RME HDSP 9652 PCI Soundcard for sale. HDSP 9652 offers 3 x ADAT optical I/O, ADAT-Sync In, SPDIF I/O and word clock I/O. On top, there are 2 MIDI I/Os and TotalMix, a DSP-based real-time mixer/router, with hardware-calculated level metering and complete MIDI remote capability.