The dPDB Dual Passive Direct Box features two high-quality direct boxes in one portable enclosure. It is a rock solid roadworthy DI for connection of the outputs of electronic musical instruments (or other audio sources) to the balanced inputs of mixer consoles and other balanced inputs. It also allows connection of a music source to an instrument amplifier while simultaneously patching it to a mixer. The dPDB features switchable Input Attenuation (0 dB -20 dB -40 dB) a 50 kOhm Instrument Input 50 kOhm Parallel Link jack a 600 ohm XLR Output Jack and a switchable Ground Lift. The dPDB excels at impedance matching and improving the sound of any instrument plugged into it. The ART dPDB is a must-have in any audio tool kit. Enclosed in a rugged steel chassis it is designed and manufactured to the highest standards to provide years of quiet reliable performance.