Metal Distortion Pedal Features: Experience a special and powerful distortion effect, enhancing the metal distortion degree significantly. Three versatile working modes: Hi Boost: Heavy metal distortion with significantly increased signal. Boost Off: Classic metal distortion effect. Lo Boost: Slight enhancement in high frequencies. Control your sound with precision: VOLUME knob: Adjusts distortion volume. TONE knob: Regulates the brightness of the tone. DIST knob: Fine-tunes the level of distortion. Enjoy transparent tone with the true bypass feature and a handy LED indicator to show the working state. Compact and durable design made with a high-quality aluminum alloy shell. Specifications: Material: Aluminum alloy Input: 1/4 inch Monaural Jack (Impedance: 1M Ohms) Output: 1/4 inch Monaural Jack (Impedance: 470K Ohms) Power Supply: DC 9V (Positive on the barrel and negative in the center) Working Current: 25mA Item Size: 3.8 x 9.5 x 3.5 cm / 1.5 x 3.7 x 1.4 in Item Weight: 200g / 7 oz Package Size: 12 x 6.5 x 6.5 cm / 4.7 x 2.6 x 2.6 in Package Weight: 270g / 9.5 oz Note: Please use a power adapter with the polarity of positive pole outside and negative pole inside to ensure proper operation. Package Includes: 1 x Effect Pedal 1 x User Manual (English & Chinese)