Heritage Audio P DI ONE; passive 1-channel DI box for impedance matching and balancing of an audio signal; eliminates hum and buzz caused by ground loops; HA-DI transformer with nickel core and MU-METAL shielding; -15 dB PAD switch; Ground/Lift switch; Connections: 1x 6.3 mm jack input, 1x 6.3 mm jack thru, 1x XLR output; Dimensions: 130 x 77 x 50 mm (DxWxH); Weight: 0.495 kg