Morley Ebtech Line Level Shifter2 XLR, Channel box, 1x 6,3 mm jack in and out for each channel, 1x XLR in and out, HumEliminator technology, changes passive function (no power pack) between -10dBV and +4dBu in both directions, mass 3,5"L x 4,75"W x 1,5"H