High-quality single-channel passive direct box/interface that allows for connecting instrument, line or speaker-level signals to a mixer or other balanced input through a high-performance audio isolation transformer. High-impedance single-ended 1/4" input is converted by the transformer into an isolated balanced low-impedance signal output. Interface has an extremely flat and wide frequency response which ensures a very clean and neutral sound with wide variety of signal sources and over long signal runs in high noise environments. It also features Input Attenuator switches that allow for a wide range of signal levels, Input Thru for tapping off the signal chain, Ground Lift switch that allows for complete separation of input and output signal grounds, switchable low-pass Bessel Filter that cuts out all very high frequency interference and reduces any digital computer noise, and Phase Invert switch for switching signal polarity right at the source. Rugged anodized all aluminium case is equipped with XLR connectors for balanced outputs. Dimensions: 44.5 x 107 x 89 mm. Weight: 350 g. Black colour.