[. . . ] The power input is a 5. 5mm x 2. 1mm jack with the positive voltage on the outer sleeve. [. . . ] It also includes power protection circuitry to prevent damage from AC power supplies. 18dB, 23dB, 32dB, 37dB, 43dB, 50dB POWER SPECIFICATIONS SIGNAL TO NOISE RATIO, A-WEIGHTED VOLUME MAX, ANGER MAX . . . . . . . . . . . . . . . . . . . . . . . . True Hardwire Relay DIMENSIONS. . . 4-25/32" x 3-3/4" x 1-3/4" WEIGHT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The Angry Troll's two controls interact like a vintage mic pre amp. The Anger knob--a rotary switch with six Fists of Fury positions--adjusts the amount of gain created by the Troll's op-amp, while the Volume knob regulates the overall output level. High grade components are used for a precisely tuned circuit that works like an extension of your amp. ministe VOLUME - Adic onsl aught! [. . . ] High grade components are used for a precisely tuned circuit that works like an extension of your amp. ministe VOLUME - Adic onsl aught! [. . . ]