Features: For completely eliminating cable capacitance and tone sucking. With it, your guitar will sound like it's plugged directly into your amp with a short cord. With 1/4" input & output jacks. Compact size with full metal shell, lightweight and durable. Powered by DC 9V power adapter.(not included) Specifications: Connector: 1/4" jack InputImpedance:1M OutputImpedance:150 Item Size: 5 * 5 * 3cm / 2 * 2 * 1.2in Item Weight: 84g / 3oz Package Size: 11.5 * 6.5 * 6cm/ 4.5 * 2.6 * 2.4in Package Weight: 115g / 4.1oz 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