The useful differences

What changes when you use it

Both players cover 4K, HDR, and Dolby Vision. Ultra earns its larger box when you need a cable to the router, local USB media, or a remote that is easier to find and recharge.

Shape

Streaming Stick 4KHDMI stick

No shelf space

Roku UltraSet-top box

Ports stay reachable

The stick is easier to hide. Ultra is easier to wire and reach, but it needs a place near the TV.

Network

Streaming Stick 4KWi-Fi 5 · no Ethernet port

Use reliable Wi-Fi

Roku UltraWi-Fi 6 · 10/100 Ethernet

Add a stable cable

Choose Ultra when a wired connection solves weak or crowded Wi-Fi behind the television. Wi-Fi 6 still needs a compatible router.

Remote

Streaming Stick 4KVoice Remote

TV power and volume

Roku UltraVoice Remote Pro

Rechargeable, backlit, finder

Ultra’s remote matters if you regularly lose the remote, watch in the dark, or do not want disposable batteries.

Extra port

Streaming Stick 4KUSB for power

Streaming only

Roku UltraUSB 3.0 for media

Attach supported local media

Do not buy Ultra for USB unless local playback is part of your plan. The Stick’s USB connection powers the player.

Audio and HDR extras

Streaming Stick 4KCore HDMI audio · Dolby Vision

Enough when the rest of the system is basic

Roku UltraDolby Atmos features · HDR10+

Useful only when the full chain supports it

Your TV, sound system, app, and title must also support the format. An Ultra cannot add Atmos or HDR10+ to the rest of an incompatible chain.

Confirm the two Roku models

Streaming Stick 4K plugs straight into an HDMI port and stays behind the TV. Ultra sits beside the TV as a separate box. It adds ports and Voice Remote Pro. The comparison covers those two current U.S. models, not every Roku player.

If you have not decided to replace your current Roku, make that decision before choosing a new model.

Visual check1 image · official source
Official Roku Streaming Stick 4K retail-box product still from the United States PDP carousel
Official image

Roku Streaming Stick 4K product identification

Official Roku United States Streaming Stick 4K PDP still identifies the stick and retail box. It does not demonstrate streaming performance, Wi-Fi range, or picture quality.

Look for

Match the slim HDMI stick and Voice Remote before applying Stick 4K selection criteria.

Model scope

Roku Streaming Stick 4K identification from the United States PDP carousel still.

Source: Roku

Compare published picture and Atmos rows

Both players list 4K, HDR, and Dolby Vision. Ultra also lists HDR10+ and Dolby Atmos audio features. Those extras work only when the TV, sound system, app, and title support the same format. Roku calls Ultra 30% faster than its other players; that is Roku’s claim, not a GearCurrent benchmark.

Do not pay for a format the rest of your setup cannot use.

Compare remotes and networking classes

Stick 4K includes a Voice Remote with TV controls and uses Wi-Fi 5. Ultra includes the rechargeable Voice Remote Pro with backlit buttons and a lost-remote finder. It also adds Wi-Fi 6 and 10/100 Ethernet.

Ultra is worth more when a network cable or the better remote fixes a problem you have now.

Check the ports and cable route

Stick 4K uses HDMI for the TV connection and USB for power. Ultra has separate HDMI, Ethernet, USB 3.0, and power ports. Check the space behind the TV and where each cable would run before you buy.

The better choice is the one that fits the actual TV cabinet and network connection.

Visual check1 image · official source
Official Roku Ultra product still showing rear Ethernet, USB, HDMI, and power ports
Official image

Roku Ultra ports identification

Official Roku United States Ultra PDP gallery still identifies Ethernet, USB, HDMI, and power ports on the set-top chassis. It does not demonstrate throughput or Atmos performance.

Look for

Confirm the Ultra port layout when Ethernet or USB is part of the purchase decision.

Model scope

Roku Ultra port identification from the United States PDP gallery still.

Source: Roku

What still depends on your situation

Consider Streaming Stick Plus only if it fits

Streaming Stick Plus is another 4K HDR stick in Roku’s U.S. range. Its own page lists HDR10, HDR10+, and HLG. It does not list Dolby Vision in the same way as Stick 4K. Read the specifications on the exact product page rather than a nearby recommendation card.

Choose Plus only when its own format list meets your needs.

Finish the replacement decision first

If you own an older Roku, first check whether it still receives the apps and updates you need. After you buy, set Display type against the TV’s supported HDR formats. Compare Fire TV only if you are still open to leaving Roku.

Replacement, setup, and cross-brand shopping are separate decisions. Finish one before starting the next.

Make the choice

Choose the situation that sounds like yours

You need Ethernet or Wi-Fi 6 in the published networking rowLean Ultra: its product page lists Wi-Fi 6 (802.11ax) and 10/100 Ethernet; Stick 4K lists 802.11ac dual-band Wi-Fi without an Ethernet port row.

Wired Ethernet and Wi-Fi 6 appear on Ultra’s opened United States product page.

You need Voice Remote Pro finder / backlight / rechargeable featuresLean Ultra when those Voice Remote Pro features are required; Stick 4K documents Voice Remote with TV controls instead.

Remote generation is a first-party selection criterion.

A slim stick that will not block neighboring HDMI ports is requiredLean Streaming Stick 4K when the slim-stick positioning matches the TV’s HDMI layout.

Form factor is a Stick 4K differentiator on its product page.

You are reading Dolby Vision on the Stick Plus pageConfirm the Dolby Vision wording belongs to a related Stick 4K card before calling Plus Dolby Vision-capable.

Related-product cards on Plus HTML are not Plus specifications.

Scope and limits

Before you apply this advice

This covers: United States buyers choosing between current Roku Streaming Stick 4K and Roku Ultra using the opened United States Roku product pages and players hub. Canada is not named because no Canadian first-party PDP or availability page is cited here.

This does not cover: Streambar soundbar hybrids, Ultra LT Walmart-only SKUs without a separate first-party row, prices, stock, “best Roku” rankings, Fire TV cross-brand shootouts as the primary decision, Canadian price or stock inferred from United States PDPs, and United Kingdom, European Union, Australia, Japan, or other-region hardware SKUs, menus, warranties, or availability the cited United States Roku pages do not support.

  • Do not publish a “best Roku” ranking or invent speed benchmarks beyond Roku’s attributed Ultra marketing claim.
  • Do not infer Canadian price, stock, or SKU availability from United States product pages.
  • Do not present Streambar hybrids or Ultra LT as covered options here.
  • Do not copy Fire TV comparison criteria into this Roku-only selection.

Sources

Where the facts come from

  1. 01
    RokuRoku Streaming Stick 4K

    United States Stick 4K PDP for 4K/HDR/Dolby Vision positioning, long-range Wi-Fi, slim HDMI stick form factor, Voice Remote with TV controls, 802.11ac networking, and USB power/port framing. Independently re-opened 2026-09-06.

  2. 02
    RokuRoku Ultra

    United States Ultra PDP for “30% faster” marketing claim, 4K/HDR/Dolby Vision, Dolby Atmos audio features, Wi-Fi 6 / 802.11ax, Ethernet, USB 3.0, and Voice Remote Pro (backlit, rechargeable, finder). Independently re-opened 2026-09-06.

  3. 03
    RokuRoku Streaming Stick Plus

    United States Stick Plus PDP for optional mid-tier 4K HDR stick positioning; related Stick 4K Dolby Vision cards on the same HTML are not Plus specs. Independently re-opened 2026-09-06.

  4. 04
    RokuRoku streaming players

    United States players hub for current lineup identity among Stick, Stick Plus, Stick 4K, Ultra, and Streambar SE. Independently re-opened 2026-09-06.