The effector is for both bass and guitar, with band settings from 31.25Hz all the way up to 16kHz, covering the common 4-string, 5-string bass, 6-string, and 7-string guitars, with independent output volume adjustment on the right side. Specifications: Material: Aluminum alloy Interface: 1/4" Mono audio interface Input Impedance: 1MΩ Output Impedance: 100KΩ Working Current: 30mA Power Interface: DC9V Item Size: 108 * 69 * 32mm / 4.25 * 2.72 * 1.26in Item Weight: 289g / 10.21oz Package Weight: 334g / 11.78oz Package Size: 12.5 * 8 * 5.7cm / 4.92 * 3.15 * 2.24in Package List: 1 * Effect Pedal 1 * Silicone Pad 1 * Manual (English)