Ruggedly constructed with a steel chassis and a perforated metal cover to protect the two preamp tubes, the Mighty Minnie packs Gain, Bass, Midrange, Treble, and Master controls--the latter with a push-pull function that inserts a 20dB pad into the circuit in order to give the Master more range of control at high Gain settings. The TGA-3 preamp stage is very responsive to picking dynamics, and it stays smooth sounding as the gain is dialed toward maximum for heavier rhythm grind and sustaining lead tones, which sounded fat and sinewy when driven with the Gibson and PRS guitars' bridge pickups.
Thompson, Art (2014) Demeter TGA-1-180D Mighty Minnie. In: Guitar Player, Vol. 48, No. 10, pp. 109. Available at https://openmusiclibrary.org/article/765311/.