Choose a cable that matches the source output to the equipment input: use digital coax or optical for digital audio, and HDMI for combined audio and video. For longer HDMI runs, consider an active or fiber optic option, and check its direction, power requirements, supported formats, and length before installation.

Use a shielded copper cable for shorter digital signal runs, especially when you need flexible wire management, low-profile connectors, and shielding against electromagnetic or radio-frequency interference. Choose an optical or active fiber cable for longer HDMI runs or areas with higher interference concerns, provided the cable’s connector type, direction, power requirements, and supported signal formats match the equipment.

Choose a cable length that reaches the connected equipment with a small service loop, with options ranging from 1 m and 2 m digital coax cables to 6 ft optical cables, 12 ft and 25 ft active HDMI cables, and 20 m, 30 m, and 50 m fiber optic HDMI cables. Plan clearance around the connection, especially in tight spaces, where low-profile coax connectors and flexible jackets can simplify routing and wire management.

Flexible jackets help digital output cables bend around corners and support cleaner wire management, while low-profile connectors can fit behind displays, receivers, and other equipment in tight spaces. Directional active HDMI cables require the source end to connect to the output device, so installers should plan the signal path and cable orientation before routing.