If you've been comparing soundbars, home theater-in-a-box systems, and full surround setups trying to find the one system that actually delivers cinema-grade sound without cinema-grade complexity, the Sonos Ultimate Immersive Set with Arc Ultra is the answer most audiophiles land on. It bundles the flagship Arc Ultra soundbar, the Sonos Sub (Gen 4), and a pair of Era 300 speakers into one true wireless Dolby Atmos surround system — no messy speaker wires, no guesswork on placement, and no compromise on how a movie or a track is supposed to sound.

In this guide, we break down exactly what's inside the set, the technology that makes the Arc Ultra different from every soundbar that came before it, and why this is the system we recommend most often at our Raipur experience centre for anyone building a serious home theater in 2026.

What's Included in the Sonos Ultimate Immersive Set

This isn't a single soundbar — it's a complete 5.1.2-style immersive surround package built around four Sonos components:

•      Sonos Arc Ultra Soundbar × 1 — the front-channel centrepiece with Dolby Atmos height channels

•      Sonos Sub (Gen 4) × 1 — wireless deep bass that handles the low end so the Arc Ultra doesn't have to

•      Sonos Era 300 × 2 — rear surround speakers with their own upward and side-firing drivers for true spatial audio

Together, this is Sonos' most complete home theater package, and it's available as one bundle on the Sonos Ultimate Immersive Set product page at 8mm.in, so you're not sourcing four separate components and hoping they pair correctly.

Why the Sonos Arc Ultra Is a Genuine Step Up

The Arc Ultra isn't an incremental refresh of Sonos' older Arc soundbar — it's a rebuilt flagship with new driver architecture and processing. A few things stand out:

Phased Array for realistic, directional sound

The Arc Ultra uses advanced processing to create five horizontal phased-array channels, placing sound precisely around you from the correct direction at the correct moment — instead of just throwing audio forward at the screen.

3D sound with Dolby Atmos

Upward-firing drivers bounce height channels off your ceiling to build a genuine multi-dimensional soundstage for movies, shows, and games, rendering everything from a quiet whisper to a loud explosion with real depth.

Trueplay tuning

Trueplay automatically calibrates the Arc Ultra (and the height channels specifically) to the acoustics of your actual room — furniture, wall distance, ceiling height and all — so the system is tuned to your space, not a lab.

Eleven drivers in a slim, elegant cabinet

Eleven high-performance drivers deliver crisp highs, a dynamic midrange, and surprisingly deep bass from a soundbar slim enough to wall-mount or place discreetly under your screen.

Dialogue you never have to strain to hear

The Arc Ultra was tuned with the help of Oscar-winning sound engineers to keep dialogue clear even during loud, busy scenes, and the Speech Enhancement setting in the Sonos app boosts voices further whenever characters talk quietly or the action ramps up.

Sub (Gen 4) and Era 300: What Turns a Soundbar Into a Home Theater

A soundbar alone, however capable, is still a single front-firing unit. What actually makes the Sonos Ultimate Immersive Set feel like a real home theater is the Sub (Gen 4) adding wireless, room-filling low end, and the two Era 300 speakers placed behind or beside the seating position to complete rear and height surround. Together, the four units communicate wirelessly to build a genuine object-based Dolby Atmos field — sound that moves around and above the room instead of only coming from the TV wall.

It's a Music System Too

Because every unit in the set runs on the Sonos platform, the system doubles as a serious multi-room music setup. Stream music, radio, and podcasts from your favourite services straight through the Sonos app or Apple AirPlay 2 even when the TV is switched off — so the same investment powers your movie nights and your everyday listening.

Price, Warranty, and What You're Actually Paying For

MRP: ₹2,69,999 (inclusive of GST)

EMI: No-cost EMI options available at checkout

Warranty: 2-year official India warranty on every unit in the set

Returns: 7-day return and replacement policy on all physical products

At this price point, the Sonos Ultimate Immersive Set is competing with full AV-receiver-based 5.1 setups — but without the wiring, the calibration mic, or the separate amplifier. You can check current pricing, offers, and stock directly on the Sonos Ultimate Immersive Set with Arc Ultra product page.

Why Buy Your Sonos Arc Ultra Set from 8mm

Sonos systems are only as good as the room they're set up in. Buying from an authorized dealer with in-house AV expertise makes the difference between a soundbar that sits under your TV and a system that's actually calibrated for immersive Dolby Atmos playback.

•      Authorized Sonos retailer with genuine products and full manufacturer warranty

•      In-house audio specialists who can guide Era 300 and Sub placement for true surround imaging

•      GST input invoicing, no-cost EMI, and a price-match policy if you find it cheaper elsewhere

•      Hands-on demo of the Arc Ultra and the full immersive set at our Raipur experience centre before you buy

Ready to Upgrade Your Home Theater?

Walk into our Shankar Nagar showroom in Raipur and hear the Sonos Ultimate Immersive Set with Arc Ultra for yourself before you decide, or message us directly on WhatsApp and our audio specialists will help you choose the right Sonos setup for your room and budget.

📍 Visit us: 8mm Experience Centre, Beside Arogya Hospital, Shankar Nagar, Raipur, Chhattisgarh – 492001

💬 WhatsApp us: +91 74407 90337

🛒 Buy online: Shop the Sonos Ultimate Immersive Set with Arc Ultra at 8mm.in

Frequently Asked Questions

What is included in the Sonos Ultimate Immersive Set with Arc Ultra?

The set includes one Sonos Arc Ultra soundbar, one Sonos Sub (Gen 4), and two Sonos Era 300 speakers — a complete wireless Dolby Atmos surround system.

What is the price of the Sonos Arc Ultra Ultimate Immersive Set in India?

The set is priced at ₹2,69,999 (inclusive of GST). You can check live pricing, offers, and no-cost EMI options on the official product page at 8mm.in.

Does the Sonos Arc Ultra support Dolby Atmos?

Yes. The Arc Ultra has upward-firing drivers that bounce Dolby Atmos height channels off the ceiling, and when paired with the Era 300 rear speakers in this set, it creates full object-based surround sound rather than simulated virtual surround.

Do I need the Sub and Era 300, or can I buy the Arc Ultra alone?

The Arc Ultra performs very well on its own, but the Sub (Gen 4) adds proper wireless bass and the Era 300 pair adds real rear and height channels. For a genuine home theater experience — not just an upgraded TV speaker — the full Ultimate Immersive Set is what we recommend.

Can I use this system for music streaming as well?

Yes. All four speakers run on the Sonos platform, so you can stream music, radio, and podcasts through the Sonos app or Apple AirPlay 2 even when the TV is off, making it a full-time music system as well as a home theater.

What warranty and support does 8mm provide on the Sonos Arc Ultra set?

Every unit carries a 2-year official India warranty, along with a 7-day return and replacement policy. As an authorized Sonos dealer, 8mm also assists with setup guidance and warranty claims — reach out on WhatsApp or visit our Raipur showroom for hands-on support.