Alfatron MUK44N



The ALF-MUK44N is a 4×4 compact HDMI matrix switcher, specially designed for cost conscious projects and buyers. It features not only basic functions like cross-point switching and control (IR, RS-232 and IP), but also advanced functions such as auto-downscaling for each HDMI output when it is connected to 1080P display. There is a SPDIF audio breakout for each HDMI output, to provide more audio feeds to multi-zone audio system.


  • 4 HDMI Inputs and 4 HDMI Outputs.
  • All HDMI inputs and outputs support HDMI with HDR formats, including HDR 10, HLG, DOLBY VISION up to [email protected] 4:4:4.
  • 2 compliant.
  • With built-in 4K-1080P downscaling for each HDMI Output, the matrix can downscale [email protected] 4:4:4 to [email protected] 4:4:4. 4K downscaling works automatically when the matrix is connected to a 1080P display and can be set to ON/OFF by API commands.
  • Each HDMI output has a SPDIF audio breakout and supports formats up to 5CH HBR (High Bit Rate) or 2CH PCM audio.
  • Supports smart EDID; each input can be assigned to smart EDID mode.
  • Supports EDID presets, EDID copy and EDID write. By default, each input EDID is set as [email protected] 4:4:4 HDR with 5.1CH encoded audio.
  • Supports audio mute as the four SPDIF outputs can be muted separately by API commands.
  • Supports upgrading firmware via both micro-USB and web UI (for MCU and web module).
  • Rich control options, including RS-232, IR, IP Control and front panel buttons control.


Input/Output Port 4 x HDMI In, 4 x HDMI Out, 1 x RS-232,

1 x IP Control (RJ45), 4 x SPDIF Out (Digital),

1 x FW (Micro USB), 1 x DC 12V IN

Input/Output Signal Type HDMI with [email protected] 4:4:4, HDR 10, HLG & Dolby Vision, HDCP 2.2

Note: Dolby vision is not supported in down scaler mode.

Input/Output Resolution Supported VESA:

800×6008, 1024×7688, 1280×7688, 1280×8008, 1280×9608, 1280×10248,1360×7688, 1366×7688, 1440×9008, 1600×9008, 1600×12008, 1680×10508,1920×12008


720x576P6, 1280x720P6,7,8, 1920x1080P2,5,6,7,8, 3840×21602,3,5,6,8, 4096×21602,3,5,6,8

2 = at 24 Hz, 3 = at 25 Hz, 5 = at 30 Hz, 6 = at 50 Hz, 7 = at 59.94 Hz, 8 = 60 Hz

Audio Format HDMI IN/OUT: Fully supports audio formats in HDMI 2.0 specification, including PCM 2.0/5.1/7.1, Dolby TrueHD, Dolby Atmos, DTSHD Master Audio and DTS:X

S/PDIF OUT: Supports PCM 2.0/5.1, Dolby digital and DTS up to 5.1 Channel

Maximum Data Rate 18Gbps
Control Method Front Panel Buttons, RS-232, IR, IP (Telnet &Web UI)
Operating Temperature 0°C to 45°C (32°F to 113°F)
Storage Temperature -20°C to 70°C (-4°F to 158°F)
Humidity 10% to 90%, non-condensing
ESD Protection Human-body Model:

±8kV (Air-gap discharge)/

±4kV (Contact discharge)

Power Supply DC 12V 2A
Power Consumption (Max) 10.8W
Device Dimension

(W x H x D)

215mm x 42mm x 120.2mm/8.46” x 1.65” x

4.73” (Without mounting brackets)”

Product Weight 0.54kg/1.19lb



Technical Sheet

User Manual

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