Stereo Direct Box.
The Mackie MDB-USB Stereo DI Box is an innovative bus-powered device that allows you to transfer digital audio from your computer to your analogue gear. Equipped with a high-resolution 24-bit/96kHz audio interface and a distortion-free stereo DI solution, the MDB-USB converts the digital audio from your PC and outputs it via the box's stereo balanced low-impedance XLR outputs. The MDB-USB features a dedicated output level control, as well as a headphone output for intuitive monitoring, whilst a mono switch allows you to sum signals for exceptional versatility. With Mackie's highly-regarded build-quality, the MDB-USB is designed with high performance and reliability in mind.