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Gray rectangular HDMI matrix switch with front buttons and multiple rear ports

SMA

SMA 4x4 HDMI Matrix Switch 4K@30Hz Gray

SKU CH-B7AY-0SD4A

Routes four HDMI sources to four displays with auto downscaling and IR remote control

  • Port count4
  • Maximum supported resolutionsThis 4K hdmi switch supports mixed 4K and 1080P output, auto
  • Units per package1
  • Product typeHDMI Switchers
  • Product colorGray
  • DetailsThis 4K hdmi switch transmits 4 hdmi input sources (such as
  • Connect four sources to four displays simultaneously
  • Auto-downscales 4K to 1080P per output independently
  • Switch via front buttons or IR remote control
  • Independent optical and stereo audio extraction per output
  • 2 Gbps bandwidth for 4K@30Hz HDR video

4×4 HDMI Matrix Switch

This 4×4 HDMI matrix switch routes four HDMI sources to four displays simultaneously. Each output can show the same content or a different source independently. It suits installers and AV enthusiasts who need flexible distribution in conference rooms, gaming centres or home theatres.

4K@30Hz with Auto Downscaling

The switch handles video up to 3840×2160 at 30 Hz and supports HDR and HDCP 1.4. A built-in downscaler converts 4K signals to 1080P automatically when a connected display cannot accept 4K, allowing mixed-resolution setups without manual configuration.

Front-Panel Buttons and IR Remote

Source selection works via tactile buttons on the unit or the included IR remote for distance operation. The package supplies a 5 V power adapter and user manual. Ensure all cables are fully seated; loose HDMI plugs are the most common cause of signal drop-out.

How it compares

Measured against everything we stock in HDMI & AV Selector Switches, at today’s prices. Recalculated every night.

Price $99.99
Pricier than about 90% of the 1,998 comparable items (median $27.99).

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Specifications

Product
Product typeHDMI Switchers
Product colorGray
Display
Maximum supported resolutionsThis 4K hdmi switch supports mixed 4K and 1080P output, automatically downscaling 4K to 1080P when needed.
Audio & video
Matrix switchingYes
Ports & slots
Port count4
Size & build
Product dimensions10.2 × 3.3 × 0.87 in
Product weight1.6 lb (0.73 kg)
In the box
Units per package1
In the box1 x HDMI seamless switching Matrix 4 × 4
1 × 5 V AC/DC Adaptor
1 x IR Remote
1 x User Manual

Questions about this item

What does the 4K@30Hz rating mean for gaming consoles or streaming devices connected to this matrix?

The switch passes 4K signals at up to 30 Hz, so 60 Hz sources will be limited to 30 Hz on every display; 1080p content can still run at 60 Hz.

Which HDMI version and bandwidth does the matrix use, and what resolution ceiling does that create?

It uses HDMI 1.4 with a 10.2 Gbps data rate and 300 MHz TMDS clock, capping 4K output at 30 Hz YUV 4:2:0 while allowing 1080p at higher refresh rates.

How much space do the 10.2 x 3.3 x 0.87 inch dimensions need on a desk or in a cabinet?

The unit is 10.2 inches wide, 3.3 inches deep and 0.87 inches high, fitting on a standard shelf with room for cable bend radius at the rear.

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