With few exceptions, Jack displayed a continued partiality towards amps and pedals from the 1960s. Jack used a number of effects to create his sound, such as a DigiTech Whammy IV to reach pitches that would be otherwise impossible with a regular guitar. When performing live, Jack used a Randy Parsons custom guitar, a 1964 JB Hutto Montgomery Airline, a Harmony Rocket, a 1970s Crestwood Astral II, and a 1950s Kay Hollowbody. Also, while playing live, he used an MXR Micro-Amp, Electro-Harmonix Big Muff Pi distortion/sustainer, and an Electro-Harmonix POG (a polyphonic octave generator). He also used a Boss TU-2 tuner pedal. He plugged this setup into a 1970s Fender Twin Reverb, and two 100-Watt Sears Silvertone 1485 amplifiers paired with two 6x10 Silvertone cabinets. In addition to standard guitar tuning, Jack also used several open tunings.