Polk Audio MagniFi Mini AX vs Polk Audio Signa S3

Every spec side by side, from each maker's published figures.

Only show differences

Better figure, where one is clearly better

Share comparison

MagniFi Mini AX compared with Signa S3

	Polk AudioMagniFi Mini AX	Polk AudioSigna S3
Overview
Released
Released	March 2022	2020
Sound
Type
Type	Soundbar	Soundbar
Channels
Channels	–	2.1
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 1.25 × 4.4 in oval midrange drivers and two 1 in tweeters; ported wireless subwoofer has a 5.25 in driver. Maker sheet's 165 mm parenthesis conflicts with the current maker table's 13.34 cm.
Frequency response
Frequency response	–	45 Hz–20 kHz system response (maker; no tolerance published)
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	Dolby Digital 5.1 decoding and PCM over HDMI ARC or optical, reproduced through a stereo 2.1 system; no Dolby Atmos or DTS Virtual:X (GearLab)
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; eight bass adjustment steps and three VoiceAdjust levels
Connections
Wi-Fi
Wi-Fi	Yes	Yes
Bluetooth
Bluetooth	Yes	Yes
AirPlay
AirPlay	Yes	No
HDMI eARC
HDMI eARC	Yes	No
Voice assistants
Voice assistants	None	None
Wi-Fi
Wi-Fi	802.11a/n/ac	Wi-Fi networking for Chromecast built-in; setup through the Google Home app
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	One HDMI ARC connection, Toslink optical and 3.5 mm AUX input; USB maintenance port, not normal playback; no separate HDMI video input or passthrough (AVForums)
Streaming
Streaming	Apple AirPlay 2; Chromecast Audio; Spotify Connect; Bluetooth	Chromecast audio from compatible music apps over Wi-Fi, plus Bluetooth playback
Multi-room
Multi-room	Optional SR2 wireless surround speakers; supplied subwoofer pairs automatically, with a stated maximum wireless separation of 9 m	Google Home grouping with other Chromecast-enabled speakers
App
App	–	Google Home for network setup, grouping and automatic overnight firmware updates
Design
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 power, source, Bluetooth and volume buttons; IR remote, HDMI CEC and IR learning; four status LEDs. Google Assistant music control requires a separate compatible speaker; no built-in voice assistant.
Mounting
Mounting	–	Rear keyhole hangers and supplied wall-mount spacers
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.	Current maker table gives soundbar 89.99 × 5.46 × 8.18 cm and subwoofer 17.07 × 34.04 × 30.99 cm, W × H × D. Maker sheet separately lists bar 898 × 56 × 83 mm and subwoofer 171 × 311 × 343 mm, with conflicting inch equivalents.
Colours
Colours	Black	Black
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, IR remote and AAA battery, two power cords, HDMI and optical cables, wall-mount spacers and literature (maker quick-start guide); information sheet additionally lists a soundbar power supply.