M-Audio FW1814 Firewire Audio Interface. Firewire 1814 - Manufacturer Specifications. Check that your technology is compatible with Firewire before purchasing. Digital I/O : ADAT optical in and out switchable to S/PDIF optical, co-axial phono S/PDIF in and out (both S/PDIF outputs support AC3 and DTS formats), MIDI In and Out, two six-pin Firewire ports, word clock in and out (will sync to external word clock at sample rates up to 96kHz).
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