SKU: 16153790261

Lumagen Radiance Pro 4242+ Ultra-HD, 4(18G)x2(9G). 1U rack ears included

Sale price$7199.55 Regular price$7999.50
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 15 - Jul 20

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Lumagen Radiance Pro 4242+ Ultra-HD, 4(18G)x2(9G). 1U rack ears includedRadiance Pro4k60 Video Processor See What the Director Intended The Radiance Pro series supports 4k60 inputs, and outputs, including HDCP 2. 3, HDR10, and HLG, and is compatible with Dolby LLDV sources. Winner of a Home Cinema Choice Best of 2021 award, and a Best Video Product award in Australia in 2021, the Radiance Pro is not standing still. Lumagen is adding to its 22 year legacy of video processor development by continuing to enhance features and

Radiance Pro™4k60 Video Processor

See What the Director Intended ™

The Radiance Pro™ series supports 4k60 inputs, and outputs, including HDCP 2.3, HDR10, and HLG, and is compatible with Dolby® LLDV™ sources. Winner of a Home Cinema Choice™ Best of 2021 award, and a Best Video Product award in Australia in 2021, the Radiance Pro is not standing still. Lumagen is adding to its 22-year legacy of video processor development by continuing to enhance features and algorithms, and adding a single-input, single-output model for those who would like to place the Radiance Pro after the AV switching.

The Radiance Pro series of video processors offers up to ten inputs, four outputs, and a multitude of video processing, setup, and calibration features. Much more than an HDMI switcher, the Radiance Pro has a host of features to improve the image on your screen. It is considered by many experts to be an essential part of any quality home cinema.

Optimizing HDR content has perhaps become the most important video processing feature. The Radiance Pro Dynamic Tone Mapping (DTM) analyzes multiple regions of every frame of content, detects scene changes, and optimizes the image for each frame of content. Jon Thompson, a movie producer who is responsible for post-production image quality at a major studio, recently evaluated the Radiance Pro DTM versus the other options. He said that “the other DTM options are not even in the same league as the Radiance Pro.”

Scaling quality again comes to the forefront with the 4k projectors and televisions. It should be intuitively obvious that home cinema scaling must be evaluated at viewing distance using actual moving image video content. The Tektronix PQA600C quantitative image analysis program is used by major studios and broadcast networks and includes 30 years of development by perception physicists. It includes viewing distance in its evaluation of scaling. The Radiance Pro has the industry’s best motion picture scaling and scores more than 20% higher than the competition using the Tektronix analysis software. Lumagen’s scaling provides the best quality scaling for 1080, 720, and SD, sources for 4k projectors and TVs. Scaling is also essential for aspect-ratio control, especially when using an anamorphic lens. In addition, the Radiance Pro has an edge-sharpening feature that helps restore detail lost during compression of the digital content.

Minimizing signal jitter is an extremely important criteria for HDMI. The Radiance Pro 5XXX series HDMI output clock jitter has been measured at about 10 pS. This is an ideal clock to send to the audio processor to minimize jitter at the DACs. Reduced jitter at the DAC reduces distortion. Lumagen has many reports of the 5XXX significantly improving audio due to this ultra-low jitter HDMI output.

Reference quality colorimetry is often overlooked as part of a high-end home theater. The Radiance Pro can provide automated video equalization, using third party calibration software, with more accuracy than calibration without a 3D LUT. Using the Radiance Pro’s DTM, and Color Management System, you can See what the director intended™.

Other features include image-based instant-auto-aspect detection and selection for HD, 3D, and 4k UHD and HDR sources. Anamorphic support with, or without, an anamorphic lens. Image based auto-aspect selection, plus precise geometry adjustments including size, and masking, are available. The Radiance Pro’s Non-Linear-Stretch (NLS) feature allows the user to stretch 16:9 content to fill an anamorphic screen using their preferred settings. For 16:9 screens and TVs, an anamorphic image can be placed anywhere in the active screen area, or with zoom, and/or cropping, can fill a larger portion of the screen. Multiple configuration memories allow for different independent configurations, such as day, night, sports, and black-and-white.

The adaptability of the Radiance Pro is second to none. Using Field Programmable Gate Array (FPGA) technology, the Radiance Pro can add hardware image processing and setup features long after installation. The Radiance Pro is adding new features over time. One example is HDR Dynamic Tone Mapping was added four years after product introduction and is available to all Radiance Pro owners by simply updating to the latest free release.

Radiance Pro Models:

4140: In: 1 – 18G, Out: 1 – 9G, 1U compact case 

4240-18G: In: 2 – 18G, Out: 1 – 18G, 1 – Audio, 1U case

4242-18G: In: 4 – 18G, Out: 1 – 18G, 1 – Audio, 1U case

4244-18G: In: 6 – 18G, Out: 1 – 18G, 1 – Audio, 1U case

4246-18G: In: 8 – 18G, Out: 1 – 18G, 1 – Audio, 1U case

4444-18G: In: 6 – 18G, Out: 2 – 18G, 2 – Audio, 1U case

4446-18G: In: 8 – 18G, Out: 2 – 18G, 2 – Audio, 1U case

5244: In: 6 – 18G, Out: 1 - 18G, 1 – 9G, 1U case

5348: In: 10 – 18G, Out: 2 – 18G, 1 – Audio, 1U case

Includes:

  • Remote Control

  • Universal power supply

  • USB cable for updating

  • Manual

  • Limited 2 year warranty, Extendable to 5 Years

  • Optional 18Ghz input card(s)

  • Optional 18Ghz output card(s)
    18Ghz output card has 1 video+audio and 1 audio out
    versus 2 video+audio outputs of 9Ghz output card

  • Rack ears included for rack mountable models

Key Features

  • HDMI 2.0 4k60 Input & Output
  • 12-bit 4:2:2 Video Pipeline
  • Automatic Aspect Ratio Detection & Selection
  • Industry’s Best Dynamic Tone Mapping for HDR Content with Accurate Color Rendition when compared to Studio Masters
  • Best Quality Scaling for In-Motion Content
  • True Genlock:
    Each Input Frame is Output Exactly Once
    Optimal Lip-Sync
    Game Mode (3 mS video delay) with all Processing Enabled
  • Programable Video Delay
  • Fast Source Switching
  • Darbee Vision Enhancement
  • Compatible with Dolby® LLDV™
  • As measured by Tektronix® (HDMI 2.1 FRL):
    Low Output Electrical Noise
    Low HDMI Output Jitter with 4XXX Models
    Ultra Low Output Jitter with 5XXX Models for Improved Audio Quality
  • Non-Linear-Stretch
  • Directly Control Seymour Screen Excellence Screen Masking
  • Additional Customization Features
  • Rec2020 colorspace and HDR supported
  • Housed in a 1U Rack Mountable Case (Some models available in Compact Case)
  • Free Software Updates Continue After Purchase
  • 2 Years Limited Warranty, Extendable to 5 Years

Reviews

"Reference status picture processing with a wealth of controls and futureproofing potential. Worth the outlay for high-end systems, but installation isn't for the AV novice.:

-HCC

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: 16153790261

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.3 ★★★★★
Based on 936 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
F
Verified Purchase
Frost
Port Orchard, US
★★★★★ 5
Best price best product
Worth it still got it after year 4 of it and haven't had a issue . Hits the high resolution it says it has but I doubt it's over 166hz ... even tho it claims unlimited lol ... decent for first time setup . I hit about 145 hours to 155hz max .... crisp big monitor make sure you use proper cables
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
T
Verified Purchase
TekkenG
Natrona Heights, US
★★★★★ 1
Better off saving your money for a quality brand like Acer or Samsung
Size: 24"/FHD/240Hz
If you were looking for a decent gaming monitor with a good refresh rate, you better keep looking. Honestly, I wanted to really like this thing. For $120, it ticked off a lot of great features for me: at least 120Hz refresh rate, 1080p quality, and some nifty reticule marks for FPS gamers like myself. And for a year I had no problems with it until a few days ago. The ability to control input's, power, and toggle the reticule features all lie on one singular button behind the monitor. Here lie's the issue; if that power button starts messing up, there is no way to control or turn on/off the monitor. This is exactly what happened on my unit; the power button/control went out and the monitor was basically useless. I contacted Koorui support via email, and all I got was a vague "Did you confirm the button is really broken" response. Replied back that I did, and the manufacturer has ghosted me. Basically, I HIGHLY advise you just save up a few $80 or $100 dollars and get a decent entry level gaming monitor. By going cheap with this one, you will just end up probably wearing out the power/control button and be left with an expensive paperweight. If you are DIY repair savvy, I am sure that replacing the power/control button probably is not that big of a deal. In which case, go right ahead as it is a decent monitor for the price. But with that said, having this thing break leaves you with basically no options to get it fixed and good luck trying to get a hold of Koorui for support. Sadly, this is a growing trend on buying electronic's here on amazon from smaller brand sellers. *Update* So as of writing this review, I got Koorui to reach out to me. They would agree to replace the monitor for free, but I would have to front the shipping costs. They have their operations out in California, so if you live on the east coast then expect to pay around $40-50 for shipping for the monitor all the way out there (nearly half the monitor's value). I told Koorui that this just did not make any financial sense and they offered to refund me 50% of the monitor's value. However, they have yet to specify how they will send the refund, so I am unsure of whether I will see my partial refund when this is all said and done. So know that if you do proceed to get this monitor and need to return it past the 30 day return window covered by Amazon. TLDR: just save up an extra $50-100 for a big brand gaming monitor and save yourself the headache of dealing with all of this.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 24, 2024
T
Verified Purchase
T
Lexington, US
★★★★★ 5
I feel fully enveloped in the work
Size: 34"/WQHD/1000R/HDR400
Changed my work at home experience. I feel fully enveloped in the work. I don't use it for gaming so can't comment on that. But for laptop heavy work days, this is a great experience.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
B
Verified Purchase
Boyd Mckee Kamer
Battle Creek, US
★★★★★ 5
Koorui 34E6UC (34" 3440×1440, 180 Hz, 1000R curved VA panel) — But Missing Info Buyers Should Know
Review: I purchased two of the Koorui 34‑inch curved ultrawide monitors for a dual‑monitor setup, and so far I’m very pleased with them. The picture quality is sharp, the brightness is solid, and the “Normal” color preset looks natural without any adjustments. For the price, these 34‑inch panels deliver very good performance. That said, there are a few important details the product listing and reviews don’t mention — and knowing them ahead of time would have saved me some stress during installation. 1. YES, the 34‑inch model DOES include stand‑offs (spacers) This is not mentioned anywhere in the listing, and even Amazon’s Rufus incorrectly says they are *not* included. They actually come in the small accessory packet with the manual. If you’re mounting these monitors, you will need those stand‑offs because of the recessed VESA pattern. They are already in the box — just not advertised. I rushed to order a separate spacer kit because the listing didn’t mention it, so I’m putting this here to help the next person avoid that. 2. One of my monitors flashed briefly until I disabled FreeSync On one of the two monitors, I noticed a quick bright “flash” when moving the mouse. Turning off Adaptive Sync / FreeSync in the monitor’s menu fixed it instantly. The other monitor didn’t have this issue, so it seems to vary by panel. Not a defect — just something to be aware of if you see flicker or brightness pops. 3. Color and brightness match well once set manually After setting both monitors to the same brightness, contrast, and color mode, they match very well side‑by‑side. The “Normal” color preset looks the most accurate on these VA panels. 4. Build quality and packaging are solid Both monitors arrived well‑protected, and the included cables work fine. The stand is basic, but I’m using monitor arms, so that wasn’t a factor for me. 5. Too early to comment on long‑term support or durability I’ve only had these monitors set up for a few hours, so I can’t speak yet to long‑term reliability or how responsive Koorui’s support is. I’ll update this review if anything changes over time. Bottom line: These 34‑inch Koorui ultrawides are excellent for the price, especially for gaming or a dual‑monitor setup. Just be aware that: - Stand‑offs ARE included (despite the listing not saying so) - FreeSync may need to be turned off on some units - Picture quality is great once you match settings manually - Long‑term support is still unknown If the listing had mentioned the included spacers, it would have saved me a last‑minute order — so I hope this review helps the next person.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026
C
Verified Purchase
Conner M.
Draper, US
★★★★★ 5
Awesome monitor! (my 3 year review)
So I've owned this monitor for about 3 years now and here's what I have to say about this monitor. The picture quality is actually really good. I got the 1080p version and I mostly use it with my Xbox series x and occasionally will use it for some lighter gaming on my gaming PC both work effortlessly well. The screen size is okay I think next time if it's in the budget I'll buy there 34 inch curved monitor. But for right now I'm sticking with this monitor until it dies and so far it's running strong 3 years later. Right now this monitor cost $80 which is an absolute steal at that price. I paid $130 for it and would say it's absolutely worth getting. There's no flickering. The setup process went smoothly. It's compatible with both my console and gaming PC! I absolutely love this monitor! I don't own the 27 inch version but I'd recommend going with either that size or bigger if you can afford it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 10, 2025

recommand products