Great for active instruments like guitars and basses with active pickups and preamps, the MDB-1A Active DI features increased headroom and distortion-free operation. Featuring a 1/4" high-impedance input and thru with -20db pad plus a Merge switch that turns the Thru jack into a second input, perfect for summing a stereo source to a mono output. The balanced XLR output features features switches for Polarity, Low Cut and Ground Lift. For maximum convenience, the MDB-1A is powered by 48v phantom power. Features at a Glance Active circuitry offers higher headroom for ultra-low noise and distortion-free performance High-impedance 1/4" input with Thru output Balanced XLR output connector with Ground Lift Low Cut and Polarity switches Merge switch allows connection of stereo sources which are then summed to mono at the output perfect for stereo sources like keyboards and media players -20dB pad ensures distortion-free performance when connecting to high-level sources Power via 48v Phantom Power Built-Like-A-Tank construction The Perfect Match High output instruments will appreciate the extra headroom in the MDB-1A.? Premium Analog Circuitry MDB Series direct boxes offer excellent noise performance and transparency. Whether you are in the studio or performing on stage, your instruments will always sound as good as they do at the source. Built-Like-A-Tank™ From the inside out, MDB Series direct boxes are built to last. Thick steel chassis, impact resistant corners, and long-wearing jacks will keep these in your bag for years to come. Mackie Item No. 2049173 From the studio to the stage, Sam Ash Direct has you covered with the latest gear and accessories. With our many decades of experience and efficient order processing, your satisfaction is guaranteed!