Radial : SW8-USB
USB-Pro is a DA converter and DI box in one. It is an elegant solution for professional computer sound systems; just connect it via USB Type-B and
RADIAL ENGINEERING USB Pro
Radial USB-PRO Stereo USB - Computer Digital DI Box - Audio
ART USB DI USB to Transformer Balanced XLR Analog
Radial Engineering, Radial Active & Stereo Direct Boxes
The Radial USB-Pro is a high-resolution stereo direct box designed to convert sound files from a laptop computer and seamlessly transfer them to a pair of balanced audio outputs to feed a PA, recording or broadcast mixing console. Made to be plug and play easy to use, the USB-Pro automatically configures itself for use with all popular operating systems including Mac OSX, Windows XP, Vista and Windows 7, thus eliminating the need to load special drivers.
Radial USB Pro Stereo USB Laptop DI Line Isolator
Radial ProMS2 Passive 2-Way Microphone Splitter
Radial Engineering USB Pro Digital Stereo DI for Laptops Overview
Radial Engineering USB-Pro Stereo Laptop Direct Box
USB DI Direct Boxes with (SPARK) USB output? - Gearspace
ART USB DI USB to Transformer Balanced XLR Analog
Radial Radial USB Pro balanced audio DA converter