The Dual RDB has two high quality isolation transformers that prevent ground loops when connecting various systems together.
The Dual RDB accepts 1/4" TRS and XLR line level inputs and outputs mic or instrument levels. The Dual RDB's variable level controls allow volume control to be set at the source rather than in the studio, AV room, audio closet or installation rack. A 20Hz to 20kHz frequency response ensures the Dual RDB will function transparently with any high quality audio source.