The DB1100 Active Direct Box transforms any high-impedance source into a low-impedance (XLR) signal ready to be sent long distances to a mixing board or recording console. Its active design features isolated inputs, a 15dB pad switch, ground lift switch, low cut switch, and polarity switch. The DB1100 also features a Merge function, allowing a left/right stereo signal to be input through the In and Thru jacks, thus outputting a summed mono signal. Great for any device or instrument, especially keyboards.