Ultimate Immersive Set with Arc Ultra (Arc Ultra + Sub 4 + 2x Era 300)

Turn your living room into a premium Dolby Atmos home theater with Sonos’ most immersive surround bundle. Arc Ultra anchors your system with a powerful, sleek smart soundbar designed for ultra-precise spatial audio, clearer dialogue, and room-filling detail—while Sub 4 delivers deep, force-canceling bass you can feel without the buzz or rattle. Add the Era 300 pair as rear surrounds to expand the soundstage with stunning separation and height effects, making movies, shows, games, and Atmos music feel more lifelike and dimensional. Everything connects over WiFi for flexible placement, and the Sonos app makes setup, tuning, and everyday control simple.

Sonos Arc Ultra
Sonos Era 300
Sonos Sub Gen 4

What It's Good At:

• Delivering next-level Dolby Atmos surround with convincing height and side-to-side immersion
• Producing deep, dynamic bass with reduced distortion thanks to Sub 4’s force-canceling design
• Making dialogue easier to understand with AI-powered Speech Enhancement on Arc Ultra
• Creating a bigger, more precise soundstage using Era 300 surrounds for spatial audio realism
• Seamless multiroom audio and easy control through the Sonos app (plus AirPlay 2 support)
• Flexible placement and clean installs with WiFi connectivity and streamlined setup

Ultimate Immersive Set with Arc Ultra Full Specifications:

• Set Contents: 1x Arc Ultra, 1x Sub 4, 2x Era 300
• Color: Black

Arc Ultra — Full Technical Specifications

• Amplifiers: Fifteen Class-D digital amplifiers
• Tweeters: Seven precisely angled silk-dome tweeters (two upward-firing)
• Midwoofers: Six midwoofers
• Woofer: Sound Motion four-motor, dual-membrane woofer
• Microphones: Far-field mic array; mic disconnect via switch
• Adjustable EQ: Bass, treble, loudness (Sonos app)
• Trueplay: iOS and Android compatible
• Speech Enhancement: AI voice detection; four levels
• Night Sound: On/off in Sonos app
• Home Theater Audio Formats: Stereo PCM; Dolby Digital; Dolby Digital Plus; Dolby Atmos (Dolby Digital Plus); Dolby Atmos*; Dolby TrueHD*; Dolby Atmos (True HD)*; Multichannel PCM*; Dolby Multichannel PCM*; DTS Digital Surround**
• TV Audio Swap: Swap TV audio between soundbar and one or two Sonos Ace headphones
• Dimensions: 2.95 in (H) x 46.38 in (W) x 4.35 in (D) / 75 mm x 1,178 mm x 110.6 mm
• Weight: 13.01 lbs (5.9 kg)
• Colors: Black, White
• Finish: Matte
• Mounting: M5 x 0.8 mm thread pitch; L6.5 mm
• Mic Switch: Hardware mic power disconnect
• LEDs: Connection/mute/mic/errors indicators
• WiFi: WiFi 6; 802.11a/b/g/n/ac/ax (2.4 GHz / 5 GHz)
• HDMI eARC: Connect to TV HDMI eARC/ARC (included HDMI cable)
• Bluetooth: 5.3
• Voltage: 100–240V, 50/60Hz
• CPU: Quad Core (4xA55 1.9GHz)
• Memory: 2GB SDRAM; 8GB NV
• Box Contents: Power Cable I (6 ft / 2 m); HDMI Cable (4.9 ft / 1.5 m); Documentation

Sub 4 — Full Technical Specifications

• Amplifiers: Dual Class-D digital amplifiers
• Woofers: Dual 5" x 8" elliptical (inward-facing; force-canceling)
• Architecture: Ported cabinet
• Frequency Response: As low as 25 Hz
• EQ: Automatic balancing; bass/treble/loudness in Sonos app
• Trueplay: Sonos system room measurement and tuning
• Dimensions: 15.31 in (H) x 15.83 in (W) x 6.22 in (D) / 389 mm x 402 mm x 158 mm
• Weight: 25.99 lbs (11.79 kg)
• Colors: Black, White
• Finish: Matte
• WiFi: 802.11a/b/g/n/ac/ax (2.4/5 GHz)
• Ethernet: 10/100 port
• Voltage: 100–240V, 50/60Hz
• CPU: Quad Core (4xA55 1.9GHz)
• Memory: 512 MB DDR4; 4GB eMMC
• Box Contents: Power Cable I (6 ft / 2 m); Documentation

Era 300 — Full Technical Specifications (Each)

• Amplifiers: Six Class-D digital amplifiers
• Tweeters: Four tweeters (forward; two side-firing; upward-firing in directional horn for Atmos)
• Woofers: Two woofers angled left/right
• Microphones: Far-field mic array; mic disconnect via switch
• Adjustable EQ: Bass, treble, loudness (Sonos app)
• Trueplay: iOS and Android compatible
• Dimensions: 7.28 in (H) x 10.24 in (W) x 6.30 in (D) / 185 mm x 260 mm x 160 mm
• Weight: 9.85 lbs (4.47 kg)
• Colors: Black, White
• Finish: Matte
• Bluetooth Button: Pairing button
• WiFi: WiFi 6; 802.11a/b/g/n/ac/ax (2.4 GHz / 5 GHz)
• Bluetooth: 5.3
• Voltage: 100–240V, 50/60Hz
• USB-C: Line-in via Sonos Line-In Adapter (sold separately); Ethernet via Sonos Combo Adapter (sold separately)
• CPU: Quad Core (4xA55 1.9GHz)
• Memory: 2GB DDR4; 8GB eMMC
• Box Contents: Power Cable (6 ft / 2 m); Documentation

Ultimate Immersive Set with Arc Ultra Q&A:

What’s included in the Ultimate Immersive Set with Arc Ultra?

This bundle includes one Arc Ultra soundbar, one Sub 4 subwoofer, and two Era 300 speakers (for rear surround), all in Black.

Does this system support Dolby Atmos?

Yes. Arc Ultra is built for Dolby Atmos, and pairing it with Era 300 surrounds helps create a more expansive, multi-directional spatial audio experience.

How does Sub 4 improve movies and music?

Sub 4 handles the lowest frequencies with deep output (down to 25 Hz) and a force-canceling design that reduces distortion, so bass hits harder while remaining clean.

Can I place Sub 4 horizontally or vertically?

Yes. Sub 4 supports dual orientation, so you can stand it upright or lay it flat to better fit your room.

Is Trueplay supported, and do I need a specific phone?

Trueplay is supported on Arc Ultra and Era 300, and it’s compatible with both iOS and Android devices for tuning.

How does Arc Ultra make dialogue clearer?

Arc Ultra includes AI-powered Speech Enhancement with four adjustable levels, helping voices stay crisp and intelligible—even during loud scenes.

What connections do I need for the soundbar to work with my TV?

Arc Ultra connects via HDMI eARC/ARC using the included HDMI cable. If you need optical, an optical audio adapter is sold separately.

Can I stream music to this system when the TV is off?

Yes. You can stream over WiFi, and Arc Ultra and Era 300 also support Bluetooth 5.3 for compatible devices.