Features: Reproduces the sound of a for Fender 57 Deluxe amp, which can perfectly perform from original sound to overdrive.  Operation guide: Connect the input jack with the guitar tightly, and the effects pedal will start working then.  LOW:Adjust the low frequency;  MID:Adjust the middle frequency;  HIGH:Adjust the high frequency;  VOICE:Adjust the frequency response and the distortion; together with the adjustment of DRIVE, it can simulate many kinds of amplifier;  DRIVE:Gain control;  LEVEL:Adjust the output level.    Specifications: Input impedance:1M ohms;  Output impedance:1K ohms;  Running current:3.8mA;  Powered by:1 * 6F22 9V battery / DC 9V adapter (neither included);  Material:Aluminum alloy;  Effect pedal size:Approx. 12 * 9 * 5.5cm / 4.7 * 3.5 * 2.2in;  Effect pedal weight:394g / 13.9oz;  Package size:13 * 10 * 6cm / 5.1 * 3.9 * 2.4in;  Package weight:433g / 15.3oz;    Note: Please use the 9V power adapter whose polarity is positive pole outside and negative pole inside. Otherwise, the product may not work properly.    Package List: 1 * Guitar Effect Pedal;  1 * User Manual (English)