Features: Gain to set the amount of distortion when drive is switch on higher settings provide additional distortion. 3-Band EQ to Control Treble, Middle, and Bass. Treble provides high frequency equalization as required. Middle provides active midrange equalization with boost & cut. Bass provides desired amount of bass response. Volume to set from zero to full power. One Channel and 1/4 inch headphone jack. Headphone used to connect desired stereo headphone. Automatically turns off the amplifier speaker. Specification: Plug: US 110V Output Power: 15W (RMS) Speaker: 5" 4 Ohm or 8 Ohm Input: 6.35mm Item size: 29 * 28 * 11cm / 11.4 * 11 * 4.3in Item weight: 2545g / 5.6Lb Package size: 36 * 32 * 14cm / 14.1 * 12.6 * 5.5in Package weight: 3200g / 7lb Package List: 1 * Guitar Amplifier 1 * User Manual (English)