Features:Overdrive effect pedal with 2 working modes: Gold mode(mimic of the classic gold centaur overdrive pedal); silver mode(a powered version with an extended gain range).3 control buttons: TREBLE(adjusts the high frequency level to make the sound dark or bright), OUTPUT(adjusts the output level), GAIN(adjusts overdrive effect under the gold mode; adjusts near-distortion effect under silver mode).Has optional True Bypass/ Buffer Bypass modes for running the pedal. Push and hold the footswitch and power up the pedal to select the True(Red LED indicator) or Buffer(Green LED indicator) bypass mode.Crafted with a built-in OP-AMP voltage-converter driving the 18V to OP-AMP. Higher voltage-supply orders-up more harmonious and more various sound effects.The Horseman can be used as a clean boost via the gain and output controls. Dial-up a low-gain with a high output setting, and it adds mostly volume and minimal color to your sound.Specifications:Input: 1/4 inch monaural Jack(impedance: 1M)Output: 1/4 inch monaural Jack(impedance: 10K)Power Supply: DC 9V AC adapter (center minus plug)(not included)Working Current: 20mAItem Size: 4.2 * 9.2 * 3.5cm/ 1.7 * 3.6 * 1.4inItem Weight: 170g/ 6ozPackage Size: 11.5 * 6.5 * 7.5cm/ 4.5 * 2.6 * 3inPackage Weight: 260g/ 9.2ozNote: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 Pedal2 * Stickers1 * Users' Manual(English & Chinese)