Simplify Your Home Theater Setup Using HDMI Extender with ARC

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The last few years have witnessed the rapid development of home theater systems. With Ultra-HD TVs and new powerful audio codecs like Dolby Atmos becoming the new trend, you are more likely to enjoy a full theater experience at home. If you have a 4K TV or HDTV, A/V receiver or soundbar, you may notice that one of its HDMI inputs is labeled “ARC”. HDMI ARC can provide a two-way flow of sound between your TV and audio system via just a HDMI cable. It can be one of the best home-theater features, as it can reduce cable clutter, save more cost and simplify your home-theater setup.

However, what if your HDTV is about 40 meters/130 feet away from your AV receiver? How can you return audio signal from your TV in the living room to your AV receiver upstairs? In this case, you may need a HDMI extender with ARC function to achieve audio return at a long distance. AV Access 4KEX70-ARC-H2 is such a kind of device featuring HDMI over HDBase-T. It supports 4K@60 4:4:4 with HDR and HDCP 2.2 compliant, offering the distribution of UHD video, audio, power and IR together. It is specially designed for home applications where you need returning audio from your TV to your AV system at a long distance.

4KEX70 ARC H2 Top

Flexible Applications: ARC Mode & S/PDIF In Mode

The 4K HDMI extender is composed of a transmitter (TX) and a receiver (RX). The RX is built with a DIP switch supporting two audio output modes: ARC mode and S/PDIF in mode. They are designed for different application scenarios.

If you want to return audio signal from your TV in the living room to your AV amplifier upstairs, you can switch to the ARC mode to transfer audio from your HDTV (with ARC support, connected to the RX) back to your AV amplifier connected to the TX. Thus, you can enjoy a full theater experience upstairs with Dolby TrueHD, Dolby Atmos, DTS-HD Master Audio, etc.


If you need to transmit audio from one of your audio systems to your AV receiver in another room, you can switch to “S/PDIF In Mode” to configure auxiliary S/PDIF input, passing optical audio from the RX to the TX. The extender kit also comes with an HDMI audio de-embedding with phoenix analog connector.

4KEX70 ARC H2 Audio

Enjoy More Fun with Long Transmission Distance

In terms of transmission distance, the advanced 4KEX70-ARC-H2 extender can transmit 4K@60 4:4:4 UHD video signal up to 40m/130ft or 1080P up to 70m/230ft over Cat5e/6/7 cable. With HDCP2.2 compliant and 18Gbps bandwidth, it can support HDR10.

Due to its support of bi-directional PoC, only one power adapter is needed at either TX or RX side to power them both. And bi-directional IR allows you to control both HDMI source and display at remote side, offering you more convenience. What’s more, it also supports CEC, RS232 pass-through, etc.

In conclusion, 4KEX70-ARC-H2 HDMI ARC extender offers a simple and reliable solution for your home theater system. Now it is easier than ever to achieve a two-way flow of sound between your TV and home theater system at a long distance.

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