SKU: 16473927726

Key Digital KD-S4x1X-3 4K/18G HDMI Switcher With Auto-Switching And Audio De-Embedding

$148.05 $164.50
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Description

Key Digital KD-S4x1X-3 4K/18G HDMI Switcher With Auto-Switching And Audio De-EmbeddingThis 4x1 4K HDMI Switcher with Auto Switching and Audio De Embedding from Key Digital is a high performance, four input HDMI switcher that supports up to DCI 4K30 12 bit 4: 4: 4 video or up to DCI 4K60 8 bit video. It also accepts SD and HD video over HDMI as well as VESA resolutions such as VGA, SVGA, XGA, WXGA, SXGA, and UXGA while supporting a maximum data transfer rate of 18 Gb s. It supports HDR10 (High Dynamic Range), which allows the unit to

This 4x1 4K HDMI Switcher with Auto-Switching and Audio De-Embedding from Key Digital is a high-performance, four-input HDMI switcher that supports up to DCI 4K30 12-bit 4:4:4 video or up to DCI 4K60 8-bit video. It also accepts SD and HD video over HDMI as well as VESA resolutions such as VGA, SVGA, XGA, WXGA, SXGA, and UXGA while supporting a maximum data transfer rate of 18 Gb/s. It supports HDR10 (High Dynamic Range), which allows the unit to pass signals with a greater range of luminance values than an SDR signal.

The KD-S4X1X-3 features front-panel control, CEC-passthrough as well as IR control using the included IR remote control unit. It is HDCP 2.2 compliant and features 15 selectable EDID handshakes available in addition to the native EDID data that the switcher copies from the connected output display. The full buffer system manages TMDS reclocking/signal regeneration, HDCP authentication to source and display, and EDID control handshake. The switcher supports a variety of lossless compressed digital audio formats, including Dolby and DTS. Auto-switching with hot plug detection enabled (Forced HPD) allows the switcher to automatically switch to a new input when it is connected to a hot video signal.

HDMI Switching
Switch four HDMI sources to one HDMI output

4K Support
Support for up to DCI 4K (4096 x 2160) or UHD 4K (3840 x 2160) at 24/25/30/60 Hz and 4:4:4 (signals up to 18 Gb/s bandwidth)

HDCP Support
Fully licensed and compatible with HDCP 2.2

High Dynamic Range
Supports HDR10 (High Dynamic Range) levels for more life-like images through a greater range of luminance levels

Resolution Support
Supports all SD, HD, and VESA (VGA, SVGA, XGA, WXGA, SXGA, and UXGA) up to 4096 x 2160

Deep Color Support
Support for up to UHD 4K30 Hz 4:4:4 12-bit or UHD 4K60 4:4:4 8-bit

Audio De-Embedding
Audio of the selected HDMI input is output at the digital optical and analog 3.5mm stereo connectors

Auto-Sensing
Automatic selection of newly detected source and switching from newly disconnected source via hot plug detection voltage when enabled

Full Buffer System
Manages TMDS re-clocking/signal regeneration, HDCP authentication to source and display, and EDID Control handshake

EDID Management
Internal library with 15 internal EDID handshakes, including 4K with HDR are selectable via a front rotary knob. These selections are in addition to native EDID data copied from the output/display
Lossless Compressed Digital Audio
Supports Dolby TrueHD, Dolby Digital Plus, DTS-HD Master Audio, and Dolby Atmos

CEC Passthrough
Passthrough is supported from a connected display to a selected HDMI source

Control
Front-panel buttons/LEDs or Optical IR Control System

Power
The included power supply features a locking-type power connector to the switcher

Features
  • 4 HDMI Inputs to 1 HDMI Output
  • Support up to DCI 4K30, 4:4:4/12-Bit
  • 18 Gb/s Bandwidth, Supports VGA to UXGA
  • Optical/3.5mm Audio Embed/De-Embed
  • HDR10 Support, Deep Color Support
  • Front-Panel Button and IR Remote Control
  • HDCP 2.2 Compliant, EDID Support
  • Full Buffer System, CEC Passthrough
  • Hot-Plug Detection On/Off Switch

Specifications

Processing
Switching Type
Pushbutton
Processing Resolution
DCI 4K at 30
Color Processing
12-Bit 4:4:4
Input
Video Inputs
4x HDMI Female
Input Video Format
HDMI (8/12-Bit 4:4:4)
DCI 4K at 60 fps
Embedded Audio Input
HDMI (per Input)
Output
Video Outputs
1x HDMI Female
Output Video Format
HDMI (8/12-Bit 4:4:4)
DCI 4K
Audio Outputs
1x 1/8" / 3.5 mm TRS Stereo Analog Female
1x TOSLINK S/PDIF Female
Output Audio Format
Analog
S/PDIF
Embedded Audio Output
HDMI
Connectivity
Digital Audio Decoding
Dolby Atmos, Dolby Digital Plus, Dolby TrueHD, DTS, DTS-HD
HDCP Support
Yes: Version 2.2
HDR Support
Yes: HDR10
Hardware
OS Compatibility
macOS / Windows / Linux
Wireless
No
Power
Power I/O
1x Barrel (5 VDC at 1 A) Input
General
Certifications
CE, RoHS, WEEE
Dimensions
7.7 x 3.5 x 0.8" / 19.6 x 8.9 x 2 cm
Weight
14.4 oz / 408 g
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 16473927726

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4.5 ★★★★★
Based on 25 reviews
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Product Reviews
J
Verified Purchase
James
Lowell, US
★★★★★ 5
Very Powerful Frother!!
Color: White
I’ve been using a frother daily for my drinks, and this one really impressed me with its power for such a compact size. It blends heavier powders into smooth, clump-free mixtures in seconds. I’m a big fan of the build—the metal whisk gives it a solid feel, and it comes with a stand to keep it neat on the counter instead of being shoved in a drawer. Cleaning is a breeze, just a quick rinse, and the rechargeable battery lasts much longer than I anticipated between charges. Just a little tip: start in a taller cup and don’t fill it all the way to the top, as this thing can create a serious vortex if you’re not careful. Overall, it’s been a super handy little tool, and I’m so glad I bought it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
J
Verified Purchase
JMB
Cuba, US
★★★★★ 5
Mixes my protein shake powder
Color: Blue
My husband and I both drink protein shakes daily. We have vortex mixers that work great, but they are plastic and getting old, and really needed to be replaced. In an effort to reduce microplastics in our lives, I am trying to use less plastic mixing cups. I couldn't find anything small enough (other than regular blenders) with glass and metal parts that would work well for us. During my search on here, several frothers showed up. This one caught my eye because of the amount of sales, quick delivery, and of course, decent pricing. Some of the reviews had me a little skeptical, and time will tell regarding the longevity, but so far I am pleased. My protein powders are on the heavy side, but this little frother really gets the job done. Instead of having to use separate mixing cups (saving me on dishwashing), I just use my morning coffee cup (it's big enough) to mix my protein shake in. My husband just uses a regular glass. Neither of us can believe the power this little thing has. We are getting smooth shakes! Here is what I really like about it: It is powerful and mixes well; the frother is metal and not plastic; it cleans extremely easy; after making several shakes the battery has not died; can be used in glasses, coffee cups, even disposable cups (when we buy donut shop coffee); and I love the little stand which takes up barely any counter space. Less plastic, less clean-up, dependable (so far), and small, making it convenient even for travel. I'm really glad I got this, and hope it will last. One last thing, do not turn it on while cleaning under running water. (Yes, you can laugh.)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 20, 2026
D
Verified Purchase
David A.
Natrona Heights, US
★★★★★ 5
Powerful frother with a long rechargeable battery life
Color: Black
After purchasing three of the battery operated frothers. I finally found this amazing frother. It is very powerful so you do have to be careful not to slosh liquid out of your cup when you’re using it. But I have found it helps if you rotate the frother in a stirring motion while you are using it. That really helps keep the liquid from overflowing out of the cup. It has a sleek design and is rechargeable and the charge less about two weeks.I love this one so much. I take it with me when I travel. I actually left my original one at my mother’s house the last time I visited her and have ordered another one for my house. Highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
M
Verified Purchase
MJFinds
Belleville, US
★★★★★ 5
Great Power and Creamy Foam
Color: White
This frother is amazing and has really good power. It creates creamy, smooth foam in seconds and works perfectly for iced lattes, cappuccinos, and matcha. I love that it’s rechargeable and lightweight, but still feels strong and high quality. As someone who loves coffee, this has become one of my favorite tools for making café-style drinks at home. Easy to use, easy to clean, and looks beautiful on my coffee station.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
D
Verified Purchase
Desert hiker
Dallas, US
★★★★★ 4
Powerful easy to operate but splashes
Color: Black
Excellent frother--Very powerful and easy to turn on/off with one button. The only downside is it requires a deep container in which to froth. The frothing pitcher I had was too small and milk splashes everywhere. There is no lower speed so it works fast. I am using a deep insulated container now for frothing. Otherwise, very quite, easy to operate no pushing down on the top like other frother wands. I love it as long as I can control it to limit the splashing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026

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