B-Stock, Speck Electronics X-Sum-03, 32 x 4 line mixer that can be used for external DAW summing or as a line mixer for synths, samplers, and effect returns. Any of the 16 stereo channels can be assigned to either the main stereo Mix output or the stereo Mix-B output. Connect the X.Sum to virtually any line level source: balanced, unbalanced, transformer, or transformer-less. The X.Sum has high headroom that will handle balanced signals up to +28dBu. All audio inputs and outputs are fully balanced and available on TRS connectors. 16 Stereo Line Inputs: Stereo level control, Pan/balance control, Mix assign switch that routes input channel to the main stereo mix or Mix-B stereo mix, Mono Switch, Left and right balanced TRS inputs, Master Section: Master level control, Stereo/mono switch, Monitor/Phone level provides adjustment to headphone jack and Mix-B output, Balanced TRS stereo mix output, Dimensions: 44mm x 483mm x 273mm, Weight: 6,8 kg, including BB-03 Breakoutbox, B-Stock with full warranty, may have slight traces of use