch also available for free (but needs repairs)