The 22 Caliber is a 22-Watt power guitar amp head that fits in your pocket. Just plug it into any 4-, 8-, or 16-ohm speaker, and you'll get a big, sweet musical sound. Crank the 22 Caliber's volume, and it'll go into overdrive -- like a vintage amp with a single volume control. Flip on the Bright switch to add some bite and definition. The 22 Caliber delivers everything that you would expect in a much larger amplifier, yet fits in the palm of your hand.