Specifications: Type: Type 1: pedalboard400*130*40mm/ Type 2:pedalboard370 *274 *40mm/Type 3:pedalboard470 *270 *40mm/ Type 4: Only Bag Material : Alloy(Type 1-3)/Canvas(Type 4 #xff09; Color: Black Packagesize:Type 1:400*130*40mm/ Type 2: 370 *274 *40mm/Type 3: 470 *270 *40mm/ Type 4:330 *320 *20mm Packageweight:Type 1:650g/ Type 2: 1190g/Type 3: 1500g/ Type 4:530g How to use #xff1a; 1. First you need to have two guitar connection lines, one connect electric guitar, and then connect the INPUT port of the Pedalboards effects . 2. Another guitar connection lines,connect the Electric Guitar Pedal C-ase Board INPUT and Output of the guitar c-ase. 3. Balance of the speaker to the middle of the whole, GAIN to the smallest, the v-olume is closed to the minimum, 4. Open the speaker and Pedalboards effects of the p-ower switch,knob to open the v-olume to middle. 5. Slowly opened the speaker voice, adjustment to the appropriate v-olume 6. Adjust the GAIN knob, step on the pedalboards effects and sound can be selected you need. Note: This Guitar Pedal Board is not with the p-ower jack Packinglist: 1Set *Guitar Pedal Board 1Set * Accessories/ 1 *Bag