Blackstar FLY3 Guitar Amplifier, Battery Powered, Body and Cable Only, No Box or Batteries The following is a description from the sales site: "A 3W compact guitar amplifier that can also be used as an audio speaker. A 3W guitar amplifier that can be used anywhere. Two-channel design: "Clean" and "Overdrive": You can play everything from chord backing to guitar solos with just the FLY 3. Digital "Tape" Delay: Equipped with a digital delay that reproduces the sound of a pleasant tape echo. Blackstar's unique "ISF" control: You can create a wide range of sounds with a simple operation of just turning the EQ knob. Battery powered: Can be used with AA batteries. You can easily carry it anywhere and enjoy playing the guitar. Specifications Amplifier Output: 3W Channels: Clean, Overdrive Controls: GAIN, VOLUME, EQ (ISF), DELAY LEVEL, DELAY TIME Input Terminals: Guitar Input (Standard Mono Phone), MP3/Line Input (Stereo Mini) Output Terminals: Line Out/Headphone Out (Stereo Mini) Power: 6 x AA batteries, or optional power supply (PSU-1) Dimensions (W x H x D): 170 x 126 x 102 (mm) Weight: 0.9kg"