8 x analog line I/O, 96kHz/24-bit, SNR 105dBA, 1/4" TRS jacks. 1 x ADAT digital I/O, based on RME's reliable Bitclock PLL. 1 x SPDIF digital I/O, based on RME's reliable DIGI96 technology. 1 x ADAT Sync In (9-pin D-type) for sample accurate transfers. 1 x word clock I/O (BNC). 1 x analog line/headphone output, separate output for independent submix. 1 x MIDI I/O, 16 channels high-speed MIDI. HDSP Meter Bridge: freely scalable level meters, peak and RMS calculation directly in hardware. TotalMix: 720 channel mixer with 40-bit internal resolution. S/MUX poured in hardware: 4 channels 96kHz/24-bit for record and playback via ADAT optical.