Cable Matters
Active 8K HDMI 2.1 Coupler
The Cable Matters Active 8K HDMI 2.1 Coupler functions as an electronic signal repeater, boosting your connection when joining two HDMI cables for extended runs. This device is essential for maintaining high-bandwidth signals to demanding equipment like gaming consoles, modern GPUs, and 8K displays. It supports resolutions up to 8K@60Hz and 4K@240Hz, ensuring compatibility with HDR, eARC, and HDCP 2.3. Featuring a durable aluminum housing, this coupler can be securely wall-mounted. For optimal stability, especially with weaker source outputs, an optional USB-C power connection is available.
$19.99
Owner Satisfaction
4.3
/ 5
Category Rank
1914
/ 2556
#1914 in Audio & Video Cable Adapters & Couplers
Price vs Category Average
-74%
Below average
HDMI Standard
2.1
/ HDMI
Who it's for
- Full HDMI 2.1 Feature Support
- Reliable Signal Extension
- Reputable Brand Reliability
Who should skip it
- Requires External Power
- Potential Signal Latency/Failure Point
- Higher Cost and Bulk
Key Specs
HDMI Standard
HDMI 2.1
Resolution Support
8K@60Hz, 4K@240Hz, 4K@120Hz
Max Cable Length (8K/4K@240Hz)
Up to 30ft total
Max Cable Length (4K@60Hz)
Up to 50ft total
Housing Material
Aluminum
Certifications
HDCP 2.3
Connector Gender
HDMI Female to HDMI Female
Power Requirement
Optional USB-C 5V/1A input
Features
- Electronically boosts HDMI signals for longer runs
- Supports high-end resolutions up to 8K@60Hz
- Durable aluminum housing resists wear and tear
- Wall-mountable design for clean AV setups
- Optional USB-C power input stabilizes weak signals
- Ensures seamless compatibility with HDR and eARC
- Clearly labeled Input and Output ports
- Extends reach beyond single cable limitations
What customers say
This active HDMI 2.1 coupler is highly praised for solving signal integrity issues over long cable runs, a common failure point for passive extenders. Users confirm it reliably maintains the necessary 48Gbps bandwidth, successfully enabling demanding features like 4K at 120Hz and VRR for modern gaming consoles and PCs. Reviewers express satisfaction that this unit resolves previous signal dropouts. While the required external USB power adds minor complexity, customers agree this trade-off is essential for achieving otherwise unattainable long-distance performance. The investment is viewed as justified by its successful delivery of high-performance HDMI 2.1 transmission.
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