HDMI eARC Extender over HDBaseT 3.0 (GF-EXT-HDe-HBT3)

GF-EXT-HDe-HBT3

When picture and sound quality truly matter, the Gefen GF-EXT-HDe-HBT3 delivers uncompromised clarity and control across long runs. Powered by HDBaseT 3.0 technology, it extends HDMI 2.0b 4K @ 60 Hz 4:4:4 8-bit video, eARC/ARC audio, optical audio, Ethernet, IR, and RS-232 up to 100 meters (328 feet) over a single CAT6a cable. With full support for HDR10, HDR10+, Dolby Vision, and HLG, plus intelligent audio management with flexible return paths — eARC, ARC, Optical Audio Return, and Optical Audio De-embedding (PCM 2CH) — it preserves studio-quality color and sound from source to display. An integrated HDMI Loop-Out with 4K-to-1080p downscaler at the transmitter, DIP-switch selectable audio routing modes, EDID management, and a built-in pattern generator streamline setup and troubleshooting for integrators. Whether in a home theater, boardroom, or broadcast suite, the GF-EXT-HDe-HBT3 is built to perform with precision — preserving every detail, frame, and frequency along the way.

❗ Includes Transmitter (TX) and Receiver (RX) units
$1,323.94
HDMI KVM HDBaseT 3.0 (GF - EXT - HDe - HBT3) - GF-EXT-HDe-HBT3 - Gefen
HDMI KVM HDBaseT 3.0 (GF - EXT - HDe - HBT3) - GF-EXT-HDe-HBT3 - Gefen
HDMI KVM HDBaseT 3.0 (GF - EXT - HDe - HBT3) - GF-EXT-HDe-HBT3 - Gefen
HDMI KVM HDBaseT 3.0 (GF - EXT - HDe - HBT3) - GF-EXT-HDe-HBT3 - Gefen
HDMI KVM HDBaseT 3.0 (GF - EXT - HDe - HBT3) - GF-EXT-HDe-HBT3 - Gefen
HDMI KVM HDBaseT 3.0 (GF - EXT - HDe - HBT3) - GF-EXT-HDe-HBT3 - Gefen
HDMI KVM HDBaseT 3.0 (GF - EXT - HDe - HBT3) - GF-EXT-HDe-HBT3 - Gefen
HDMI KVM HDBaseT 3.0 (GF - EXT - HDe - HBT3) - GF-EXT-HDe-HBT3 - Gefen
HDMI KVM HDBaseT 3.0 (GF - EXT - HDe - HBT3) - GF-EXT-HDe-HBT3 - Gefen
HDMI KVM HDBaseT 3.0 (GF - EXT - HDe - HBT3) - GF-EXT-HDe-HBT3 - Gefen

Key Features

Extended Reach: Transmits HDMI 2.0b 4K60 4:4:4 8-bit video, eARC/ARC audio, optical audio, IR, RS-232, and Ethernet up to 100 meters (328 feet) over a single CAT6a cable

 

Intelligent Audio Management: Supports eARC, ARC, Optical Audio Return, and Optical Audio De-embedding (PCM 2CH) with DIP-switch selectable routing modes. Audio formats include Dolby Atmos, Dolby TrueHD, DTS:X, and DTS-HD Master Audio

 

Integrated 4K-to-1080p Downscaler: HDMI Loop-Out on the transmitter allows simultaneous local monitoring at a lower resolution

 

Built-in Diagnostics: Pattern generator and HDCP toggle streamline system testing without external equipment

 

Bi-directional PoC (Power over Cable): Only one power supply needed — the connected unit powers the other through the CAT6a cable

 

Complete Control Integration: Bi-directional IR pass-through and RS-232 pass-through for seamless integration with control systems

 

Commercial-Grade Construction: Metal enclosure, surface-mountable with included brackets, <15W typical power consumption, firmware-upgradeable via USB-C

 

ESD Protection and Durability: +/-8kV Air Discharge, +/-4kV Contact Discharge; ISTA-1A drop test compliant

How It Works

The Gefen GF-EXT-HDe-HBT3 uses HDBaseT 3.0 technology to transmit uncompressed 4K60 4:4:4 video and multi-channel audio over a single CAT6a cable up to 100 meters (328 feet).

 

Connect your HDMI source to the Transmitter (TX) unit, which encodes the 18Gbps signal and transmits it to the Receiver (RX) at your display location. Use the HDMI Loop-Out on the TX for local monitoring — with a built-in 4K-to-1080p downscaler if your local display doesn't support 4K.

 

The system supports flexible audio return: use eARC, ARC, or Optical (S/PDIF up to 5.1ch) to send audio back from the display to the source, or de-embed PCM 2CH audio via the optical output on the transmitter. DIP switches let you select the preferred audio routing mode.

 

Bi-directional Power over Cable (PoC) means you only need to power one unit — it supplies power to the other through the CAT6a cable. Bi-directional IR and RS-232 pass-through provide full control integration, and the Ethernet port enables network connectivity at the remote endpoint.

 

LED indicators provide real-time status: Power (Blue), Link (Green), Video (Multicolor: Green/Red/Blue), and eARC (Green). An integrated pattern generator and HDCP toggle simplify testing and signal verification without external equipment.

Additional Information

Specifications

Video Bandwidth 18 Gbps

HDMI Compliance HDMI 2.0b

Max Resolution 3840×2160 @ 60Hz 4:4:4 8-bit 

HDCP Compliance HDCP 2.3 / 2.2 / 1.x 

HDR Support HDR10, HDR10+, Dolby Vision, HLG 

Audio Return Paths eARC, ARC, Optical Audio Return, Optical De-embed (PCM 2CH) 

Audio Formats Dolby Atmos, Dolby TrueHD, DTS:X, DTS-HD Master Audio 

Transmission Single CAT6a up to 100m (328 ft) 

TX Connections HDMI In, HDMI Loop-Out (w/ downscaler), Optical In, IR In/Out, RS-232, HDBaseT Out (RJ-45), Ethernet (RJ-45), 12V DC, USB-C (firmware) 

RX Connections HDMI Out, Optical Out, IR In/Out, RS-232, HDBaseT In (RJ-45), Ethernet (RJ-45), 12V DC, USB-C (firmware) 

Power 12V/2A DC; Bi-directional PoC 

Power Consumption <15W typical 

Enclosure Metal, surface-mountable (brackets included) 

Dimensions (each) 190mm × 25mm × 116mm (W × H × D) 

Operating Temp 0°C to 50°C (32°F to 122°F) 

Storage Temp -20°C to 60°C (-4°F to 140°F) 

Operating Humidity 20% to 90% RH, non-condensing 

ESD Protection +/-8kV Air Discharge, +/-4kV Contact Discharge 

Compliance ISTA-1A Drop Test, RoHS, REACH, Prop 65 

What's in the Box

  • HDMI eARC Extender Set (Transmitter TX + Receiver RX)
  • (2) 12V DC Power Supplies (Multi-region plugs: US, EU, UK, AU)
  • (2) 3-Pin Phoenix Connectors (RS-232)
  • (1) IR Receiver Cable (Gefen EXT-RMT-EXTIRN)
  • (1) IR Emitter Cable (Gefen EXT-IREMIT)
  • Mounting Ears and Screws
  • Quick Start Guide

Warranty

3 Year Product Warranty

Please see the Gefen Warranty Page for more details.

Resources

Why Choose Gefen?

For over two decades, Gefen has been the trusted backbone for the world's most demanding AV installations. Our reputation is built on rock-solid reliability and interoperability. We design and test our products to exceed industry standards, ensuring they work seamlessly right out of the box and continue to perform for years. When AV professionals choose Gefen, they are choosing:

  • Engineered for Durability: Built with high-quality components for continuous, 24/7 operation.
  • Expert Support: Access to a team of experienced AV engineers to assist with system design and troubleshooting.
  • Simplified Integration: Solutions designed to work with standard infrastructure, reducing complexity and deployment time.


We provide the critical infrastructure that empowers you to build smarter, more resilient AV systems.

Build Your Next AV System with Confidence

Stop compromising on signal integrity. Whether you are designing a campus-wide distribution network or a mission-critical control room, Gefen has the technology and expertise to ensure your project's success. Let our specialists help you select the right solution.

Contact Sales for More Information

Fill out my online form.