The Marmitek Connect 621 UHD 2.0 connects four HDMI devices — game consoles, Blu-ray players, decoders or any HDMI source — to a single TV input without signal loss or encryption issues. Its dedicated digital audio output lets you route sound from all connected sources to an AV receiver over one cable, independent of the video connection.

The unit supports the full HDMI 2.0b feature set including 4K60Hz at 4:4:4 chroma, High Dynamic Range, HDCP 2.2 for protected 4K content, and Audio Return Channel to eliminate lip-sync problems. A built-in repeater and equaliser corrects signal loss over longer cable runs.

Key Features

• 4 HDMI inputs (19-pin female), 1 HDMI output — switches four sources to one display
• Digital audio output: 1 x Toslink 3.5 mm optical; analogue audio output: 1 x Stereo 3.5 mm
• RS-232 connector (3.5 mm) for control via PC or control panel
• Supports 4K60 (3840x2160/60Hz), HDR, Deep Color, 4:4:4 chroma and all 3D formats
• HDCP 2.2 and HDCP 1.4 support for protected 4K Ultra HD playback
• Automatic input switching plus remote-control operation with separate IR receiver
• Built-in signal repeater and equaliser for correcting cable-length signal loss
• Solid metal housing for interference-free operation

Product Benefits

• The digital audio output allows a separate AV receiver connection with selectable audio format (2.0 / 5.1 / 7.1), removing the need for additional audio cabling
• Audio Return Channel (ARC) support enables two-way audio over the HDMI cable, preventing lip-sync issues
• 18 Gbit/s throughput and 600 MHz clock frequency handle the full bandwidth of 4K60 content at maximum quality
• HDCP 2.2 compliance allows playback of protected Ultra HD titles from streaming services and 4K Blu-ray
• The RS-232 port enables integration into home-automation or AV-control systems

Technical Specifications

• HDMI Inputs: 4 x 19-pin female
• HDMI Output: 1 x 19-pin female
• Max HDMI Cable Length: 15 metres
• Digital Audio Output: 1 x Toslink 3.5 mm (optical)
• Analogue Audio Output: 1 x Stereo 3.5 mm
• RS-232 Connector: 1 x 3.5 mm
• Supported Video Resolutions: 4K (4096x2160)@24/30/50/60Hz, 480i–1080p@50/60Hz, 1080p@120Hz and 3D@1080p/60Hz
• Supported PC Resolutions: max. QSXGA (2560x2048@60Hz)
• HDMI Standards: HDMI 2.0b, HDR, CEC, EDID, DVI, all 3D formats and Deep Color 36-bit
• HDCP Standards: HDCP 2.2 and HDCP 1.4
• Colour Formats: RGB and YCbCr 4:4:4, 4:2:0 or 4:2:2
• Colour Depth: max. 36-bit
• Throughput Speed: max. 18 Gbit/s
• Clock Frequency: 600 MHz
• HDMI Audio Formats: DTS-HD Master Audio, Dolby TrueHD, Dolby Atmos, DTS:X, Dolby Digital/AC3, DTS 5.1 and PCM stereo
• Box Contents: 1x HDMI Switcher, 1x Remote Control (battery included), 1x IR Receiver, 1x HDMI Cable, 1x Toslink mini adapter, 1x Power Adapter, 1x User Manual

Why You'll Love It

• The optical and analogue audio outputs give you flexible connection options for both modern AV receivers and older stereo amplifiers
• Automatic input switching means the TV responds to whichever device you turn on without any manual input selection
• The separate IR receiver lets you operate the switcher from anywhere in the room, even with the unit hidden behind furniture
• Solid metal housing suppresses RF interference, keeping both video and audio clean across all connected sources