Greg Koch on JAM pedals – The Twelfth Fret • Guitarists' Pro Shop
Triple Gristle Pedal
T. Jauernig Electronics Gristle King Overdrive > Effects | Replay Guitar Exchange
Greg Koch - JAM pedals
McNally Smith Presents: Greg Koch's Guitar Workshop Series | Lesson 1: Pedal Steel Techniques - YouTube | Lesson, Guitar, Workshop
Gristle King Pedal
Greg Koch joins forces with Tone City for the Lil Heat mini overdrive pedal | Guitar World
Tone City Lil Heat Greg Koch Overdrive Pedal - Andertons Music Co.
T-Rex Engineering Gristle King Guitar Effects Pedal - Walmart.com
Greg Koch - Gristle King Leans...get 'em while they're hot. I've got three ready to ship. My sig overdrive and clean boost device made by Tim Jauernig...go to gregkoch.com and click to