Move digital audio where the rack design demands it. SIIG CE-AU0411-S1 extends coaxial and TOSLINK signals up to 990 ft (300 m) over Cat cable, making it easier to separate source gear from displays, amplifiers, or distributed audio endpoints. For conference rooms, classrooms, and commercial AV spaces, that distance matters: it reduces cable clutter, simplifies routing, and preserves a dependable digital path across longer runs. This extender is built for installations where audio transport has to stay predictable. By converting the signal to run over Cat cabling, it gives integrators more freedom in equipment placement than direct-run coaxial or optical cabling can offer. That flexibility is especially valuable in retrofit projects, equipment closets, and multi-room environments where pulling new specialty cable is costly or impractical. When the job calls for long-distance digital audio distribution, this SIIG model delivers a focused solution. It is the kind of accessory that earns its place in a professional AV bill of materials: purpose-built, installation-friendly, and suited to systems where signal reach and clean deployment are worth paying for.