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Roku Ultra Streaming Media Player - 4640R

Abt Model: 4640R | UPC Code: 829610001104
Roku - 4640R - Media Streaming Devices
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4K Resolution With HDR/ Quad-Core Processor/ Stream Over 350,000 Shows And Movies/ Lost Remote Finder/ 802.11ac MIMO Dual-Band Wireless/ Dolby Audio Over HDMI And Optical/ Night Listening Mode/ microSD Card Slot/ USB Port/ Up-Scaling 720p/1080p To 4K 60fps Ultra HD On 4K UHD TVs/ IR Receiver/ Black Finish
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Your Shipping Zip Code: 20149 (change)

Estimated Delivery Date: 
Feb 23rd - Feb 24th *

When you order in the next 22 hours, 15 mins

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Product Details

Roku Ultra Streaming Media Player - 4640R


  • Powerful Quad-Core Processor
    With a fast quad-core processor and 802.11ac dual-band wireless, Roku Ultra gets you to your favorite shows fast, with smooth and responsive navigation and channels that launch quickly
  • 4K Brilliant HD & 4K Picture Quality
    Roku Ultra delivers brilliant picture quality to your 4K UHD or 1080p HD TV with crisp, life-like images that practically jump off the screen. Get the visual rush of 4K Ultra HD streaming when using a compatible 4K TV & content. The Roku 4K Spotlight channel helps to find 4K content. Check with the channel partner for bandwidth requirements
  • Vibrant HDR Color
    Get rich, realistic color detail—even in the darkest shadows and brightest highlights—when you stream HDR content on a compatible HDR TV. HDR displays a wider range of colors, brighter whites, and deeper blacks to create more natural, beautiful, and true-to-life imagery. The Roku 4K Spotlight channel helps to find HDR content. Check with the channel partner for bandwidth requirements
  • Lost Remote Finder
    Gremlin hid your remote? Just press the button on your Roku Ultra and your remote will tell you where it is
  • Fully Loaded
    Get incredible features like an enhanced point anywhere remote with voice search, headphones for private listening, and gaming buttons. With voice search, just tell the enhanced remote what you're looking for and get fast unbiased results by title, actor, or director
  • What makes every Roku® streaming player great
    • Amazing content. Endless choice.
      Stream just about anything – movies, TV shows, live sports, news, and music. With 350,000+ movies and TV episodes to choose from, entertainment is on your schedule. Find popular choices that you can rent, buy, subscribe to or watch for free
    • Streaming made simple
      Roku players make streaming a snap. Just connect to your wireless network and your TV. Create a Roku account to easily sign up for free trials, subscribe, rent or buy. An intuitive interface, a simple remote, and a convenient mobile app for iOS® and Android™ make it easy to find what you want to watch
    • Unbiased search across top channels
      From the latest movies and shows to cult classics, find where your favorites are free or cheapest to watch with unbiased search across top channels. Search through a wide selection of paid or free channels — by actor, title, or director — using your Roku remote, Roku mobile app, or voice search
    • Follow your favorites
      With Roku Feed™, you can follow movies, TV shows, actors, and directors and get automatic updates when new content is ready to stream or when the price drops
    • Take it on the go
      Move your Roku player to different TVs in your home or take it to a friend's house. Hotel & Dorm Connect* even lets you stream on the go, in your dorm or hotel room. Just bring your Roku remote, power adapter, and your smartphone, tablet, or laptop with a web browser to connect your activated player, sign in, and start streaming
  • Mobile experience
    • The Roku mobile app
      Turn your smartphone or tablet into a convenient streaming companion. Use your mobile device as a fully functional remote control and so much more!
    • Search
      Searching on your phone has never been easier. Use your voice to say what you're looking for or use your mobile keyboard to type. Get fast and comprehensive results by title, actor, or director. And quickly start movies or shows on your TV from the app
    • Private listening
      Audio is key to your entertainment experience, but you can't always turn the volume up high. This feature lets you listen as loud as you like while keeping things quiet for everyone around you. Use your smartphone or tablet and the Roku mobile app to enjoy private listening anytime via your headphones
    • Casting
      The Play On Roku feature makes it easy to cast photos, videos, and music from your compatible smartphone or tablet right to your TV. Enjoy fantastic slideshows and movies starring you and your friends and loved ones



  • 802.11ac MIMO dual-band wireless
  • 10/100 Base-T Ethernet

Video Outputs

  • Up to 1080p HD (1920 x 1080) on HD TVs
  • Up to 4K/60 Ultra HD (3840 × 2160) on 4K UHD TVs

Video Up-conversion

  • Up-scaling 720p to 1080p on HD TVs
  • Up-scaling 720p and 1080p to 4K 60fps Ultra HD on 4K UHD TVs


  • Dolby Audio over HDMI® and optical
  • Night listening mode

Storage Expansion

  • microSD card slot for additional channel storage
  • USB port for local playback

Remote Control

  • Advanced point-anywhere remote with voice search, headphone jack, and gaming buttons
  • Speaker for lost remote finder alerts
  • Player includes IR receiver, compatible with various universal remotes

Power Consumption

  • <4.5W (typical) when streaming

Power Input

  • 12V – 1A power adapter

USB Media Formats

  • Video: H.264/AVC (.MKV, .MP4, .MOV), on Roku 4 only: H.265/HEVC (.MKV, .MP4, .MOV); VP9 (.MKV)
  • Audio: AAC (.MKV, .MP4, .MOV); MP3(.MP3, .MKV); WMA (.ASF, .WMA, .MKV), FLAC (.FLAC, .MKV), PCM (.WAV, .MKV, .MP4, .MOV), AC3/EAC3 (.MKV,.MP4. .MOV, .AC3), DTS (.MKV, .MP4, .MOV), ALAC (.MKV, .MP4, .MOV, .M4A)
  • Image: JPG, PNG, GIF (non-animated)

What's In The Box:

  • Roku Ultra streaming player
  • Advanced remote
  • Headphones for private listening
  • Two AA batteries
  • Power adapter & USB cable

Approximate Dimensions:

  • Height: 0.85"
  • Width: 4.9"
  • Depth: 4.9"

Approximate Weight:

  • Unit: 0.5 lbs
  • Shipping: 1 lbs

Warranty Information:

  • Manufacturer Warranty (authorized online retailer): One Year Parts and Labor
Need Accessories?
HDMI Cables HDMI Cables
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Surge Protectors Surge Protectors
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Digital Optical Cables Digital Optical Cables
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More reasons to buy the Roku 4640R from Abt Electronics
  • is an authorized dealer (Learn More).
  • The Roku 4640R is Brand New.
  • The Roku 4640R Ships in a Factory Sealed Box.
  • Abt ships this product for free!


Surge Protectors
Surge Protectors
Protect your investment by using one of our guaranteed reliable surge protectors.
Panamax 2-Outlet Grey Multi-Use Surge Protector
In Stock
$ 44.95
Panamax Gray Home Theater Power Surge Protector
In Stock
$ 99.95
Panamax Powermax 8 Series 8 Outlet Surge Protector
In Stock
$ 59.95
Digital Optical Cables
Digital Optical Cables
Get undistorted, smooth, clear, and dynamic performance.
AudioQuest Pearl Series 1.5 Meter (5 Feet) Digital Optical Cable
In Stock
$ 28.75
AudioQuest Pearl Series 3 Meter (9.9 Feet) Digital Optical Cable
In Stock
$ 38.75
HDMI Cables
HDMI Cables
Experience a true digital quality transmission.
AudioQuest Pearl 1M HDMI Cable
In Stock
$ 28.75
AudioQuest Pearl 2M HDMI Cable
In Stock
$ 38.75
AudioQuest Indulgence Series Pearl 3 Meter (9.8 Feet) HDMI Cable
In Stock
$ 48.75
Check here if you only want to add the selected accessories
to the cart and click the "add to cart" button for this item.


by PowerReviews

(based on 443 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



  • 3 Stars



  • 2 Stars



  • 1 Stars




of respondents would recommend this to a friend.

Most Liked Positive Review


Very happy! Much better than the Roku 4!!!

I am very happy with the Ultra so far! This is what the Roku 4 should have been. Just a few reasons: 1. Speed. The Ultra does not lag like the Roku...Read complete review

I am very happy with the Ultra so far! This is what the Roku 4 should have been. Just a few reasons: 1. Speed. The Ultra does not lag like the Roku 4 does. The menus are quick and responsive. Even loading and buffering times seem to be reduced! 2. The Ultra seems to handle high-bitrate video streams much better than The Roku 4. Dropped frames, lip sync problems, and other annoyances all seem gone with the Ultra. 3. Up-conversion from 2K to 4K seems to be much better. Example: Programming on HBO GO looks like it is being streamed in native 4k with the Ultra, even though it is not. This seems to apply to other 2K sources streamed through the Ultra as well. Of course, I should also mention that programming being streamed in native 4K (Netflix/Amazon/Vudu/etc.) looks amazing too! 4. The Ultra isn't constantly losing connection with the remote control. This was a big problem with the Roku 4. The 4 kept losing the remote connection at least once a day until the whole unit was rebooted. This happened on BOTH Roku 4 units I have in two different locations. So far, no problems with remote control connectivity with the Ultra! My *ONLY* complaint so far would be the moving of the OK button to the up/down/left/right buttons and putting the "Search" button where the OK button had been on previous remotes. I am finding myself (because I am used to the old remote) pressing the "search" button instead of "OK" button, causing it to kick me out of whatever app I was in and/or watching. This will take some getting used to, but It is not a deal breaker.


Most Liked Negative Review


Amazing...when works

We have 2 Roku players - 3 and because of the love, we purchased a Ultra one. Unfortunately this new top of the line device fall short and did not met our expectations....Read complete review

We have 2 Roku players - 3 and because of the love, we purchased a Ultra one. Unfortunately this new top of the line device fall short and did not met our expectations. Do not get me wrong. When this device decide not to freeze the remote is a beast. Super fast and nothing short of amazing. But having the remote failed to control the player 3-4 times a day is huge pain in the a.s. To fix, I need to unplug the power cord and remove and insert the batteries. So if this is a some kind of firmware issue it needs to be resolved fast. Otherwise, this great player would earn bad name of not being capable to handle proper 4k streaming. There ware issues with 4 and now the Ultra.

Reviewed by 443 customers

Displaying reviews 1-10

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So simple; just turn on and click!


from Mountain View, CA, United States

Previously used XBox to get into streaming video and was cumbersome, but with Roku it's as easy as clicking a couple of buttons


Great image quality and nice features


from Rochester NY

Verified Buyer


  • New remote. Performance. Good Image quality.


    Best Uses

      Comments about Roku Ultra Streaming Media Player:

      Performance is much improved compared to the older models. New user interface software is a nice added feature. New wireless remote is quick responsive.

      • Was this a gift?:
      • No

      nice upgrade


      from Columbus, OH, United States

      I bought a Roku 4 that is great so it was a no brainer to go for the Ultra to replace an older Roku 2 in the home theater. Better everything and a great early Roku 4 owner deal too!


      Overzealous HDCP from Roku


      from Raleigh, NC

      Roku Ultra implements such over-the-top HDCP protections that despite having two 2016 Sony TVs, an HDCP 2.2 compliant HDMI splitter, and all 18Gbps HDMI cables approved for 4K and HDR, I still get HDCP error messages from Roku. Will be taking it back.


      Nice Interface, Useless with large USB Hard Drive


      from New York, NY, United States

      The actual Roku interface is quite good and speed seemed pretty good as well. But I purchased this unit to replace my WDTV media server whose interface I did not care for. Only problem is that we have all our family videos on a 3 Tb USB drive and the ROKU Ultra only recognizes drives up to 2 Tb!!! I tried to repartition the 3 Tb drive into a smaller drive (first 2Tb then 1 Tb) but it still does not recognize it! ROKU should state this limitation in it's product description!


      Just got the Ultra and hello GREEN SCREEN


      from Rocket City

      New out of the box and stuck at a GREEN SCREEN, not the way I was hoping this would start after spend the extra $$ for the Ultra. Maybe I should go back to by Roku2.


      works perfectly, easy to ...


      from Arizona, United States

      works perfectly, easy to install, intuitive operation.


      Good Option


      from Iowa, United States

      I purchased this to have a additional streaming option,besides a game counsel. It does appear to have 'slowed'up compared to when I first 'hooked' it up.Still faster load up then a gaming device that is several years old!Will continue to recommend!!

      (3 of 3 customers found this review helpful)


      Audio sync bug


      from Los Angeles, CA, United States

      Just purchased the new ultra to replace my Roku 4, experienced audio sync defect. The audio flutters until Night option is selected. ultra connected to Sony STR 5000es and X850b 4K tv


      Overall Excellence


      from Somerville, NJ, United States

      I have owned this for about a month now and it provided me with so much entertainment. I love Roku and the Ultra was my best purchase yet. I even bought another one for a family memeber as a gift. I would definitely recommend anyone to at least give it a try and you will be instantly hooked. Also, for those HDR lovers, you will not be disappointed.

      Displaying reviews 1-10

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      Roku Ultra Streaming Media Player

      Roku Ultra Streaming Media Player

      In Stock (Ships From Manufacturer)

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