Polk Audio MagniFi Mini AX vs Sonos Sub 4

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MagniFi Mini AX compared with Sub 4

	Polk AudioMagniFi Mini AX	SonosSub 4
Overview
Released
Released	March 2022	October 2024
Sound
Type
Type	Soundbar	Subwoofer
Dolby Atmos
Dolby Atmos	Yes	No
Drivers
Drivers	Two 19 mm tweeters and three 51 mm midrange drivers for left, centre and right channels; included wireless subwoofer has a down-firing 127 × 178 mm driver	Two 5 × 8 in elliptical woofers facing inwards (force-cancelling), in a ported cabinet
Amplifiers
Amplifiers	–	Two class-D digital amplifiers
Frequency response
Frequency response	–	As low as 25 Hz
Audio formats
Audio formats	PCM; Dolby Digital, Dolby Digital Plus, Dolby TrueHD and Dolby Atmos; DTS, DTS-HD Master Audio, DTS:X and DTS Virtual:X	–
Room tuning
Room tuning	Fourth-generation Stereo Dimensional Array (SDA) technology and 3D audio mode create virtual width and height; no up-firing height drivers. VoiceAdjust changes dialogue level; night mode limits bass and dynamics.	Trueplay; EQ balances automatically with the paired Sonos products
Connections
Wi-Fi
Wi-Fi	Yes	Yes
Bluetooth
Bluetooth	Yes	No
AirPlay
AirPlay	Yes	No
HDMI eARC
HDMI eARC	Yes	–
Voice assistants
Voice assistants	None	None
Wi-Fi
Wi-Fi	802.11a/n/ac	Wi-Fi 6 (802.11a/b/g/n/ac/ax), 2.4 GHz and 5 GHz
Bluetooth
Bluetooth	Bluetooth 5.0	–
Ports
Ports	One HDMI eARC/ARC input; digital optical; 3.5 mm analogue input; USB-A for firmware updates only; no HDMI video passthrough	10/100 Ethernet
Streaming
Streaming	Apple AirPlay 2; Chromecast Audio; Spotify Connect; Bluetooth	–
Multi-room
Multi-room	Optional SR2 wireless surround speakers; supplied subwoofer pairs automatically, with a stated maximum wireless separation of 9 m	Pairs with a compatible mains-powered Sonos product such as Arc Ultra or Era 300; two can be used with Arc Ultra
App
App	–	Sonos app (iOS and Android)
Design
Weight
Weight	–	11.79 kg
Controls
Controls	Soundbar buttons and supplied remote; OLED display. No built-in voice assistant (Tom’s Guide); compatible external Google Home devices can control Chromecast playback.	Join button
Mounting
Mounting	–	Stands upright or lies flat
Size
Size	Soundbar 366 × 104 × 79 mm; subwoofer 182 × 396 × 371 mm, W × D × H. Weight is not published in the maker’s specification table.	389 × 402 × 158 mm (H × W × D)
Colours
Colours	Black	Black, White
In the box
In the box	Soundbar, wireless subwoofer, remote, two AAA batteries, soundbar power supply and cord, subwoofer power cord, HDMI cable and printed guides. The contemporary maker release, reproduced by AV NIRVANA, states availability beginning 15 March 2022; its same-day report confirms it was available.	Sub 4, power cable (2 m), documentation