1、RETAINING ORIGINAL GUITAR TONE: Booster effect pedal with classic A circuit, bring clean and transparent boost up, retaining your original guitar tone 2、MAINTAIN THE BEST SOUND QUALITY: Excellent tone electric guitar effect pedal and real bypass provide transparent tone, minimize tone loss, so as to maintain the best sound quality 3、SMALL LED FLASH: Using classic paint finish, firm and stable, equipped with a small LED flash to indicate working status 4、EXCELLENT PERFORMANCE: Input impedance is 1MΩ, output impedance is 1KΩ, this effect pedal come with excellent performance 5、GOOD METAL MATERIAL: Guitar effect pedal is made of excellent metal material, easy to conduct electricity, shiny, sturdy and durable Item Type: Clean Boost Up Pedal Color: Yellow Material: Metal Input Impedance: 1MΩ Output Impedance: 1KΩ Working Current: 2mA Product Power Supply Mode: 1 x 9V battery 6F22(not included) or 9V power adapter(not included) 1 x Clean Boost Up Pedal 1 x User Manual