ULTIMEA 7.1ch Soundbar with Wireless Subwoofer, Virtual Surround Sound System for TV, App Control, 410W Peak Power, Sound bar for TV, 4 Wired Surround Speakers, Home Theater Sound System Poseidon D70

Why I picked the Poseidon D70

I wanted a compact, living‑room‑friendly surround system that didn’t demand an A/V receiver, yet still threw a convincing bubble of sound around the couch. The Poseidon D70 checked the right boxes: a three‑channel main bar for dialogue, four wired surrounds (two front, two rear) for envelopment, and a 6.5-inch wireless subwoofer to fill out the low end. It claims 7.1‑channel “virtual” surround, leans on app‑based tuning with a 10‑band EQ and 121 presets, and it offers firmware updates over the air. The catch—important to know upfront—is that it’s not compatible with Dolby Audio or Dolby Atmos. Set expectations accordingly, and it’s a surprisingly capable package.

Setup, layout, and first power‑on

Unboxing took minutes. The bar, four satellites, and sub are all compact, with a clean, unobtrusive design that doesn’t dominate a room. Pairing the subwoofer was automatic at first power‑on—no button dance required.

One practical note about wiring: the rear speakers connect to the subwoofer via a 20‑foot cable. Because the sub is wireless to the bar but “wired” to the rears, the most straightforward layout puts the sub near the back wall. That ended up being a benefit in my space: the sub tucked behind the sofa, the rear satellites flanked the seating position, and the cable run stayed invisible. The front satellites and the bar can live up front; cable management was simple with a couple of adhesive clips.

With HDMI ARC to the TV and the TV’s digital audio output set to PCM (as recommended by ULTIMEA), the handshaking was painless. Optical input works too, but ARC let me power the system on/off with the TV and use the TV remote for volume. Bluetooth paired easily for casual listening.

App control and tuning tools

The D70’s app is the headline feature. It’s not just a secondary remote; it’s where most of the magic happens:

• 10‑band EQ with six quick modes: Movie, Music, Voice, Sport, Game, Night.
• 121 preset “matrices” across Bass, Pop, Classical, and Rock profiles for rapid flavor changes.
• Adjustable surround levels (13 steps), helping you dial how present the side/rear channels feel.
• Firmware updates delivered over the air, which is a big plus for a product class that often never changes post‑launch.

I found the app straightforward for deep tweaks, though there were a couple of small quirks. Over Bluetooth, the app occasionally took a moment to detect the system; controlling via the included remote is the fallback. Over HDMI ARC, detection was instant and stable.

Night Mode deserves a shoutout. It meaningfully reduces dynamic range and trims bass so late‑night viewing doesn’t rattle walls. It’s not a token toggle; it really calms the system down while preserving dialogue intelligibility.

Sound quality: bigger than it looks

The D70’s core strengths are clarity, punch, and coverage. The three‑channel main bar keeps voices anchored and intelligible, even when effects get busy. I rarely needed to bump dialogue with the Voice mode, but it’s there if you prefer extra midrange lift.

The 6.5-inch subwoofer is more capable than its size suggests. In a medium‑sized living room, it delivered tight, satisfying bass for action scenes and electronic music without droning. Placing it near the rear wall (as the rear speaker wiring encourages) emphasized room gain; pulling it a foot off the wall brought the response into balance. I landed at a sub level ‑2 relative to default for most content.

The “7.1” here is virtual, not discrete. There’s no Dolby decoding, so surround engagement relies on the system’s own processing and upmixing. Feed it PCM, and it can extrapolate ambience and directional cues into the side and rear speakers convincingly enough to feel enveloping. With the surround level set between 6 and 8 (of 13), I got a wraparound field that felt room‑filling without calling attention to the rears. Push it to the maximum, and effects get splashy and a bit diffuse; fun for demos, less natural for movies.

Volume headroom is ample for everyday use. On the 0‑100 scale, the system sounded full and controlled into the mid‑40s; past that, the bar can sound a touch bright depending on your room. A 2‑3 dB treble reduction in the app cured that for me.

Movies and TV

With the TV output locked to PCM, the D70 was plug‑and‑play reliable. Dialogue stayed forward and clean in busy mixes, and panned effects tracked predictably from the front bar to the sides and rears. This isn’t object‑based audio, but for non‑Atmos streaming and broadcast content, the illusion of multi‑channel depth is convincing.

A tip for consistency: if your source wants to switch between stereo and multichannel formats, you may hear momentary reconfigurations or level jumps on some setups. For a seamless experience, set all sources to output PCM stereo or PCM multichannel consistently (the D70’s processing does the rest), and use the Movie mode as your baseline. Night Mode is excellent for late viewing; it reins in bass and smooths peaks without turning everything to mush.

Music

Two‑channel music playback is better than I expected from a budget‑friendly surround set. With surround processing minimized or off, the bar delivers good center imaging and a balanced midrange. For background listening where you want room coverage, enabling upmixing spreads the presentation without wrecking stereo. I stuck with Music mode and trimmed 60–80 Hz a hair on the EQ for a tighter kick drum.

Bluetooth is handy for quick sessions, though HDMI or optical will sound a touch cleaner and avoid the occasional app reconnect dance.

Gaming

Over HDMI, latency was not an issue in my setup; controller input lined up with on‑screen action and sound cues. The Game EQ tilts toward a punchier low end and a bit more high‑frequency bite for footsteps and positional cues. If you’re chasing the absolute lowest lag, avoid Bluetooth and stick to HDMI ARC or optical.

Where the D70 falls short

• No Dolby Audio/Atmos: If you’re chasing native Dolby decoding or object‑based height effects, this isn’t the system for you. Use PCM; the D70’s processing is capable, but it’s not a substitute for true Atmos.
• “7.1” is virtual: Rear channels are driven by the system’s upmix/processing. Depending on content, the same elements may appear in front and rear on the same side. It’s enveloping, not surgically discrete.
• Placement constraints: Because the rears tether to the sub, the sub’s ideal position is the back of the room. That’s perfect in many layouts, but less ideal if your only power outlet is up front.
• App quirks: The app is feature‑rich and generally solid. Over Bluetooth it sometimes takes a beat to reconnect; via HDMI ARC, it’s far more consistent. Update firmware early—it improved blend and overall system behavior in my testing.

Practical tips to get the best out of it

• Use HDMI ARC if you can; set your TV’s Digital Audio Out to PCM.
• Start with Movie mode, surround level 6–8, sub level ‑2 to 0, then fine‑tune with the 10‑band EQ.
• If late‑night watching is common, Night Mode is worth assigning to a quick‑access button.
• Place the sub near the rear wall between the two rear satellites; move it a foot off the wall to tighten bass.
• Keep firmware current via the app; updates meaningfully tweak performance.

Value and alternatives

Compared with typical single‑bar solutions in this price bracket, the D70’s four satellites make the biggest difference. Having actual speakers at the sides and behind you creates a more immersive bubble than virtual surround from a lone bar can pull off. If you need native Dolby or height channels, you’ll want to look upmarket. If you want a straightforward, living‑room‑friendly system with genuine wraparound coverage and deep tuning tools, the D70 holds its own.

Recommendation

I recommend the Poseidon D70 for movie‑night households and mixed‑use living rooms that want real surround presence without the complexity of a receiver. Its strengths are clear dialogue from the three‑channel bar, a capable 6.5-inch sub, flexible placement thanks to the wireless bar‑to‑sub link, and an unusually robust app with meaningful EQ and surround controls. The trade‑offs—no Dolby decoding, virtual rather than discrete 7.1, and some placement constraints due to rear wiring—are reasonable at the price. Set your sources to PCM, spend five minutes in the app to tailor the sound, and it delivers an engaging, room‑filling experience that’s easy to live with.