Features:Dual channels preamp pedal, and each channel with gain and volume controls.The clean channel can achieve both F style American shimmer and UK style warmth. The drive channel is distinctly Classic British with a modern twist that provides a huge gain range.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)