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Description
Key Digital KD-PRO4x1X-3 4K/18G HDMI Switcher With Auto Switching And Audio De-EmbeddingThe Key Digital 4x1 4K 18G HDMI Switcher is a high performance, four input HDMI switcher with analog and digital audio de embedding, auto switching, and app ready controllability. Designed for professional AV installations in conference rooms, huddle spaces, classrooms, theater, and gaming spaces, it enables four HDMI inputs of up to DCI 4K30 12 bit 4: 4: 4 or DCI 4K60 8 bit 4: 4: 4 video to connect to a single display. Analog (3. 5mm and balanced
The Key Digital 4x1 4K/18G HDMI Switcher is a high-performance, four-input HDMI switcher with analog and digital audio de-embedding, auto switching, and app-ready controllability. Designed for professional AV installations in conference rooms, huddle spaces, classrooms, theater, and gaming spaces, it enables four HDMI inputs of up to DCI 4K30 12-bit 4:4:4 or DCI 4K60 8-bit 4:4:4 video to connect to a single display. Analog (3.5mm and balanced/unbalanced) and digital (optical and PCM) audio de-embed ports may feed audio of the selected source to an amplifier, a DSP, or a soundbar.
Integrating this 4x1 4K/18G HDMI Switcher with the Key Digital KD-AMP220 2-Channel Compact Digital Amplifier will enable an app-ready, all-in-one solution for control of video switching with sound and speech enforcement. The full buffer system manages TMDS re-clocking/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. This switcher supports all SD, HD, VESA, UHD 4K, and DCI 4K video standards, with support for a maximum data transfer rate of 18 Gb/s. In addition to IR, RS-232, and TCP/IP control, this switcher can be controlled via trigger voltage and features status-monitoring LEDs.
Additional Details
HDMI Switching
Four HDMI sources are sent to one HDMI output/display.
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 Dolby Vision and HDR10 (High Dynamic Range) levels for more lifelike 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 de-embedded and output to the analog (3.5mm stereo balanced/unbalanced) and digital (optical and PCM) connectors.
Key Digital App Ready
Scan and detect population for pre-built GUI and TCP/IP control via the Key Digital app.
Auto-Sensing
Automatic selection of newly detected source and switching from newly disconnected source via hot plug detection voltage when enabled.
KD-AMP220 Control Mode
Command forward to the Key Digital KD-AMP220 2-Channel Compact Digital Amplifier for an all-in-one UI control of video switching, audio, and speech enforcement.
Full Buffer System
Manages TMDS reclocking/signal regeneration, HDCP authentication to source and display, and EDID control handshake.
PTZ USB Camera Integration
Connect to the Key Digital KD-CAMUSB 1080p PTZ camera for full PTZ control via the Key Digital app and the KD-XUSB2 USB extender for signal extension over Cat 5e/6.
EDID Management
Internal library with 15 internal EDID handshakes 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
Controllable via panel button, serial IR, optical IR, RS-232, trigger in, TCP/IP, the Key Digital app, Compass Control Pro, and open API.
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, Dolby Vision & Deep Color Support
- Front-Panel Button & IR Remote Control
- HDCP 2.2 Compliant, EDID Support
- Full Buffer System, CEC Passthrough
- Key Digital App Ready
Specifications
Processing
| Switching Type | |
| Processing Resolution | |
| Color Processing | |
| Audio Processing |
Input
| Video Inputs | |
| Input Video Format | |
| Embedded Audio Input |
Output
| Video Outputs | |
| Output Video Format | |
| Audio Outputs | |
| Output Audio Format | |
| Embedded Audio Output |
Connectivity
| Other I/O | |
| Digital Audio Decoding | |
| HDCP Support | |
| HDR Support |
Hardware
| OS Compatibility | |
| Wireless |
Power
| Power I/O |
General
| Certifications | |
| Dimensions | |
| Weight |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.9 ★★★★★
Based on 2248 reviews
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Product Reviews
★★★★★ 5
my new favorite book
Format: Kindle
Ok so I never write reviews but this book was so good I felt the need to write this. Firstly your introduced to Huntyr you see her closed off hard core badass than towards the end you see the most subtle change and growth it’s amazing and the enemies to friends to lovers was just perfect, AND THE TWIST AT THE END GOT ME GOOD! You see one spicy scene the whole book but it doesn’t even MATTER BECAUSE THE BOOK WAS THAT GOOD. I’ve read 85 books in 2023-2024 so far and I’m pround to say this is my all time favorite. I’m so excited to read more of Emily Blackwoods books, this was my first time reading one of hers and I’m glad I did because HOLY!! Well done Emily well done
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Reviewed in the United States on February 23, 2024
★★★★★ 4
Fast paced romantasy you will not want to put down!
Format: Kindle
4.25 stars! I LOVED this book with similar vibes to Hush Hush, Fourth Wing, and The Serpent and the Wings of Night! It was fast paced with easy world building and will keep you turning the pages late into the night because you will not want to put it down!
Huntyr is a fierce bad@ss FMC trained to kill vampyres her entire life. She is sent on a mission to go to the academy and earn her spot into The Golden City. Upon arrival, she is forced to room with the delicious fallen angel, Wolf, who is the only one who knows about her assassin identity. The romance, the plot twists, the secrets revealed, the battles, and the tantalizing training scenes had me hooked! And that ending…. I’m holding my breath in need to know hell!
Read if you love:
🪽 Fae, Vampyres, Fallen Angels
🪽 Academy setting with magical trials
🪽 Forced proximity and slow burn
🪽 Rivals to lovers
🪽 Hidden identities and secrets
🪽 Tend your wounds
“𝘖𝘧 𝘤𝘰𝘶𝘳𝘴𝘦 𝘐 𝘸𝘢𝘴 𝘸𝘢𝘵𝘤𝘩𝘪𝘯𝘨 𝘺𝘰𝘶. 𝘐 𝘤𝘰𝘶𝘭𝘥𝘯’𝘵 𝘭𝘰𝘰𝘬 𝘢𝘸𝘢𝘺 𝘧𝘰𝘳 𝘢 𝘮𝘰𝘮𝘦𝘯𝘵, 𝘦𝘷𝘦𝘯 𝘪𝘧 𝘐 𝘵𝘳𝘪𝘦𝘥.”
“𝘐𝘧 𝘺𝘰𝘶 𝘸𝘢𝘯𝘵 𝘮𝘦 𝘰𝘯 𝘮𝘺 𝘬𝘯𝘦𝘦𝘴, 𝘏𝘶𝘯𝘵𝘳𝘦𝘴𝘴, 𝘢𝘭𝘭 𝘺𝘰𝘶 𝘩𝘢𝘷𝘦 𝘵𝘰 𝘥𝘰 𝘪𝘴 𝘢𝘴𝘬.”
“𝘠𝘰𝘶 𝘥𝘰 𝘯𝘰𝘵 𝘬𝘯𝘰𝘸 𝘵𝘩𝘦 𝘷𝘪𝘰𝘭𝘦𝘯𝘤𝘦 𝘵𝘩𝘢𝘵 𝘳𝘶𝘯𝘴 𝘵𝘩𝘳𝘰𝘶𝘨𝘩 𝘮𝘺 𝘷𝘦𝘪𝘯𝘴, 𝘣𝘦𝘨𝘨𝘪𝘯𝘨 𝘮𝘦 𝘵𝘰 𝘰𝘣𝘭𝘪𝘵𝘦𝘳𝘢𝘵𝘦 𝘢𝘯𝘺𝘰𝘯𝘦 𝘸𝘩𝘰 𝘭𝘢𝘺𝘴 𝘢 𝘩𝘢𝘯𝘥 𝘰𝘯 𝘺𝘰𝘶.”
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 12, 2024
★★★★★ 5
Excellent Rivals to Lovers!!
Format: Kindle
The tension and banter between Huntyr and Wold was delectable. I absolutely love the fallen angel and all of his flaws. Huntyr is amazing too being a badass FMC with some major trauma. The world building was great and I enjoyed the training aspect of the story. The writing was immersive and was in the story the whole time. The ending had quite a twist that I hadn’t anticipated and made my jaw DROP. Excellent job! I also loved the narration. Laura is one of my fave narrators!
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Reviewed in the United States on August 15, 2025
★★★★★ 5
Fallen Angels, fae, vampires, oh my!
Format: Kindle
Rating: 4.5 | Spice: 2 (but a good slow-burn)
•
Main Characters: Huntyr and Wolf
•
I couldn’t wait to read this book; there was so much hype about it! And there was no doubt why. I fell in love with the characters and the plot itself. This book is mainly plot driven more than friction driven but it’s easy to follow along with. The characters are fun, easily understood. The main setting is at an academy where both the main characters are going through trials and building strength for the final test, The Transcendent. There are fantastic side characters as well. I loved the camaraderie between Huntyr and her friends. But we don’t like Lanson. 😆
We do have some plot twists that come into play throughout the book. Secrets and betrayal to be seen. I did adore Wolf and Huntyr’s relationship. It was a classic slow burn trope. They didn’t hit it off fast, but in time their feelings grew. I loved their banter, so sexy. Wolf is your next book boyfriend; Huntyr is your next vampire assassin independent bad-a*s female. Themes include loyalty, trust, self-discovery, a true slow burn romance. Side note: book ends on a angsty cliffhanger!
•
Emily, thank you for writing this awesome novel and I cannot wait to devour Book 2, Blood So Brutal! 😍
•
Happy reading, my lovelies! xo
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Reviewed in the United States on January 21, 2024
★★★★★ 4
“My heart bows to you and you only, Huntress.”
Format: Kindle
3.5 🌟
This book popped up in my KU recommended reading suggestions and the synopsis sounded like what I was in the mood for. I'm so glad I took a chance on it. I went into this knowing absolutely nothing about it and ended up really liking it. I love when this happens.
The main characters are likeable and I easily found myself rooting for them. There is a mystery element to each of their backstories that I enjoyed watching unfold and can't wait to get more of. Wolf, in particular, has me fixated. Love him.
I found this to be an entertaining, addictive read with a plot that moves along at a good pace. It reads so easily I found myself very reluctant to put it down. Lots of twists and turns and the angst is there. A good set up for the next book to come, for sure.
My issues with this book....the dialogue feels a bit juvenile at times and there is a repetitive over use of a particular word phrasing that I found myself giving the ole eye-roll to. There are, without a doubt, some pretty cliche moments that gave me a bit of the cringe. I think this could've certainly 100% benefited from more depth regarding the world building. Perhaps the world building was sacrificed to keep the pacing quick? Just a guess. Also, the lack of consistency of character for the FMC was really evident and so she feels quite illogical at times.
Overall, this was a fun and enjoyable read that hit the spot well enough for me. That ending certainly has me impatiently pining for book 2!
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Reviewed in the United States on June 18, 2024
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