ART Dual RDB Dual Reamping Direct BoxThe Dual RDB is the ideal interface solution for any application where stereo or dual line level signals from recording interfaces, computers, mixers, iPods, consumer audio or video machines need to be connected to XLR microphone or 1 4 inch instrument level inputs. The unit 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