PYLE PRO PDC21 .25'' INSTRUMENT TO BALANCED & UNBALANCED DIRECT BOX ENABLES EASY INTERFACING; CONNECTION BETWEEN VARIOUS AUDIO GEAR IN NUMEROUS APPLICATIONS; INPUT ATTENUATION: SWITCHABLE (0 DB, -20 DB & -40 DB); INSTRUMENT INPUT: 50K UNBALANCED TS JACK; PARALLEL (LINK) OUTPUT: 50K UNBALANCED TS JACK; BALANCED OUTPUT: 600 BALANCED XLR JACK; GROUND LIFT: SWITCHABLE GROUND LIFT; CONSTRUCTION: ALL STEEL CHASSIS; DIM: 3.01"H X 4.72"W X 1.77"D