DynaComp For Guitar Pedal Electric Guitars Guitar s And Accessories Music Instruments Box Sound Mixer True Bypass|Guitar s and Accessories : Electric guitar dynamic compressor effect pedal for guitar players. 2 functional knobs(OUTPUT or SENS) for adjust the performance of compression. True bypass foots for s ing between compressor and bypass status. LED light for indicating effects or bypass status. metal shell and compact size, durable and portable. s: Input: 1 or 4'' monaural Output: 1 or 4'' monaural : 9V AC adapter (center minus plug)(not included) Note: Adapter is not included. Please use the power adapter whose polarity is positive pole outside and negative pole inside. wise, the product may not work properly. Package List: 1 x Pedal Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.