Feature: 1. No Noise, Distortion Or Hum: Analog 5 band equalizer bring clean sound, no noise, distortion or hum, stable and reliable 2. Easy To Increase Or Decrease Sound Level: Bass EQ is easy to increase or decrease the sound level of the balanced output, simple to operate 3. Classic Mini Size: This single effect come with classic mini size, convenient and durable, with beautiful shell design 4. Excellent Performance: Input impedance is 470k Ohms, output impedance for 1k Ohms, come with excellent performance 5. Sturdy And Durable: Bass equalizer pedal is made of good quality metal material, easy to conduct electricity, shiny, sturdy and durable Specification: Item Type: Bass EQ Pedal Color: Brownness Material: Metal Input Impedance: 470k Ohms Output Impedance: 1k Ohms Product Applicable Power Supply: 9V DC power adapter(not included) Size(LxWxH): Approx. 94 x 42 x 48mm / 3.7 x 1.65 x 1.89in. Package List: 1 x Effector1 x User Manual1 x Sticker 1 x Hook and Loop Fastener Note: Note that the positive and negative poles of the power supply should be the same as the positive and negative poles of the effector.