4K HDMI Extender (50m) with eARC & S/PDIF Audio Return New

Standard 4K HDMI extenders carry video over CAT cable but drop the audio return path — forcing integrators to run a second cable or add a standalone audio extractor when the TV needs to send eARC or ARC audio back to an AVR or soundbar. The KanexPro EXT-HD4KEARC-50M solves this by extending 4K60 4:4:4 HDMI video and eARC/S/PDIF audio return over a single CAT6/6a cable up to 50m/164ft, delivering both video and full-resolution audio return in one compact TX/RX kit.

A dual-mode dial switch on the receiver selects eARC for TVs that support it — passing PCM 7.1 192KHz, Dolby Atmos, and DTS:X — or S/PDIF for legacy TVs, carrying PCM 2.0, Dolby 5.1, and DTS 5.1 via optical. HDMI 2.0b and HDCP 2.2 compliant with HDR10, HDR10+, Dolby Vision, and HLG pass-through. Bi-directional wideband IR, CEC pass-through, and a 4-mode EDID DIP switch round out integration, while the compact metal enclosure and dual 5V power supplies keep installation simple.

• Extends 4K60 4:4:4 HDMI video up to 50m/164ft over a single CAT6/6a cable with zero delay
• Dual-mode audio return: eARC (PCM 7.1 192KHz, Dolby Atmos, DTS:X) or S/PDIF (PCM 2.0, Dolby 5.1, DTS 5.1) — selectable via RX dial switch
• HDMI 2.0b and HDCP 2.2 compliant — supports protected 4K content from all major sources
• HDR, HDR10, HDR10+, Dolby Vision, and HLG pass-through for full dynamic range
• CEC pass-through enables single-remote control of source and display through the extender
• Bi-directional wideband IR (20K–60KHz) for remote control of source from display side or display from source side
• 4-mode EDID DIP switch: copy sink, 4K60 2.0CH, 4K60 5.1CH, or copy sink video with S/PDIF audio — resolves handshake issues without software
• Compact metal enclosure (97 × 82 × 18mm per unit) with mounting ears included — fits behind displays or inside AV closets