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

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

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

Noise Cancelling	NA	NA
Aux Connectivity	No	Yes
Weight	13.15 Kg	5.9 Kg
Dimensions	Subwoofer : 402 mm X 389 mm X 158 mm	Soundbar : 1178 mm X 110.6 mm X 75 mm
Available Colors	Black, White	Black, White
Accessories	Sonos Sub Gen 3 Wi-Fi Premium Wireless Subwoofer Power Cable Warranty Card Quick Setup Guide	Sonos Arc Wi-Fi Ultra Premium Smart Soundbar HDMI Cable Power Cable Warranty Card Quick Setup Guide
Other Features	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.	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.
	Compare Sonos Sub Gen 3 with: Sony SA-RS8 Sonos Arc Premium Smart Soundbar JBL BAR 1000 Sonos Sub 4 JBL Spinner & Authentics 500	Compare Sonos Arc Ultra with: Sonos Arc Premium Smart Soundbar JBL BAR 1000 Sony SA-RS8 Sonos Sub 4 JBL Spinner & Authentics 500

Both models are designed for movies, music, and gaming, delivering a cinematic experience at home. Sonos Sub Gen 3 and Sonos Arc Ultra are powerful home theatre speaker systems designed to deliver immersive surround sound with modern audio technologies. Differences in power output, channel configuration, and audio technologies can impact overall sound performance. Both models offer multiple connectivity options for seamless integration with TVs and other devices. Audio enhancements and surround technologies improve clarity and spatial sound performance.

Verdict: Both speakers offer strong performance, and the better choice depends on your preference for power, surround sound, and features.

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