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Ultimea Poseidon M4T 5.1 Dolby Atmos Sound Bar

Ultimea Poseidon M4T 5.1 Dolby Atmos Sound Bar

3.9· 1,600 ratings

Best price now

$87.99at eBayObserved at 7:57 AM

48% under what the other stores charge

Compared across 9 stores. Prices are checked against each store and labelled with when.

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Our take on the Ultimea Poseidon M4T 5.1 Dolby Atmos Sound Bar

The Ultimea Poseidon M4T is a 5.1-channel sound bar system with Dolby Atmos, a wireless subwoofer and rear surround speakers, rated at 410 W peak. It covers the basics a TV's built-in speakers can't: real surround placement, a separate bass unit and HDMI, optical/AUX, RCA and Bluetooth inputs. At $87.99 at eBay as of November 5, 2026, it sits at the low end of its recent range across 9 stores, which is unusually cheap for a 5.1 Atmos kit. Expect budget-tier build and room-correction-free setup at that price.

Best forFirst-time surround buyers on a tight budgetSmall to medium living roomsRenters who want wireless rear speakersTV, movie and game nights over music listening
Pros
  • True 5.1 layout with wireless subwoofer and rear speakers
  • Dolby Atmos decoding at a very low price
  • 410 W peak power is plenty for a small room
  • Bluetooth plus HDMI, AUX and RCA cover most TVs and phones
  • Wall-mountable, and rated for outdoor use
Cons
  • Budget build quality and plastic finish
  • No room calibration or app EQ on most units
  • Atmos height effect is simulated, not from up-firing drivers
  • Bluetooth is basic, with no aptX or AirPlay
  • Rear speakers still need power outlets

Ultimea Poseidon M4T 5.1 Dolby Atmos Sound Bar prices at every store

  • Macy'sNew

    In stock

    $149.99Observed at 7:57 AM
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  • Best BuyNew

    In stock

    $169.99Observed at 7:57 AM
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  • UltimeaNew

    In stock

    $169.99Observed at 7:57 AM
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  • StaplesNew

    In stock

    $174.29Observed at 7:57 AM
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  • Home DepotNew

    In stock

    $199.99Observed at 7:57 AM
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  • eBayNew

    Availability unknown

    $87.99Observed at 7:57 AM
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  • WalmartNew

    Availability unknownSold by Ultimea Labs

    $149.89Observed at 7:57 AM
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  • DirectDialNew

    Availability unknown

    $170.00Observed at 7:57 AM
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  • NordstromNew

    Availability unknown

    $199.99Observed at 7:57 AM
    Visit store

Also available at

  • Mathis HomeCheck price at Mathis Home

Ultimea Poseidon M4T 5.1 Dolby Atmos Sound Bar price history

Lowest price we've seen: $87.99 on Nov 5 at eBay. Tracked across 10 stores since Nov 5.

What reviewers say

Owner feedback is mixed but leans positive: buyers like the surround effect and bass for the money, while a share of units arrive with connection or channel dropouts. The 3.9 out of 5 from 1,600 ratings reflects that split.

Pros
  • Big surround sound for the price
  • Easy wireless sub and rear speaker pairing
  • Strong bass for a budget system
  • Simple setup with a TV
Cons
  • Occasional dropouts from the wireless sub or rears
  • Dialogue can sound thin without tweaking
  • Remote and on-unit controls feel cheap
  • Some units arrive defective or fail early

Specifications

Wireless
Yes
Configuration
5.1 Channel
With Surround Sound
Yes
Color
Black
Style
Wall Mount
Dolby Atmos Enabled
Yes
Outdoor
Yes
Connectivity
Bluetooth, HDMI, AUX, RCA
Max Wattage
410 W

Questions and answers

Is the Ultimea Poseidon M4T worth it at $87.99?
At $87.99 at eBay as of November 5, 2026, it is one of the cheapest ways to get a real 5.1 setup with a subwoofer and rear speakers. If you want genuine surround on a small budget, it is worth it; if you want polished sound and reliable app control, spend more.
Does it deliver real Dolby Atmos?
It decodes Dolby Atmos, but it has no up-firing height drivers, so the overhead effect is simulated through the surround channels. Expect wider, taller sound rather than true ceiling-height audio.
Do the rear speakers need wires?
The subwoofer and rear speakers connect wirelessly to the bar, but each rear speaker still needs its own power outlet. Plan for two outlets behind or near your seating.
What is in the box?
The sound bar, wireless subwoofer, two rear surround speakers, a remote, power cables and the basic connection cables. Check the listing for the exact HDMI or optical cable included.
How does it compare with a 2.1 bar at the same price?
A 2.1 bar at this price usually sounds cleaner and more reliable, but it cannot place sound behind you. The M4T wins on immersion; the 2.1 bar wins on build and consistency.
When is it cheapest?
Budget sound bars like this drop hardest around Black Friday and Prime Day. The current $87.99 at eBay is already near the bottom of its recent range, so waiting may not save much.
Where is the Ultimea Poseidon M4T 5.1 Dolby Atmos Sound Bar cheapest?
At eBay, for $87.99, 48% under what the other stores charge, as of our latest check.
What do buyers say about the Ultimea Poseidon M4T 5.1 Dolby Atmos Sound Bar?
Rated 3.9 out of 5 from 1,600 ratings.
Where can I buy the Ultimea Poseidon M4T 5.1 Dolby Atmos Sound Bar?
10 stores we checked sell it, including eBay, Walmart, Macy's, Best Buy, Ultimea.

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