Radial Tonebone Bassbone Bass Preamp 2 Channel Built In Direct Box with XLR Output Powerful EQ Two ultra-clean signal channels with individual level controls to adjust each instrument Tuner output and a direct XLR balanced out for the PA system Channel-1 can be used flat or can be enhanced with a choice of two contour curves Channel-2 controls include instrument level and low, mid and high EQ settings Robust 14 gauge steel construction, baked enamel finish and heavy-duty foot switches