Polk Audio MagniFi Mini AX vs Polk Audio Signa S4

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MagniFi Mini AX compared with Signa S4

	Polk AudioMagniFi Mini AX	Polk AudioSigna S4
Overview
Released
Released	March 2022	December 2021
Sound
Type
Type	Soundbar	Soundbar
Channels
Channels	–	3.1.2
Dolby Atmos
Dolby Atmos	Yes	Yes
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	Seven soundbar drivers — two 25 mm tweeters, two 120 × 40 mm racetrack midrange drivers, one 25 mm centre full-range driver and two 66 mm elevation drivers; included subwoofer has a 150 mm woofer
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	Linear PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD and Dolby Atmos (maker manual); non-Atmos content can be upmixed for virtual height effects
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.	Movie, Music and Night modes; VoiceAdjust with three levels; bass adjustment
Connections
Wi-Fi
Wi-Fi	Yes	No
Bluetooth
Bluetooth	Yes	Yes
AirPlay
AirPlay	Yes	No
HDMI eARC
HDMI eARC	Yes	Yes
Voice assistants
Voice assistants	None	None
Wi-Fi
Wi-Fi	802.11a/n/ac	–
Bluetooth
Bluetooth	Bluetooth 5.0	Bluetooth 5.0; SBC codec; A2DP 1.3 and AVRCP 1.6; maker line-of-sight range approximately 10 m
Ports
Ports	One HDMI eARC/ARC input; digital optical; 3.5 mm analogue input; USB-A for firmware updates only; no HDMI video passthrough	One HDMI eARC/ARC connection, optical digital input, 3.5 mm analogue input and USB-A for firmware updates; no HDMI video passthrough input
Streaming
Streaming	Apple AirPlay 2; Chromecast Audio; Spotify Connect; Bluetooth	Bluetooth music playback; no Wi-Fi streaming or built-in voice assistant
Multi-room
Multi-room	Optional SR2 wireless surround speakers; supplied subwoofer pairs automatically, with a stated maximum wireless separation of 9 m	–
Design
Weight
Weight	–	2.9 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.	Top buttons and supplied remote; HDMI control and TV remote learning; remote lacks backlighting (WIRED)
Mounting
Mounting	–	Soundbar can be wall mounted; mounting template and spacers supplied
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.	Soundbar 1046 × 95 × 60 mm, W × D × H, 2.9 kg; subwoofer 200 × 328 × 280 mm, W × D × H, 4.1 kg. Main weight is bar only.
Colours
Colours	Black	Black; Signa S4D is an online-exclusive finish, not a different acoustic generation
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.	Soundbar, wireless subwoofer, remote, soundbar and subwoofer power cords, HDMI and optical cables, two AAA batteries, quick-start guide, registration and safety cards, wall template and spacers