RME Babyface Pro FS, 24-Channel 192 kHz bus-powered interface. The FPGA-based DSP mixer adds a 3-band parametric equalizer to all inputs and outputs, with built-in reverb and delay. It is super easy to use and sounds amazing as you would expect. Comes with optional locking power supply, which is currently a ~$90 option, but comes bundled with the device. Also comes with original gold-plated USB cables and case. No scratches on the unit except for ding on the corner (shown in picture). Always used in smoke-free, climate controlled environment.