Nady PB-48 48 Point Modular Patchbay PB48 Power Supply: ~115V(60Hz)/~230V(50Hz) select switch and fused IEC power cord connector Eight totally independent DI Box units in a 1U package for multiple signal corrections/conversions 1/4"TRS jacks for balanced or unbalanced inputs XLR jacks for servo-balanced outputs for each channel Each DI box eliminates impedance mismatch problems Can also be used simultaneously as an 8-channel Line Mixer with both stereo Line and Master outputs. Multi-purpose design enables useful parallel-operation Independent rotary volume and L/R pan controls per channel Independent 20dB PAD and Ground Lift switches per channel control both the DI Box and Line Mixer outputs simultaneously Optimum hookup flexibility with independent parallel link outputs for each channel Advanced circuit design and carefully selected components High-quality, rugged construction for maximum long life and reliability Shielded internal dual regulated power supply Versatile, no-solder patchbay provides 48 points in a single rack space (1U) Normalled, half-normalled and isolated configurations Dimensions: 1.75" x 19" x 8.5"