The model inside this preamp is a highly sought after, hand-built and modified version of a classic American style 30Watt combo. The clean channel is fat and dynamic with sparkly highs and warm lows. The drive channel provides more punchy and powerful cleans and vintage overdrive that can sing on every note. This preamp is a delight for true, boutique vintage tone chasers.           Features:            High-quality dual channel preamp, clean channel is fat and dynamic, while drive channel provides more punchy and powerful overdrive.             Each channel with gain and volume controls.             Independent 3-band EQ: Treble, Middle, Bass.             Supports speaker cabinet simulation function.             2 different modes for footswitch operation: on/off or channel A/B.           Specifications:            Material: Metal             Input: 1/4'' Monaural Jack (impedance: 1M ohms)             Output: 1/4'' Monaural Jack (impedance: 100k ohms)             Power Supply: DC 9V (Center negative)(not included)             Working Current: 300mA             Item Size: 9.2 * 3.8 * 3.5cm / 3.6 * 1.5 * 1.4in             Item Weight: 160g / 5.6oz             Package Size: 10.5 * 6 * 5cm / 4.1 * 2.4 * 2in             Package Weight: 180g / 6.3oz           Note:            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 Pedal             1 * User Manual(English & Chinese)