16 discrete channels of input and output, with 4-segment LED Meters to monitor input and output on each channel. Input and Output channels can include: • Eight channels of 24-bit D/A and A/D converters for superior analog input and output at sample rates of 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, and 192 kHz • Ten channels of 24-bit-supported AES/EBU I/O. Eight-channel AES/EBU I/O supports sample rates of up to 96 kHz on all channels, and of up to 192 kHz on four channels simultaneously. Two-channel AESEBU I/O supports sample rates of up to 96 kHz. • Sixteen channels of Optical I/O, through two pairs of Lightpipe (ADAT) connectors; one pair of optical ports can be switched to two channels of optical S/PDIF I/O • Two 24-bit-capable S/PDIF I/O supporting sample rates of up to 96 kHz • Real-time sample rate conversion on inputs of eight channels of either AES/EBU, Optical, or TDIF. • External Clock input and output for synchronizing 192 I/O with external 1x Word Clock or 256x (Slave Clock) devices. • Legacy Port for Digidesign-qualified Pro Tools|24 MIX audio interfaces. • Optional addition of cards to expand analog or digital I/O.