Electro-Harmonix is pleased to announce the new 22 Caliber Power Amp
, a versatile 22-watt guitar head that fits in the palm of your hand. Just plug it into any 4-, 8- or 16-ohm speaker, and you'll get a big, sweet musical sound.
Below is a quick video introduction from EHX engineering. The feedback toward the end is just guitar into a Big Muff Pi with Tone Wicker into the 22 Caliber into a 1x12 speaker cabinet: