Name: HDBaseT 3.0 4K HDMI Extender Kit with eARC and USB 2.0 - 328ft
Brand: KanexPro
SKU: EXT-HDBT3ARC-100M

Question 1

Does the eARC support Dolby Atmos?

Accepted Answer

eARC mode passes the TV's audio (including Atmos via eARC-compatible TVs) back to the transmitter side. SPDIF output is limited to 5.1CH in eARC mode.

Question 2

What are the six audio switching scenes?

Accepted Answer

The extender supports eARC, ARC, and SPDIF modes combined with LOOP OUT or AUDIO ONLY on the transmitter HDMI OUT — yielding six distinct routing configurations for flexible audio integration.

Question 3

Can I connect this to an AV receiver or soundbar at the source side?

Accepted Answer

Yes. In eARC/ARC mode, audio returns from the receiver-side display to the transmitter HDMI IN, HDMI OUT (audio only), and SPDIF OUT ports for connection to amplifiers or soundbars.

Question 4

Does the USB support KVM applications?

Accepted Answer

Yes. USB 2.0 at 350Mbps supports keyboard, mouse, webcam, and USB storage in Host or Device mode — configurable via a physical switch on both TX and RX.

Question 5

What cable do I need?

Accepted Answer

CAT6A or CAT7 shielded, terminated with standard RJ45. Maximum 100m/328ft. Premium High Speed HDMI cables recommended for source and display connections.

Question 6

Can I use one power supply for both units?

Accepted Answer

Yes — bi-directional 24V POC means one 24V/1A adapter powers both the transmitter and receiver over the CAT cable. Connect to either unit.

Question 7

No audio output from the transmitter?

Accepted Answer

Verify the SELECT button is set to the correct mode (ARC or SPDIF). Check the LOOP OUT/AUDIO ONLY switch position. Ensure eARC/ARC is enabled in the display settings.

Question 8

Link LED is flashing or off?

Accepted Answer

Flashing indicates Low Power Mode — verify CAT cable is properly terminated and within 100m. Off means no connection — check cable continuity and RJ45 termination.

Question 9

Why choose this over a cheaper HDMI-over-CAT extender?

Accepted Answer

Low-cost extenders compress video (H.264/265) introducing latency and artifacts. HDBaseT 3.0 passes uncompressed 4K@60 4:4:4 with zero-frame latency, plus eARC, USB, and control signals.

Question 10

Can I use the Ethernet pass-through for network access?

Accepted Answer

Yes. The 1GbE Ethernet port on both TX and RX provides full Gigabit network connectivity for displays, PCs, or control systems at both ends of the CAT cable run.