The Dangerous Music Source gives you mastering-grade monitoring and D/A conversion whether you're on the road or in the studio. Switch between analog and digital inputs on both the headphone and speaker sides of the Source -- even combine inputs to monitor as needed. The Source gives you a Dangerous-quality DAC with AES, S/PDIF or USB input, even an 1/8" stereo input to connect your portable player, cellphone or other consumer device for on-the-fly comparisons. Small enough to slide into a laptop bag and go, you can also grab the SRK rackmount kit and install the Source into your studio permanently.