Looking Beyond the Sonos Sub 4 Wireless Subwoofer? 6 Alternatives Worth a Look
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The Sonos Sub 4 Wireless Subwoofer delivers deep, dynamic bass through its ported enclosure and dual drivers. Its force-canceling architecture minimizes distortion, while WiFi connectivity allows flexible placement in your home theater. This model excels at system integration with Sonos soundbars, offering a clean, sculptural design that fits under sofas or stands upright. You get reliable performance with a simple plug-and-play setup using the Sonos app.
However, you might seek other sonos sub 4 alternatives for different reasons. Some buyers need a more compact unit for small rooms, while others want a complete 5.1 surround sound system with included rear speakers. You may also prefer a subwoofer with specific app-driven tuning or compatibility with a different brand’s soundbar. The alternatives listed here were chosen because their specifications overlap with the original. They share core traits like wireless connectivity and bass-focused designs, ensuring they can serve similar roles in your audio setup.
How these alternatives compare to Sonos Sub 4
ULTIMEA 5.1ch Soundbar with Wireless Subwoofer
The ULTIMEA Poseidon M80 differs by offering a complete 5.1ch system rather than a standalone subwoofer. It includes rear speakers for surround sound, whereas the Sonos Sub 4 focuses solely on deep bass integration with compatible soundbars. The ULTIMEA unit measures 23.6 inches wide and weighs 12.6 pounds, making it lighter but wider than the Sonos model. You get app control and a full surround experience, but you lose the Sonos ecosystem integration and DTS support. This option suits those wanting a complete audio package on a budget instead of a dedicated bass upgrade for an existing Sonos setup.
Sonos Sub Mini Compact Wireless Subwoofer
The Sonos Sub Mini is a compact alternative designed for small rooms. It measures 8.98 inches wide and 11.9 inches tall, significantly smaller than the Sonos Sub 4’s 15.3-inch width. It weighs only 14 pounds, compared to the Sub 4’s 26.5 pounds. While it shares the wireless connectivity and Sonos ecosystem benefits, it prioritizes space-saving design over raw output. You gain flexibility for tight spaces but sacrifice the deeper low-frequency extension and larger ported enclosure of the Sub 4. This choice is best for users with limited room who still want seamless Sonos integration without the bulk of the larger model.
Sonos Sub Mini White Compact Wireless Subwoofer
This white variant of the Sonos Sub Mini offers the same compact dimensions and weight as its black counterpart. It measures 8.98 inches in width and height, with a height of 11.9 inches and a weight of 14 pounds. It provides the same space-saving benefits and Sonos ecosystem compatibility as the Sub 4 but with reduced bass output due to its smaller size. You choose this if you prefer a white finish to match your decor and have limited space. It lacks the deep, dynamic bass capabilities of the larger Sub 4, making it a practical option for small rooms where aesthetics and footprint matter more than maximum volume.
WiiM Sub Pro Smart Wireless Subwoofer
The WiiM Sub Pro offers precise, app-tuned bass with flexible connectivity options. It measures 15.7 inches long and 11.9 inches high, weighing 35.2 pounds, which makes it heavier than the Sonos Sub 4. It delivers deep, low-distortion bass similar to the Sonos model but focuses on room-specific tuning via its app. You gain advanced control features and potentially broader compatibility beyond the Sonos ecosystem. However, you give up the specific force-canceling architecture and seamless integration with Sonos soundbars. This subwoofer is ideal for those who prioritize detailed tuning and connectivity flexibility over brand-specific ecosystem benefits.
Sony BRAVIA Theater Sub 8 Wireless Subwoofer
The Sony BRAVIA Theater Sub 8 is specialized for Sony ecosystem users. It measures 15.4 inches wide and 15.7 inches tall, weighing 25.9 pounds, closely matching the Sonos Sub 4’s footprint. It delivers deep bass and easy app control but offers no utility for non-Sony brands. Unlike the Sonos Sub 4, which integrates with various Sonos soundbars, this unit is best for Sony TV and soundbar owners. You gain specialized optimization for Sony gear but lose the flexibility to use it with other audio systems. This option is strictly for those committed to the Sony BRAVIA ecosystem rather than seeking a versatile, multi-brand compatible subwoofer.
Sony SASW3 200W Wireless Subwoofer
The Sony SASW3 200W Wireless Subwoofer is designed for Sony HT-A9 and HT-A7000 soundbar owners. It measures 18.7 inches wide and 19.5 inches long, making it larger than the Sonos Sub 4. It weighs 23.2 pounds and features 200W power handling. You get powerful, wireless bass that enhances movies and music within the Sony ecosystem. However, it lacks the flexibility to work with non-Sony soundbars, unlike the Sonos Sub 4. This subwoofer is a strong match for Sony users who want deep, clear low frequencies without extra cables, but it is not suitable for those with other brands or seeking a more compact design.
Quick picks
Our 7 picks
Sonos Sub 4 Wireless Subwoofer
Best for: Sonos soundbar owners seeking integrated bass
- Enclosure Type
- Ported
- Connectivity
- WiFi
- Application
- Soundbars
- Dimensions
- 6.22 × 15.3 × 15.8 inches
- Weight
- 26.5 pounds
View on Amazon: Sonos Sub 4 Wireless Subwoofer Affiliate link
The Sonos Sub 4 is a wireless subwoofer designed to pair with Sonos soundbars like the Arc or Beam. It features dual Sonos-engineered drivers in a ported enclosure to enhance low-frequency output. The force-canceling architecture reduces distortion, while WiFi connectivity allows flexible placement. Weighing 26.5 pounds and measuring 15.8 inches tall, it offers a sculptural design available in white or black.
Pros
- Dual Sonos-engineered drivers for deep bass
- Ported enclosure enhances low-frequency output
- Force-canceling architecture reduces distortion
- WiFi connectivity for flexible placement
- Versatile upright or horizontal positioning
Cons
- Only connects via WiFi, no Bluetooth
- No physical remote included
- Requires Sonos app for setup
Good fit if
- You own a Sonos Arc, Arc Ultra, or Beam soundbar
- You want a wireless subwoofer with flexible placement options
- You prefer a sculptural design that matches your Sonos system
Skip if
- You need Bluetooth connectivity for direct phone pairing
- You are not using a Sonos soundbar
- You want a subwoofer with a physical remote control
Verdict: Sonos Sub 4 White Wireless Subwoofer is a strong choice for Sonos soundbar owners seeking deep, distortion-free bass. Its ported design and WiFi flexibility make it ideal for those prioritizing system integration over standalone wireless convenience.
ULTIMEA 5.1ch Soundbar with Wireless Subwoofer
Best for: complete 5.1 surround sound setups
- Woofer Size
- 5.25"
- Power Handling
- 312W Peak
- Connectivity
- Wireless
- Application
- Home Theater
- Dimensions
- 3.54 × 23.6 × 2.76 inches
- Weight
- 12.6 pounds
View on Amazon: ULTIMEA 5.1ch Soundbar with Wireless Subwoofer Affiliate link
The ULTIMEA Poseidon M80 is a 5.1 channel surround sound system featuring a 5.25-inch wireless subwoofer and 312W peak power. It includes two wired rear speakers and supports Dolby Atmos via HDMI eARC. This setup delivers deeper bass and precise sound placement for movies and games. It suits you if you want a complete home theater package with app control and multiple EQ modes for different content types.
Pros
- 5.25-inch wireless subwoofer for deep bass
- 312W peak power output
- Includes two wired rear surround speakers
- HDMI eARC connection for Dolby Atmos
- ULTIMEA app with 6 EQ modes
Cons
- Smaller 5.25-inch subwoofer driver compared to larger competitors
- Does not support DTS audio decoding
- Rear speakers require wired connection to the subwoofer
Good fit if
- You want a complete 5.1 system with included rear speakers
- You prefer app-based control for EQ and bass levels
- You need HDMI eARC for high-bandwidth audio formats
Skip if
- You require DTS audio format support
- You prefer wireless rear speakers for flexible placement
- You need a larger subwoofer driver for maximum impact
Verdict: ULTIMEA Poseidon M80 5.1ch Soundbar fits you if you want a complete 5.1 system with included rear speakers and app control, though it lacks DTS support and wireless rear options.
Sonos Sub Mini Compact Wireless Subwoofer
Best for: small rooms and compact setups
- Woofer Size
- Dual 6"
- Enclosure Type
- Sealed
- Connectivity
- Wireless, WiFi
- Size
- Single
- Dimensions
- 8.98 × 8.98 × 11.9 inches
- Weight
- 14 pounds
View on Amazon: Sonos Sub Mini Compact Wireless Subwoofer Affiliate link
The Sonos Sub Mini is a compact wireless subwoofer designed for smaller spaces. It features an acoustically sealed cabinet with dual custom woofers that face inward to cancel distortion. Trueplay tuning adapts bass to your room's acoustics, though it requires an iOS device. At 14 pounds and roughly 9 inches wide, it offers dramatic depth when paired with soundbars like the Sonos Beam or Ray.
Pros
- Acoustically sealed cabinet with dual inward-facing woofers for distortion cancellation
- Trueplay tuning technology adapts bass to room acoustics
- Compact dimensions of 8.98 x 8.98 x 11.9 inches
- Wireless connectivity for flexible placement
Cons
- Trueplay tuning requires a supported iOS device
- Smaller physical size compared to full-size Sonos Sub models
- Single unit configuration may lack the output of multi-sub setups
Good fit if
- You have limited floor space and need a compact subwoofer
- You use an iOS device for room calibration
- You pair the sub with a Sonos Beam or Ray soundbar
Skip if
- You require Android-based room tuning capabilities
- You need a high-output sub for large rooms
- You prefer a larger, more powerful subwoofer
Verdict: Sonos Sub Mini Compact Wireless Subwoofer is a practical choice for users with small rooms who prioritize space-saving design and iOS-based tuning over raw output.
Sonos Sub Mini White Compact Wireless Subwoofer
Best for: small rooms and Sonos soundbar pairs
- Woofer Size
- Dual 6"
- Enclosure Type
- Sealed
- Connectivity
- Wireless, WiFi
- Size
- Single
- Dimensions
- 8.98 × 8.98 × 11.9 inches
- Weight
- 14 pounds
View on Amazon: Sonos Sub Mini White Compact Wireless Subwoofer Affiliate link
The Sonos Sub Mini is a compact wireless subwoofer designed for smaller spaces. It features an acoustically sealed cabinet with dual custom woofers that face inward to cancel distortion. Trueplay tuning adapts the bass to your room's acoustics, requiring an iOS device. Weighing 14 pounds and measuring 8.98 by 11.9 inches, it fits well with soundbars like the Sonos Beam or Ray.
Pros
- Acoustically sealed cabinet with dual inward-facing woofers
- Force-canceling effect neutralizes distortion
- Trueplay tuning adapts bass to room acoustics
- Compact 14-pound design fits small spaces
Cons
- Requires an iOS device for Trueplay tuning
- Single driver configuration limits deep bass extension compared to larger subs
- No remote control included for direct operation
Good fit if
- You have a small room or limited space
- You already own a Sonos Beam or Ray soundbar
- You want a discreet subwoofer that blends into decor
Skip if
- You need deep bass for large rooms or home theater
- You do not have an iOS device for Trueplay
- You want a subwoofer with multiple driver configurations
Verdict: Sonos Sub Mini White Compact Wireless Subwoofer is a practical choice for Sonos ecosystem users with small rooms. It delivers clean bass without taking up much space, but you must have an iOS device to tune it properly.
WiiM Sub Pro Smart Wireless Subwoofer
Best for: precise, app-tuned bass with flexible connectivity
- Woofer Size
- 8-inch
- Power Handling
- 250 W
- Amplifier Type
- Class-D
- Connectivity
- Wireless, RCA, Wi-Fi 6E, Ethernet
- Dimensions
- 15.7 × 12.7 × 11.9 inches
- Weight
- 35.2 pounds
View on Amazon: WiiM Sub Pro Smart Wireless Subwoofer Affiliate link
The WiiM Sub Pro uses an 8-inch woofer and 250-watt Class-D amplifier to deliver bass down to 25 Hz. It features Wi-Fi 6 and Bluetooth 5.3 for flexible placement, plus an RCA input for wired connections. The included app offers 10-band parametric EQ and AI RoomFit auto-calibration. This subwoofer suits you if you want precise, room-tuned bass with modern wireless connectivity options.
Pros
- 8-inch high-excursion woofer delivers deep bass to 25 Hz
- 250-watt Class-D amplifier provides high power handling
- Wi-Fi 6 and Bluetooth 5.3 enable flexible wireless placement
- 10-band parametric EQ and AI RoomFit auto-calibration in the app
Cons
- Bass output may be temporarily limited during Alexa Multi-Room Music, Roon Ready, LMS, or Google Cast playback
- Connectivity relies on Wi-Fi 6 and Bluetooth 5.3 rather than dedicated 2.4 GHz wireless protocols
- Physical dimensions are 15.7 x 12.7 x 11.9 inches, which is bulkier than compact alternatives
Good fit if
- You want precise bass tuning via 10-band parametric EQ and auto-calibration
- You need compatibility with any receiver or soundbar via RCA input
- You prefer modern Wi-Fi 6 and Bluetooth 5.3 connectivity
Skip if
- You require a compact subwoofer that fits in small spaces
- You need a subwoofer that integrates seamlessly with multi-room music services without limitations
- You prefer a wireless system that does not rely on Wi-Fi or Bluetooth
Verdict: The WiiM Sub Pro Smart Wireless Subwoofer offers deep, low-distortion bass with precise app-driven control. It fits you if you value flexible connectivity and room-specific tuning over compact size.
Sony BRAVIA Theater Sub 8 Wireless Subwoofer
Best for: Sony soundbar and TV owners
- Connectivity
- Wireless
- Application
- Soundbars
- Dimensions
- 6.7 × 15.4 × 15.7 inches
- Weight
- 25.9 pounds
View on Amazon: Sony BRAVIA Theater Sub 8 Wireless Subwoofer Affiliate link
The Sony BRAVIA Theater Sub 8 is a 200 mm wireless subwoofer designed for deep, impactful bass. It features an aluminum driver and supports dual subwoofer playback for room-filling sound. You can control it via the BRAVIA Connect app or a compatible TV remote. Its compact 6.7-inch depth and hidden cable management keep your space clutter-free. This unit suits users with Sony soundbars or BRAVIA TVs seeking seamless integration.
Pros
- 200 mm aluminum driver for deep low-frequency response
- Supports dual subwoofer playback for increased sound pressure
- Controlled via BRAVIA Connect app or TV remote
- Hidden cable management for a clean look
- Direct TV connection for bass boost without a soundbar
Cons
- Limited to Sony BRAVIA ecosystem compatibility
- No mention of Bluetooth connectivity
- Requires compatible BRAVIA TV or Sony soundbar for full features
Good fit if
- You own a Sony BRAVIA soundbar or TV
- You want app-based control for sound settings
- You prefer a compact subwoofer with hidden cables
Skip if
- You use a non-Sony soundbar or receiver
- You need universal Bluetooth connectivity
- You require a subwoofer with a physical remote control
Verdict: Sony BRAVIA Theater Sub 8 Wireless is a specialized subwoofer for Sony ecosystem users. It delivers deep bass and easy app control if you own compatible BRAVIA gear, but it offers no utility for other brands.
Sony SASW3 200W Wireless Subwoofer
Best for: Sony HT-A9 and HT-A7000 soundbar owners
- Woofer Size
- 160mm
- Power Handling
- 200W
- Enclosure Type
- Bass Reflex
- Connectivity
- Wireless
- Dimensions
- 19.5 × 18.7 × 10.8 inches
- Weight
- 23.2 pounds
View on Amazon: Sony SASW3 200W Wireless Subwoofer Affiliate link
The Sony SASW3 is a compact wireless subwoofer designed to add deep bass to your home theater. It features a 200W power handling rating and a 160mm driver housed in a bass-reflex enclosure. This setup delivers clear, distortion-free low frequencies for movies and music. It connects wirelessly to compatible Sony soundbars, making it a solid option for users seeking enhanced cinematic audio without complex wiring.
Pros
- 200W power handling for impactful bass
- 160mm driver size for deep rumble
- Wireless connectivity simplifies setup
- Bass-reflex enclosure enhances low-end response
Cons
- Limited to Sony HT-A9 and HT-A7000 compatibility
- No mention of app control or EQ settings
- Heavier build at 23.2 pounds
Good fit if
- You own a Sony HT-A9 home theater system
- You want a wireless sub for a Sony HT-A7000 soundbar
- You prefer a compact subwoofer with high power handling
Skip if
- You use a non-Sony soundbar or home theater system
- You need multi-room audio support across different brands
- You require adjustable bass levels via a mobile app
Verdict: Sony SASW3 200W Wireless Subwoofer is a strong match for Sony soundbar owners who want powerful, wireless bass without extra cables. It delivers clear, deep low frequencies that enhance movies and music, provided you stick with the Sony ecosystem.
Specifications side by side
| Spec | Sonos Sub 4 Wireless Subwoofer | ULTIMEA 5.1ch Soundbar with Wireless Subwoofer | Sonos Sub Mini Compact Wireless Subwoofer | Sonos Sub Mini White Compact Wireless Subwoofer | WiiM Sub Pro Smart Wireless Subwoofer | Sony BRAVIA Theater Sub 8 Wireless Subwoofer | Sony SASW3 200W Wireless Subwoofer |
|---|---|---|---|---|---|---|---|
| Woofer Size | not stated | 5.25" | Dual 6" | Dual 6" | 8-inch | not stated | 160mm |
| Power Handling | not stated | 312W Peak | not stated | not stated | 250 W | not stated | 200W |
| Amplifier Type | not stated | not stated | not stated | not stated | Class-D | not stated | not stated |
| Enclosure Type | Ported | not stated | Sealed | Sealed | not stated | not stated | Bass Reflex |
| Connectivity | WiFi | Wireless | Wireless, WiFi | Wireless, WiFi | Wireless, RCA, Wi-Fi 6E, Ethernet | Wireless | Wireless |
| Application | Soundbars | Home Theater | not stated | not stated | not stated | Soundbars | not stated |
| Size | not stated | not stated | Single | Single | not stated | not stated | not stated |
| Dimensions | 6.22 × 15.3 × 15.8 inches | 3.54 × 23.6 × 2.76 inches | 8.98 × 8.98 × 11.9 inches | 8.98 × 8.98 × 11.9 inches | 15.7 × 12.7 × 11.9 inches | 6.7 × 15.4 × 15.7 inches | 19.5 × 18.7 × 10.8 inches |
| Weight | 26.5 pounds | 12.6 pounds | 14 pounds | 14 pounds | 35.2 pounds | 25.9 pounds | 23.2 pounds |
| Color | White | Matte Black | Black | White | Black | Black | Black |
| Model | SUBG4US1 | U2524 | SUBM1US1BLK | SUBM1US1 | WiiM Sub Pro | SASW8.UC2 | CRT2SNSASW3 |
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Frequently asked questions
Is the Sonos Sub 4 the best subwoofer for Sonos soundbars?
Yes, the Sonos Sub 4 is the top pick for Sonos soundbar owners. Its ported design and WiFi flexibility ensure deep, distortion-free bass. It integrates seamlessly with your existing Sonos ecosystem, prioritizing system integration over standalone convenience. This makes it the ideal choice for those seeking a unified audio experience without extra cables.
What is the best budget alternative to the Sonos Sub 4?
The ULTIMEA Poseidon M80 is the best budget option. It provides a complete 5.1 surround sound system, including rear speakers, rather than just a subwoofer. While it lacks DTS support and wireless rear speakers, it offers app control and a full surround setup for users who want a comprehensive audio solution without buying separate components.
Are there smaller Sonos subwoofers available for compact rooms?
Yes, the Sonos Sub Mini is available in both black and white. It measures 8.98 inches wide and 11.9 inches high, weighing only 14 pounds. This compact design saves space while delivering clean bass. It is a practical choice for small rooms, though you must use an iOS device to tune it properly for optimal performance.
Which subwoofer offers the best app-driven tuning for precise bass?
The WiiM Sub Pro Smart Wireless Subwoofer offers precise, app-driven control. It delivers deep, low-distortion bass and fits users who value flexible connectivity and room-specific tuning. Measuring 15.7 inches in length and weighing 35.2 pounds, it prioritizes audio precision and customization over a compact footprint, making it ideal for those who want detailed control.
Is the Sony BRAVIA Theater Sub 8 compatible with non-Sony brands?
No, the Sony BRAVIA Theater Sub 8 is specialized for Sony ecosystem users. It delivers deep bass and easy app control but offers no utility for other brands. If you own compatible BRAVIA gear, it is a strong choice. However, it is not recommended if you plan to use it with soundbars or TVs from other manufacturers.
Does the Sony SASW3 provide powerful wireless bass for Sony soundbars?
Yes, the Sony SASW3 200W Wireless Subwoofer is a strong match for Sony soundbar owners. It delivers clear, deep low frequencies that enhance movies and music without extra cables. Weighing 23.2 pounds, it fits users who want powerful wireless bass. Note that it works best only if you stick with the Sony ecosystem for compatibility.
How does the Sonos Sub Mini differ from the Sonos Sub 4?
The Sonos Sub Mini is significantly smaller, measuring 8.98 inches square and weighing 14 pounds. It is designed for small rooms and compact setups, prioritizing space-saving design over raw output. In contrast, the Sonos Sub 4 is larger and focuses on deep, distortion-free bass. The Mini requires an iOS device for proper tuning, similar to the Sub 4.