This unit contains two separate DIs - input your signals with one 3.5mm (1/8") mini TRS stereo jack, color coded RCA phono jacks or 1/4" TS input jacks. The RCA and 3.5 mm jacks are wired in parallel if a through connection is required. Outputs are on the rear via 3.5 mm screw type removable plugs (Phoenix 1984329 or equivalent).