Features:Dual channels preamp pedal, and each channel with gain and volume controls.The clean channel is shimmering and bouncy, the gain channel can achieve purring blues tones, grinding crunch and soaring lead sounds.Integrated speaker cabinet simulation function; and Independent 3-band EQ: Treble, Middle, Bass.2 different modes for footswitch operation: preamp on/off or channel A/B.The LED button can switch between channel A/B(Blue/Red), or switch cab simulation on/off.Specifications:Input: 1/4" Monaural Jack (impedance: 1M ohms)Output: 1/4" Monaural Jack (impedance: 100 ohms)Power Supply: DC 9V (Center negative)(not included)Working Current: 220mAItem Size: 9.2 * 3.8 * 3.5cm / 3.6 * 1.5 * 1.4inItem Weight: 160g / 5.6ozPackage Size: 10.5 * 6 * 5cm / 4.1 * 2.4 * 2inPackage Weight: 180g / 6.3ozNote:The power adapter is not included.Please use the power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly.Package List:1 * Effect Pedal1 * User Manual(English & Chinese)