Connectors 1/4-inch TRS Balanced Phone Jacks CMRR Better than -90 dB (-95 dB typical) Channel to Channel Isolation Better than -80 dB (-95 dB typical) Enclosure Steel 1U high, 19-inch rack mount Dimensions 1.75"H x 19"W x 3.5"D (44mm x 483mm x 89mm) Weight 4.5 lbs (2.0 kg)