Active direct box, supports 48V phantom power, battery-powered, UNBALANCED input. - Model Name: CDI-1A - Type: Active Direct Box - Input Terminals: UNBALANCED - Input Impedance: 1MΩ - Output Terminals: BALANCED OUTPUT - Output Impedance: 600Ω - Attenuator: -20dB attenuation (with PAD switch) - Power Supply: External power supply ※The screw for the 9V battery compartment in photo 1 is broken. It has been reinforced with adhesive because it was only used with phantom power. Therefore, the screw does not turn. If you force it out, it can be powered by a 9V battery. For this reason, the price has been slightly reduced. It has hardly been used and has become an ornament, in near-mint condition. Operation confirmed.