The On-Stage DB2150 is a stereo USB direct box aht converts digital audio to discrete stereo analog XLR signals for long cable or snake runs to a mixer or PA system and offers convenient plug-and-play use with laptops and computers via USB. When connected, Mac and Windows operating systems automatically recognize the DB2150 as an available soundcard. 
 
The DB2150 is equipped with low-distortion passive circuitry, a ground-lift switch to eliminate ground-loop hum, transformer isolation switches to handle channel-specific ground-hum loops, a mono-sum switch that converts a stereo source to a mono output, and offers headphone monitoring via a 3.5mm jack. 
 
The DB2150 is built like a brick with a heavy-duty metal enclosure that can easily handle the rigors of the marching arts, protecting internal components and ensuring reliable performance.