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Black rectangular HDMI splitter switch with multiple ports

Monoprice Inc.

Monoprice Blackbird 115866 4K 2x4 HDMI Splitter Switch

SKU CH-S4C4-8ZTFK

Routes two HDMI sources to four displays simultaneously with 4K@60Hz and 18Gbps bandwidth

  • Switch two sources to four 4K displays simultaneously
  • Built-in auto-adjusting amplifier enables longer HDMI cable runs
  • 18Gbps bandwidth delivers 4K@60Hz with HDR10 and Dolby Vision
  • Supports 7.1 LPCM, Dolby TrueHD and DTS-HD Master Audio
  • HDMI 2.0b and HDCP 2.2 compliant for protected 4K content

Two-Source Four-Display Switch

The Monoprice Blackbird 115866 is a 4K HDMI matrix that accepts two source devices and routes either signal to any or all of four connected displays. It combines switching and splitting in one unit so a single installer can manage multiple zones without extra hardware. The built-in automatic video amplifier compensates for longer cable runs while preserving signal integrity.

Replaces Separate Splitters And Switches

A single box now handles the job that previously required a dedicated two-input switch plus a four-way distribution amplifier. The jump is worth it when you need simultaneous output to four screens from either of two sources and want to reduce cable clutter and power outlets. It also removes the need to manually swap cables when changing the active source.

Fits Standard HDMI 2.0b Installations

The unit complies with HDMI 2.0b and HDCP 2.2, delivering up to 18Gbps bandwidth for 4K 60Hz 8-bit RGB and YCbCr 4:4:4 signals. It passes HDR10, HDR10+, HLG and Dolby Vision metadata alongside 7.1-channel LPCM, Dolby TrueHD and DTS-HD Master Audio. Basic EDID management helps maintain stable handshakes across mixed display types.

Highlights

  • Switch two sources to four 4K displays simultaneously
  • Built-in auto-adjusting amplifier enables longer HDMI cable runs
  • 18Gbps bandwidth delivers 4K@60Hz with HDR10 and Dolby Vision
  • Supports 7.1 LPCM, Dolby TrueHD and DTS-HD Master Audio
  • HDMI 2.0b and HDCP 2.2 compliant for protected 4K content

Specifications

BrandMonoprice
Series115866
Model115866
Part Number115866

Questions about this item

What physical space and connections does the 115866 need to sit near my sources and displays?

The unit provides two HDMI input ports and four HDMI output ports, so it needs to be positioned where cables from both source devices and all four screens can reach the HDMI connectors.

How is the 115866 set up, and which step do people often miss?

Connect each source to an HDMI input, connect each display to an HDMI output, then power the unit; the step people miss is confirming that every display shows a stable 4K 60 Hz image before assuming the automatic amplifier has equalised the longer cable runs.

What ongoing care or part replacement will the 115866 require over time?

No user-serviceable parts are inside; keep ventilation slots clear of dust, use only the supplied power adapter, and replace HDMI cables if they develop intermittent sparkles or audio drop-outs.

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