Name: 4×4 HDMI 2.0 Matrix Switcher with Independent Analog Audio Outputs
Brand: KanexPro
SKU: HDMX44A-18G

Overview

Standard 4×4 HDMI matrices route video — but when integrators need analog audio at every display zone, they're forced to add external DACs or audio extractors per output, complicating rack design and increasing BOM cost. The KanexPro HDMX44A-18G eliminates that with a high-quality DAC analog stereo 3.5mm output paired to each of its four HDMI outputs, delivering clean LPCM 2.0 analog audio directly to powered speakers or amplifiers without additional hardware.

Supporting 18Gbps bandwidth and resolutions up to 4096×2160@60Hz (4:4:4, 8-bit) with 16-bit Deep Color and HD bitstream pass-through, this matrix handles every current 4K source standard. Comprehensive EDID management covers 6 internal presets, 4 sink-learned EDIDs, and 4 user-uploaded EDIDs. OSD custom text overlay, 4 routing presets, and a full control suite — WebGUI, Telnet, RS-232, and IR — make it ideal for corporate AV, education, and demanding multi-display installations.

Key features

HDMI 2.0, HDCP 2.2/1.x, and DVI 1.0 compliant — 18Gbps on all ports
Resolutions up to 4096×2160@60Hz (4:4:4, 8-bit); 16-bit Deep Color to 1080p60
High-quality DAC analog stereo 3.5mm output on each HDMI output (LPCM 2.0 sources)
HDMI audio pass-through: LPCM up to 8 channels and HD bitstream (Dolby TrueHD, Dolby Atmos, DTS-HD Master Audio, DTS:X)
14 EDID modes per input: 6 internal, 4 sink-learned, 4 user-uploaded
OSD custom text overlay per output — position, size, color, and background transparency adjustable
4 routing presets — save/recall via front panel, WebGUI, Telnet, or RS-232
CEC send commands per output: Power On/Off, Volume +/−, Mute
Video mute (blank) per output — analog audio unaffected when video muted
Control via front panel (LCD), WebGUI, Telnet, RS-232 (19200 baud), and IR remote

Specification
Technical
HDMI Bandwidth	18 Gbps
Input Ports	4× HDMI Type A
Output Ports	4× HDMI Type A • 4× Analog Stereo (3.5mm)
Control Ports	1× RS-232 (DE-9) • 1× Ethernet (RJ-45) • 1× IR Extender (3.5mm)
Service Port	1× USB 2.0 Type A
IR Frequency	38 kHz
Baud Rate	19200
Analog Audio
Max Audio Level	2Vrms
THD+N	<−60dB@0dBFS 1kHz (A-wt)
SNR	>70dB@0dBFS
Frequency Response	<±3dB@20Hz–20kHz
Impedance	470Ω unbalanced
Mechanical
Housing	Metal (Steel), Black
Dimensions	17.24″ × 1.93″ × 10.59″ (438 × 49 × 269mm)
Net Weight	6.59 lbs (2.99kg)
Power Supply	DC 24V/2.7A (CE/FCC/UL certified)
Power Consumption	34W
ESD Protection	±8kV (Air) • ±4kV (Contact)
Operating Temp	32°F–104°F (0°C–40°C)
Storage Temp	−4°F–140°F (−20°C–60°C)
Relative Humidity	20–90% RH (non-condensing)
Certifications
Regulatory	CE • FCC • UL
Cable Length
1080p (8-bit)	Up to 50 ft (15m)
4K@30Hz (4:4:4, 8-bit)	Up to 16 ft (5m)
4K@60Hz (4:4:4, 8-bit)	Up to 10 ft (3m)
Package Contents
1×	4×4 HDMI Matrix with Audio Outputs
1×	24V/2.7A DC Power Adapter
1×	IR Remote (CR-177)
2×	Rack Mount Ears
4×	Shockproof Feet
1×	Operation Manual

4×4 HDMI 2.0 Matrix Switcher with Independent Analog Audio Outputs panel drawing

4×4 HDMI 2.0 Matrix Switcher with Independent Analog Audio Outputs system diagram

4×4 HDMI 2.0 Matrix Switcher with Independent Analog Audio Outputs applications

Manual~~Installation and operation~~

Spec sheet~~Full specification~~

Sales sheet~~For bid packages~~

What is the maximum resolution and color depth of the HDMX44A-18G?

Resolutions up to 4096x2160@60Hz (4:4:4, 8-bit), with 16-bit Deep Color supported up to 1080p60, at an 18Gbps bandwidth on all ports.

What audio does the analog 3.5mm output carry?

Each of the four analog 3.5mm outputs is a DAC stereo output carrying LPCM 2.0 audio, with a max level of 2Vrms and SNR greater than 70dB@0dBFS.

What control methods are available on the HDMX44A-18G?

Front panel LCD, WebGUI, Telnet, RS-232 (19200 baud), and IR remote (CR-177).

Can routing configurations be saved and recalled remotely?

Yes, up to 4 routing presets can be saved and recalled via front panel, WebGUI, Telnet, or RS-232.

What connections are on the rear panel?

4x HDMI inputs, 4x HDMI outputs each paired with a 3.5mm analog stereo output, 1x USB-A service port, 1x RJ45 Ethernet, 1x RS-232 DE-9, 1x 3.5mm IR input, and 1x DC 24V power input.

How is the HDMX44A-18G powered?

Via the included 24V/2.7A DC power adapter; power consumption is 34W.

There is no analog audio from the 3.5mm output, what should I check?

The analog output carries LPCM 2.0 only. Set the source to output PCM stereo audio, since bitstream formats such as Dolby and DTS do not convert to the analog output.

How do I access the WebGUI?

Connect the CONTROL (RJ-45) port to your network and navigate to 192.168.1.50 in a browser. Log in with admin/admin.

What advantage does the HDMX44A-18G offer for zoned audio distribution?

Each of the 4 HDMI outputs includes a paired 3.5mm DAC stereo output, delivering LPCM 2.0 audio directly to powered speakers or an amplifier without requiring an external DAC per zone.

Why choose the HDMX44A-18G for rooms with OSD branding or channel labeling needs?

It supports custom OSD text overlay per output, with adjustable position, size, color, and background transparency.

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