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The ULTIMEA Poseidon M20 is a compact all-in-one 2.1-channel soundbar that integrates dual mid-high speakers and a built-in subwoofer to deliver clear vocals, rich mids, and powerful, adjustable bass. Featuring Ultimea’s exclusive BassMX technology and a side-firing bass port, it produces deep, punchy low frequencies while maintaining a space-saving, lightweight design ideal for rooms of 110–160 sq. ft. With versatile connectivity including Optical, AUX, USB, Bluetooth 5.4, and a SUB OUT port for an external active subwoofer, it easily adapts to any home entertainment setup. Controlled via the Ultimea Smart App, users can access OTA updates, 121 professionally tuned EQ matrices, and customizable 10-band EQ settings across multiple sound modes, delivering a highly personalized and immersive audio experience for movies, music, and gaming.

The ULTIMEA Poseidon M20 is a compact all-in-one 2.1-channel soundbar that integrates dual mid-high speakers and a built-in subwoofer to deliver clear vocals, rich mids, and powerful, adjustable bass. Featuring Ultimea’s exclusive BassMX technology and a side-firing bass port, it produces deep, punchy low frequencies while maintaining a space-saving, lightweight design ideal for rooms of 110–160 sq. ft. With versatile connectivity including Optical, AUX, USB, Bluetooth 5.4, and a SUB OUT port for an external active subwoofer, it easily adapts to any home entertainment setup. Controlled via the Ultimea Smart App, users can access OTA updates, 121 professionally tuned EQ matrices, and customizable 10-band EQ settings across multiple sound modes, delivering a highly personalized and immersive audio experience for movies, music, and gaming.

This audio system delivers 50W of powerful, distortion-free Hi-Fi stereo sound for an immersive listening experience. It features three dynamic sound modes (Music/Movie/News) that use advanced DSP technology to intelligently optimize audio for different scenarios. With Bluetooth 5.0 wireless connectivity and multiple wired ports including optical, AUX, RCA, and USB, it offers versatile compatibility. The ultra-slim 3.4-inch design can be placed under TVs or wall-mounted, while acoustic enhancement technology provides impressive bass without the need for an external subwoofer. Weighing just 3.5 pounds and measuring 15.7 x 3.4 x 2.8 inches, it creates a high-quality, space-saving home theater solution.

Don’t let its size fool you, this 2.0 mini soundbar delivers surprising sound and balance that transforms your entertainment. With seamless setup and compact profile, it blends into any space while standing out where it counts.

Step up to great sound with our TCL 2.0 channel S Class sound bar featuring Dolby Atmos and DTS Virtual:X. Easy connectivity with HDMI eARC, Bluetooth, and more. Enjoy your favorite entertainment with crisp, clear sound making movies and music truly come to life.
| Pros for Ultimea - Poseidon M20 2.1ch Compact Sound Bar, Built-in Subwoofer, App Control, 120W, BT5.4, OPT/AUX,Wall Mount 2026 Ver - Black | |||
|---|---|---|---|
| There were no pros for this product— | Overall Performance | Sound Quality, Connectivity, Volume, Setup Ease, Size | Sound Quality, Connectivity, Volume, Ease of use, Setup |
| Cons for Ultimea - Poseidon M20 2.1ch Compact Sound Bar, Built-in Subwoofer, App Control, 120W, BT5.4, OPT/AUX,Wall Mount 2026 Ver - Black | |||
| There were no cons for this product— | There were no cons for this product— | There were no cons for this product— | Bass |
The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Easy set up, amazing sound, volume is loud, very compact, overall a very good purchase.
NicoleS Posted
Great sound. Portable. Ease of use. I watched a movie first! The sounds was incredible in movie mode. Now I’m jamming out to my music Bluetooth from my iPhone. I love this soundbar!
StellaBlue Posted
For a small soundbar, this thing puts out a tremendous amount of volume. Very good for a bedroom. Very pleased.
JohnM Posted