Sonos Arc Ultra vs Sonos Sub Gen 3 – Detailed Sound Comparison (2026)

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Brand	Sonos	Sonos
Model No	Arc Ultra	Sub Gen 3
Wired / Wireless	Wifi Speaker	Wifi Speaker
Driver Type	Dynamic	Dynamic

Driver Diameter	2 Woofer, 7 Tweeter, 6 Mid Woofer, Fifteen Class-D Digital Amplifiers	25.4 mm Tweeter, 388.62 mm Subwoofer, Both Class-D Digital Amplifiers
Impedance	NA	NA
Sensitivity	NA	NA
Frequency Response	NA	As Low As 25Hz
Maximum Power Input	AC100-240V 50/60Hz	AC100-240V 50/60Hz
Maximum Power Output	110 W ( RMS ) Surround Sound Channel Configuration : 2.1	245 W ( RMS ) Surround Sound Channel Configuration : â€Ž2.1
Signal to Noise Ratio	NA	NA

Noise Cancelling	NA	NA
Aux Connectivity	Yes	No
Weight	5.9 Kg	13.15 Kg
Dimensions	Soundbar : 1178 mm X 110.6 mm X 75 mm	Subwoofer : 402 mm X 389 mm X 158 mm
Available Colors	Black, White	Black, White
Accessories	Sonos Arc Wi-Fi Ultra Premium Smart Soundbar HDMI Cable Power Cable Warranty Card Quick Setup Guide	Sonos Sub Gen 3 Wi-Fi Premium Wireless Subwoofer Power Cable Warranty Card Quick Setup Guide
Other Features	Tuned to perfection - Enhanced Trueplay tuning technology optimizes the sound for the unique acoustics of the room. 3D sound with Dolby Atmos - Experience shows, movies, and games with the precise and immersive sound of Dolby Atmos. Immerse yourself in the music - Stream music, radio, podcasts, and more from your favorite services with the Sonos app or Apple AirPlay 2 when the TV is off. All-new Sonos Arc Ultra- Bring all your entertainment to life with the brilliantly realistic sound of Arc Ultra, featuring Dolby Atmos. Enjoy control with your TV remote, voice, the Sonos app, Apple AirPlay 2, and more.	ll-new Sonos Sub - Hear and feel the difference with Sub, the wireless subwoofer for deep bass. No buzz, just bass - 2 force-canceling drivers at the center of Sub eliminate vibration and rattle so you get powerful bass without any distortion. Made to be seen and heard - The award-winning and versatile design features a slim, sculptural shape and high-gloss finish. Stand Sub upright or lay it on its side. Lower lows and higher highs - Sub takes over the lowest frequencies, enhancing the midrange playback from paired speakers so you experience fuller, more detailed sound.
	Compare Sonos Arc Ultra with: Sonos Arc Premium Smart Soundbar JBL BAR 1000 Sony SA-RS8 Sonos Sub 4 JBL Spinner & Authentics 500	Compare Sonos Sub Gen 3 with: Sony SA-RS8 Sonos Arc Premium Smart Soundbar JBL BAR 1000 Sonos Sub 4 JBL Spinner & Authentics 500

Both systems aim to provide room-filling sound suitable for various entertainment needs. Key differences lie in output power, channel setup, and feature support, which influence performance. Sonos Sub Gen 3 and Sonos Arc Ultra are powerful home theatre speaker systems designed to deliver immersive surround sound with modern audio technologies. Audio enhancements and surround technologies improve clarity and spatial sound performance. Connectivity features such as Bluetooth and HDMI ensure compatibility with a wide range of devices.

Verdict: Choosing between Sonos Sub Gen 3 and Sonos Arc Ultra depends on your need for immersive sound and advanced audio technologies.

Top Differences

Sound Output: 245W vs 110W
Channels: 245 vs 110
Dolby Atmos: No vs Yes
Bluetooth: no vs yes
Bluetooth Version: NA vs ( 5.3 )

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Top Differences