The Speaker Cranker is a discrete, all-analog distortion enhancement device (i.e. not a booster) designed to give your signal some extra grit and a slight boost without drastically altering your tone. Think of it as sticking an extra preamp tube in your amplifier for more overdrive. Single notes will blossom and bloom with rich harmonics and responsive tube-like sag. Power chords will sound thicker and crunchier, a little more ragged around the edges. Complex chords will remain distinct and complex, as the Speaker Cranker is designed to preserve your tone's integrity without muddying up the low-end, or "rounding out" the mids, or adding any top-end "shimmer," or "sparkle," or any of that other garbage. It's your tone. Cranked. Ya got that? You want more? Turn up the "More" knob. That's all there is to it. If you want "More," you got it. The Speaker Cranker's "More" knob works just like a tube amp: lower on the dial you'll find thinner, quieter tones. Crank it up, and you'll hear your tone, only fuller and with a slight touch of compression. If you want a boost, buy a booster, because the Speaker Cranker is an overdrive, buddy, and don't you forget it. Need to add some tube-like breakup to an amp on the edge of distortion without overloading the preamp? Speaker Cranker. Want to fatten up the sound of your favorite pedal? Speaker Cranker. Wish your amp had a second channel? Speaker Cranker. Low output pickups got you down? Speaker Cranker. Dying to stack some overdrives for that classic, touch-responsive, cascading gain shred tone? Speaker Cranker. Just remember, the Speaker Cranker is an overdrive, not a boost. Dimensions: 11 x 6 x 3.8 cm