Passive 1-channel DI box, black. 1 high-impedance signal input, 6.3 mm jack, 1 low-impedance XLR output, 1 instrument feed-through output, 6.3 mm jack. Converts an unbalanced line input (e.g. instruments) into a balanced XLR output for connecting a mixer. Switchable input attenuation: 0 dB, -20 dB,