CAJ IN and OUT Junction Box A buffer and junction box from the Japanese brand CAJ (Custom Audio Japan). This is a practical junction box featuring independently switchable buffers for input and output, a thru-out terminal, and a function to boost the output by up to +10dB. Model: CAJ IN and OUT Connectors: DC9V IN/OUT, EFFECT RETURN, THRU, EFFECT SEND Condition: There are a few minor scratches, but I think it's a clean unit. Accessories: Stand, screws, rubber feet, adapter Instruction manual and original box included