1、Balanced Output Connection: The effector has a balanced output connection and a XLR audio interface for balanced signal output. 2、Change the Gain: This is an effect that can change the gain between ‑20db, 0db and 20db. 3、Grounding Switch: The effector can eliminate tinnitus or ground connection according to the landing situation of the connected equipment. 4、Metal Shell: The effector with a full metal shell has a classic mini size, convenient and durable, and beautiful in design. 5、Simple Design: The effector has a simple design and interface, high quality components, and sensitive knobs. 1 x Effector1 x User Manual 1 x Hook and Loop Fastener1 x Sticker Item Type: Fuzz Guitar Effects PedalMaterial: MetalColour: BlackInput Impedance: 1M OhmsOutput Impedance: 1K OhmsPower Supply: 9V DC Power Adapter, Negative Polarity Inside and Positive Outside (The adapter is not included)