Sonos Ultimate Home Theater Completion Set (Sub 4 + 2x Era 300)

The Sonos Ultimate Home Theater Completion Set (Sub 4 + 2x Era 300, Black) is the fastest way to take an existing Sonos soundbar setup from “good” to fully cinematic. Add the Sub 4 for deep, room-shaking low end, then place the Era 300 pair behind you as dedicated rears to create awe-inspiring, immersive surround sound with clearer detail, wider envelopment, and more impact in every scene. Everything connects wirelessly over WiFi, sets up in minutes with the Sonos app, and can be fine-tuned for your room with Trueplay so effects hit harder, dialogue stays crisp, and music feels bigger and more dimensional.

What It's Good At:

• Delivering bigger, deeper bass with low-end extension down to 25 Hz for true theater impact
• Creating immersive multichannel surround when paired with a compatible Sonos soundbar
• Improving clarity by offloading low frequencies to Sub 4, letting speakers focus on mids/highs
• Fast, clean setup with wireless WiFi connectivity and simple in-app tuning
• Premium design that fits modern rooms with a matte black finish
• Flexible placement options (Sub 4 can sit upright or flat, and Era 300s work great as rears)

Sonos Era 300
Sonos Sub Gen 4

Sonos Ultimate Home Theater Completion Set Full Specifications:

• Set Contents: 1x Sonos Sub 4; 2x Sonos Era 300 

• Sonos Sub 4 — Amplifiers: Dual Class-D digital amplifiers
• Sonos Sub 4 — Woofers: Dual 5" x 8" elliptical woofers (inward-facing, force-canceling)
• Sonos Sub 4 — Architecture: Ported cabinet
• Sonos Sub 4 — Frequency Response: As low as 25 Hz
• Sonos Sub 4 — EQ: Auto-EQ balancing with paired Sonos speaker(s); adjustable bass/treble/loudness in Sonos app
• Sonos Sub 4 — Trueplay: Room-tuning via software
• Sonos Sub 4 — Dimensions: H 15.31 in (389 mm) x W 15.83 in (402 mm) x D 6.22 in (158 mm)
• Sonos Sub 4 — Weight: 25.99 lbs (11.79 kg)
• Sonos Sub 4 — Colors: Black, White
• Sonos Sub 4 — Finish: Matte
• Sonos Sub 4 — Join Button: Press once to add during setup
• Sonos Sub 4 — WiFi: 802.11a/b/g/n/ac/ax, 2.4/5 GHz broadcast-capable router
• Sonos Sub 4 — Ethernet: 10/100 port for hardwiring
• Sonos Sub 4 — Voltage: 100–240V 50/60Hz internal power supply
• Sonos Sub 4 — CPU: Quad Core 4xA55 1.9GHz
• Sonos Sub 4 — Memory: 512 MB DDR4; 4GB eMMC
• Sonos Sub 4 — Operating Temperature: 32°F to 104°F (0°C to 40°C)
• Sonos Sub 4 — Box Contents: Sub 4; Power Cable (6 ft / 2 m); Documentation (Quickstart + legal/warranty)
• Sonos Sub 4 — Requirements: WiFi/Internet; nearby outlet; latest Sonos app; compatible amplified non-portable Sonos product

• Sonos Era 300 (Each) — Amplifiers: Six Class-D digital amplifiers
• Sonos Era 300 (Each) — Tweeters: Four tweeters (upward-firing for Dolby Atmos reflections; side-firing for separation; forward-firing for center image)
• Sonos Era 300 (Each) — Woofers: Two woofers angled left/right to support stereo playback
• Sonos Era 300 (Each) — Microphones: Far-field mic array with beamforming + multichannel echo cancellation; mic disconnect via switch
• Sonos Era 300 (Each) — Adjustable EQ: Bass, treble, loudness via Sonos app
• Sonos Era 300 (Each) — Trueplay: Room tuning; compatible with iOS and Android devices
• Sonos Era 300 (Each) — Dimensions: H 7.28 in (185 mm) x W 10.24 in (260 mm) x D 6.30 in (160 mm)
• Sonos Era 300 (Each) — Weight: 9.85 lbs (4.47 kg)
• Sonos Era 300 (Each) — Colors: Black, White
• Sonos Era 300 (Each) — Finish: Matte
• Sonos Era 300 (Each) — Controls: Capacitive touch controls (play/pause, skip/replay, volume, voice assistant mute, group/ungroup)
• Sonos Era 300 (Each) — Bluetooth Button: Press to pair
• Sonos Era 300 (Each) — Mic Switch: Toggle off to disconnect all power to microphone hardware
• Sonos Era 300 (Each) — LEDs: Connection, microphone activity, mute status
• Sonos Era 300 (Each) — WiFi: WiFi 6 compatible; 802.11a/b/g/n/ac/ax, 2.4/5 GHz broadcast-capable router
• Sonos Era 300 (Each) — Bluetooth: Bluetooth 5.3
• Sonos Era 300 (Each) — Voltage: 100–240V 50/60Hz internal power supply
• Sonos Era 300 (Each) — USB-C: Line-in via Sonos Line-In Adapter + 3.5 mm aux (sold separately); Ethernet via Sonos Combo Adapter (sold separately)
• Sonos Era 300 (Each) — CPU: Quad Core 4xA55 1.9GHz
• Sonos Era 300 (Each) — Memory: 2GB DDR4; 8GB eMMC
• Sonos Era 300 (Each) — Voice: Works with Sonos Voice Control and Amazon Alexa (availability varies)
• Sonos Era 300 (Each) — Apple AirPlay 2: Works with AirPlay 2 on Apple devices iOS 11.4+
• Sonos Era 300 (Each) — Box Contents: Era 300; Power Cable (6 ft / 2 m); Documentation (Quickstart + legal/warranty)
• Sonos Era 300 (Each) — Requirements: WiFi/Internet; nearby outlet; latest Sonos app

Sonos Ultimate Home Theater Completion Set Q&A:

What do I need for this set to work as surround sound?

You’ll need a compatible Sonos soundbar system—this set is designed to add Sub 4 for bass and use the two Era 300 speakers as rear surrounds for an immersive home theater experience.

Does this set support Dolby Atmos?

The Era 300 speakers are built for immersive playback and include an upward-firing tweeter designed for Dolby Atmos content when used in the right setup.

Can I place the Sub 4 under a couch or lay it flat?

Yes. Sub 4 supports dual orientation, so you can place it upright or flat to fit your room and furniture layout.

Is everything wireless, or do I need to run speaker wires?

No speaker wire runs are required. Sub 4 and Era 300 connect to your system over WiFi, and each unit only needs power.

Can I use Era 300 with Bluetooth too?

Yes. Era 300 includes Bluetooth 5.3 for streaming from Bluetooth-enabled devices.

Can I hardwire either product with Ethernet?

Sub 4 includes a 10/100 Ethernet port for direct router wiring. Era 300 can be wired with an Ethernet connection using a Sonos Combo Adapter (sold separately).

How do I tune the system for my room?

Use Trueplay in the Sonos app to measure your room’s acoustics and automatically optimize sound so bass and surround effects feel balanced and natural.

What’s included in the box?

You’ll receive 1x Sub 4 and 2x Era 300, plus power cables (each 6 ft / 2 m) and documentation (quickstart + legal/warranty information).