Name: 48Gbps 8K 2×4 HDMI Matrix Splitter with Independent Downscaling & Audio De-embedding
Brand: KanexPro
SKU: SP-HDMI2X4-8K

Question 1

How do I access RS-232 or API control?

Accepted Answer

Connect the RS-232 port (3-pin 3.5mm Phoenix) or the SERVICE USB Type-C port to a PC and open a serial terminal to send API commands for routing, EDID, and audio control.

Question 2

What is the maximum resolution, chroma, and refresh rate the SP-HDMI2X4-8K supports, and what HDMI/HDCP version does it use?

Accepted Answer

The splitter is HDMI 2.1 and HDCP 2.3 compliant, supporting up to 8K@60Hz at 4:2:0 12-bit, 8K@30Hz at 4:4:4 12-bit, and 4K@120Hz at 4:4:4 12-bit, at up to 48Gbps video bandwidth.

Question 3

What HDR formats and gaming features pass through the splitter?

Accepted Answer

It passes HDR10, HDR10+, Dolby Vision, and HLG, along with ALLM and VRR for low-latency gaming and cinematic playback.

Question 4

What control methods are supported for integration with a control system?

Accepted Answer

The splitter is controlled from front panel buttons, the included IR remote, RS-232 (3-pin 3.5mm Phoenix connector), or API commands over the same RS-232 connection.

Question 5

How is EDID configured on the SP-HDMI2X4-8K?

Accepted Answer

A front panel 4-position EDID DIP switch selects among 16 EDID presets via binary combinations; advanced EDID management also supports 2 user-defined slots and a pass-through mode.

Question 6

What is included in the box?

Accepted Answer

The package includes the 48Gbps 2x4 HDMI matrix splitter, a 12V/1A multinational locking power supply, an IR remote, a 1.5m IR wideband receiver, a 3-pin 3.5mm Phoenix connector, a 5-pin 3.5mm Phoenix connector, two mounting ears, four KM3x6 machine screws, and a user manual.

Question 7

What are the physical dimensions and weight for rack or shelf placement?

Accepted Answer

The unit measures 8.66 in (W) x 4.33 in (D) x 0.85 in (H) (220mm x 110mm x 21.5mm) and weighs 1.37 lbs (620g), with included mounting ears for rack or surface installation.

Question 8

No video appears on one or more displays. What should I check?

Accepted Answer

Confirm HDMI Ultra High Speed cables are used and do not exceed 3m for 8K/4K120 signals. Try setting the EDID DIP switch to match the display's native resolution, and if displays have mixed resolutions, use set output x downscale 2 to force 1080p on the affected outputs.

Question 9

There is no audio from the optical or analog output. What should I check?

Accepted Answer

Verify the source is outputting audio in a supported format; for optical, confirm the connected device supports LPCM/Dolby/DTS up to 5.1CH. For analog, check the gain setting with set analog gain and confirm balanced wiring (L+, L-, GND, R+, R-) or unbalanced wiring (L+, GND, R+) is correct.

Question 10

What deployment scenarios suit the SP-HDMI2X4-8K?

Accepted Answer

It fits professional installs needing two switchable 8K-capable sources routed to four displays with independent per-output downscaling and HDR-to-SDR conversion, such as command centers or AV rooms mixing 8K and legacy displays.