The BOSS DI-1 is a high-quality direct box with an auto power function. - Model: DI-1 - Output Terminals: UNBALANCE OUT, PARA OUT - Balanced Output Terminal: BALANCE OUT (XLR) - Power: AUTO POWER ON/OFF - ATT Switch: -40dB, -20dB - Country of Manufacture: Japan I purchased this new around June. It works perfectly. I was using it for recording, but I'm selling it due to the introduction of a microphone preamplifier. Ideal for bass. Thank you for looking.