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Polk Audio MagniFi Mini AX vs Polk Audio Signa S4

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Product A: Polk Audio

MagniFi Mini AX

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B

Product B: Polk Audio

Signa S4

50 of 98 known

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All 98 fields

Every value links to where we found it.

Only differences

APolk Audio MagniFi Mini AX

BPolk Audio Signa S4

Audio system

8 of 17 differ

System channel configurationiMaker-stated channel layout of the exact package, such as 5.1.2. This can include virtual channels. It is not a count of physical drivers. Optional speakers do not count.

Not available

3.1.22Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet: Dolby Atmos 3.1.2 sound bar with wireless subwoofer.

Physical drivers in the packageiCount of physical active speaker drivers across the supplied bar, subwoofer and rear speakers. Passive radiators, microphones and virtual channels do not count. A coaxial driver, such as KEF Uni-Q, counts once, as makers count it.

62Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 complete inventory: two bar tweeters, three bar mids and one included subwoofer driver.

82Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Seven drivers in the bar plus one woofer in the subwoofer, from the infosheet driver list. The Denon page copy says eleven drivers. That copy does not match the maker driver list and is not used.

Physical drivers in the bariCount of physical active speaker drivers in the soundbar alone. Passive radiators and virtual channels do not count. A coaxial driver, such as KEF Uni-Q, counts once, as makers count it.

52Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 lists five physical bar drivers.

72Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Up-firing drivers in the packageiPhysical active drivers explicitly firing upwards across the supplied package. Virtual height channels and passive radiators do not count. A driver that fires upwards only when the bar is wall mounted is not counted.

06Reviewwhathifi.com/reviews/polk-magnifi-mini-axRead 8 October 2026Build & facilities explicitly states no upward-firing drivers. Included subwoofer is down-firing.

22Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Driver layoutiPublished physical driver layout for the supplied components. A row names one driver type in one component. Do not translate channel count into driver count.

APolk Audio MagniFi Mini AX

Component	Driver type	Count	Diameter (mm)	Orientation
Soundbar	L/R tweeter	2	19	Not available
Soundbar	L/C/R midrange	3	51	Not available
Subwoofer	Oval woofer, 127 × 178 mm	1	Not available	Down-firing

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2. Literal metric driver sizes. Oval subwoofer has two axes, so no single diameter is stored. Down-firing is stated in Consumer Benefits.

BPolk Audio Signa S4

Component	Driver type	Count	Diameter (mm)	Orientation
Soundbar	Tweeter (left and right)	2	25	Front-firing
Soundbar	Racetrack midrange (left and right), 120 × 40 mm	2	Not available	Front-firing
Soundbar	Full-range center	1	25	Not available
Soundbar	Elevation (left and right)	2	66	Up-firing
Subwoofer	Woofer	1	150	Down-firing

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet lists two 1 in tweeters, two 4.7 x 1.6 in racetrack mids, one 1 in full-range center and two 2.6 in elevation drivers in the bar, and one 5.9 in woofer in the subwoofer. Metric sizes as published. Elevation and subwoofer firing directions come from the Trusted Reviews review.

Separate subwoofer includediA separate powered subwoofer is supplied with the reference package. A built-in woofer does not count.

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 box contents.

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Included subwoofer connectioniAudio link used by the supplied separate subwoofer. Wireless subwoofers can still require an AC power cable.

Wireless3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed page 5 explicitly wireless audio link. Subwoofer separately requires wall power.

Wireless2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Included subwoofer driver diameteriPublished diameter of an active driver in the supplied separate subwoofer. Do not use enclosure size or passive radiator size.

Not available

150mm2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet: woofer 5.9 in / 15 cm. Some retailer copy says 5.25 in. The maker figure is stored.

Rear speakers includediCount of separate rear speaker enclosures supplied with the reference package. Detachable bar ends count when usable as rears. Optional rear speakers do not count.

02Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 box contents supply no rears. SR2 speakers are explicitly optional.

02Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026What is in the Box lists a sound bar and a subwoofer only. The Trusted Reviews review says rear speakers cannot be added.

Included rear speaker connectioniAudio link to the supplied rear speaker enclosures. Their power connection is separate.

Not available

Not available

Detachable rear speakersiThe bar has supplied detachable end sections usable as separate rear speakers.

No2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 exact package has one complete bar, with separate SR2 rears available optionally.

Not available

Compatible optional subwoofersiMaker-named compatible additional subwoofer models. These do not contribute to the reference package layout, dimensions or measurements.

Not available

Not available

Compatible optional rear speakersiMaker-named compatible additional rear speaker models. These do not contribute to the reference package layout, dimensions or measurements.

Polk SR2 Wireless Surround Speakers2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 names optional SR2 Wireless Surround Speakers.

Not available

Total RMS audio output poweriMaker-stated RMS or rated continuous amplifier output for the exact supplied package. Peak or unspecified maximum claims do not qualify. Distortion, load and rating conditions belong in the source note. Power consumption is separate.

Not available

Not available

Total peak audio output poweriMaker-stated peak or maximum amplifier output for the exact supplied package. This is separate from RMS or continuous output and from electrical consumption. Rating conditions belong in the source note.

Not available

Not available

Published frequency response lower limitiMaker-published lower limit for the exact supplied package. Tolerance and test conditions belong in the source note. Reviewer extension measurements are separate.

Not available

Not available

Published frequency response upper limitiMaker-published upper limit for the exact supplied package. Tolerance and test conditions belong in the source note.

Not available

Not available

Audio formats

4 of 9 differ

Dolby AtmosiExplicit support for Dolby Atmos playback. Transport codec and connection restrictions belong in source notes.

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 supported formats. Manual page 3 excludes Atmos over optical. Virtual height, no up-firing drivers.

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

DTS:XiExplicit support for DTS:X playback. Virtual surround processing alone does not establish DTS:X decoding.

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 supported formats. Manual page 3 excludes DTS:X over optical.

No4Reviewtrustedreviews.com/reviews/polk-signa-s4Read 13 October 2026Review states the sound bar decodes PCM and Dolby formats and has no support for any DTS format. The maker manual lists no DTS format.

Supported audio formatsiAudio formats explicitly decoded by the device. Codec and connection restrictions belong in source notes. Bluetooth codecs and music-file formats are separate.

PCM, Dolby Mono, Dolby Digital, Dolby Digital Plus, Dolby Atmos, Dolby Atmos TrueHD, DTS Digital Surround, DTS-HD, DTS-HD Master Audio, DTS:X, DTS Virtual:X2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 supported audio formats list. No per-input channel maxima are published.

Linear PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Specifications page: Linear PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD and Dolby Atmos. No DTS format is listed.

Audio formats by connectioniExplicitly supported audio decoding combinations. Max input channels counts decoded input audio channels, including LFE. A 5.1 layout has 6 channels and 7.1 has 8. Output speaker layouts and Atmos objects do not count. Atmos over Dolby Digital Plus and over Dolby TrueHD are separate rows. Format support on one input does not prove support on another.

APolk Audio MagniFi Mini AX

Not available

BPolk Audio Signa S4

Connection	Format
HDMI eARC	Dolby Atmos

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Maker states Dolby Atmos needs the HDMI eARC connection between sound bar and TV. No other connection-specific format limits are published.

Music file formatsiPublished local or network music-file playback formats. Playback route and app restrictions belong in source notes.

Not available

Not available

Max wired audio sample rateiHighest explicitly published supported sample rate for decoded wired audio input. Name the exact HDMI, ARC, eARC or optical connection and codec in source notes. This is the published route limit, not proof of a device-wide maximum across all inputs. Local or network music-file limits and Bluetooth do not qualify. A chipset limit is not device evidence.

Not available

48kHz3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Specifications page lists sampling frequency 32, 44.1 and 48 kHz for the sound bar. It does not name the connection or codec.

Max music file sample rateiHighest explicitly published supported local or network music-file sample rate. Name the playback route and file format in source notes. This is the published route and format limit, not proof of a device-wide maximum across all music formats. Wired HDMI or optical input and Bluetooth are separate.

Not available

Not available

Max wired audio bit depthiHighest explicitly published supported bit depth for decoded wired audio input. Name the exact HDMI, ARC, eARC or optical connection and codec in source notes. This is the published route limit, not proof of a device-wide maximum across all inputs. Local or network music-file limits and Bluetooth do not qualify.

Not available

Not available

Max music file bit depthiHighest explicitly published supported local or network music-file bit depth. Name the playback route and file format in source notes. This is the published route and format limit, not proof of a device-wide maximum across all music formats. Wired HDMI or optical input and Bluetooth are separate.

Not available

Not available

Connectivity

5 of 17 differ

Ports on the bariPhysical connectors on the soundbar alone. Record input, output, ARC or eARC, service, subwoofer and power roles explicitly. Count identical connectors per row. Component connectors are described in source notes.

APolk Audio MagniFi Mini AX

Connector	Count	Role
HDMI	1	TV audio input through ARC/eARC
Optical	1	Digital audio input
3.5 mm audio	1	Analog AUX audio input
USB-A	1	Firmware updates
DC power	1	Power input from external adapter

Source3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed page 11 back panel, sheet page 2 counts and connector types. USB conflicts: manual says MP3 playback only, later 2023 sheet and current maker page specify firmware updates. Stored current service role, music-file playback omitted.9Reviewtomsguide.com/reviews/polk-magnifi-mini-axRead 8 October 2026Set up and connectivity exact Mini AX hands-on review explicitly USB service only. This corroborates the current maker page and 2023 information sheet despite the older manual MP3 footnote.

BPolk Audio Signa S4

Connector	Count	Version	Role
HDMI	1	2.1	TV connection with eARC or ARC
Optical	1	Not available	Digital audio input
3.5 mm audio	1	Not available	Analog AUX audio input
USB-A	1	Not available	Firmware updates
AC power	1	Not available	Soundbar power input

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet inputs: one HDMI eARC output, one optical input, one 3.5 mm analog input, Bluetooth and one USB-A for firmware updates. The manual also describes a hidden USB music input. HDMI 2.1 comes from the launch announcement text on Home Theater Forum and the Greentoe retailer table, not from the maker documents.

HDMI ARC

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed page 3 explicitly HDMI eARC/ARC connection.

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026

HDMI eARC

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed page 3 explicitly HDMI eARC/ARC connection.

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

HDMI-CEC

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed page 20 troubleshooting explicitly requires HDMI CEC/ARC enabled for HDMI ARC TV connection.

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026

HDMI video passthroughiCan pass video from a dedicated HDMI source input to a television output. ARC or eARC alone does not qualify.

No7Reviewecoustics.com/reviews/polk-audio-magnifi-mini-axRead 8 October 2026Connections and Cons explicitly no extra HDMI input. Only TV ARC/eARC, optical and AUX audio connectors are provided. No dedicated source-video route.9Reviewtomsguide.com/reviews/polk-magnifi-mini-axRead 8 October 2026Set up and connectivity explicitly says HDMI passthrough is unavailable because the bar has only one HDMI port.

No3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026The only HDMI connector is the TV eARC/ARC connection. There is no HDMI source input.

Video passthrough modesiPublished supported passthrough combinations, not inferred maxima at untested resolutions. State chroma, bit depth, HDR and firmware restrictions in source notes.

Not available

Not available

HDR passthrough formats

Not available

Not available

VRR passthrough

Not available

Not available

ALLM passthrough

Not available

Not available

HDCP versioniHighest HDCP version the maker states for an HDMI port of the soundbar, such as 2.3. When the source inputs and the TV output differ, the source input version is stored. A bar with no HDMI input stores the version of its TV output, also when that output carries video from a built-in streaming player.

Not available

Not available

Bluetooth audio inputiCan receive audio from a Bluetooth source. A Bluetooth remote alone does not qualify.

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed page 14 pairs a phone or tablet for music playback.

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Bluetooth versioniPublished version of the soundbar audio connection. An optional remote or detachable rear can use a different version.

5.02Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 streaming table explicitly 5.0.

5.03Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Specifications page: Bluetooth Version 5.0, Power Class 2, A2DP 1.3 and AVRCP 1.6.

Bluetooth audio codecsiExplicitly supported codecs for received Bluetooth audio. A Bluetooth version alone does not establish a codec.

SBC, AAC6Reviewwhathifi.com/reviews/polk-magnifi-mini-axRead 8 October 2026Build & facilities exact Mini AX input table explicitly Bluetooth SBC and AAC.

SBC3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Specifications page: corresponding codec SBC.

Wi-Fi

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed page 7 describes network music streaming and updates.

Not available

Wi-Fi standardiPublished Wi-Fi standards for the soundbar, written as 802.11 names without IEEE, such as "802.11a/b/g/n/ac/ax". A Wi-Fi generation is written as its standard, so Wi-Fi 5 is "802.11ac" and Wi-Fi 6 is "802.11ax". Do not infer the standard from frequency bands.

802.11a/n/ac2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 literally 802.11 a/n/ac.

Not available

Wi-Fi bandsiPublished radio bands, such as 2.4 GHz and 5 GHz.

2.4 GHz, 5 GHz4Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw99d4e121/downloads/magnifi-mini-ax-safetydoc-na.pdfRead 8 October 2026PDF page 3 radio table states Wi-Fi operating frequencies in 2.4 GHz and 5 GHz bands. Separate 5.8 GHz speaker link is not counted as a Wi-Fi band.

Not available

Built-in Ethernet speediRated speed of the built-in port. An optional adapter does not count.

Not available

Not available

Streaming and control

5 of 8 differ

Streaming protocolsiNamed network playback protocols, such as AirPlay 2, Google Cast, Spotify Connect and Tidal Connect. Bluetooth is separate.

AirPlay 2, Google Cast, Spotify Connect1Maker product pagepolkaudio.com/en-us/product/sound-bars/magnifi-mini-ax/300410.htmlRead 8 October 2026Streaming table. The maker calls Google Cast Chromecast built-in. Spotify Connect may require the firmware update noted on the info sheet.

Not available

Voice assistantsiNamed assistants supported by the soundbar. Built-in and external-device routes and market restrictions belong in source notes.

Google Assistant, Siri3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed pages 12 to 13: Google Assistant through an external Assistant-enabled speaker, Siri through an Apple device with AirPlay. No built-in assistant claimed.

Not available

Built-in microphoneiPhysical microphone in the bar for voice or calibration. An external setup phone or remote microphone does not count.

Not available

Not available

Microphone mute controliA physical control on the soundbar explicitly disables its built-in voice microphone. State whether this is an electrical switch or software-controlled button when known.

Not available

Not available

Companion apps

Google Home3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed page 12 names Google Home for Wi-Fi setup.

Not available

Companion app platforms

Android, iOS3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed page 12 explicitly Android and iOS.

Not available

Multiroom audioiCan play synchronised audio with other rooms through a supported network platform. Optional surround expansion alone does not qualify.

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed pages 12 to 13 explicitly synchronised Chromecast and AirPlay playback across rooms.

Not available

Remote includediA separate remote control supplied with the reference package. Phone apps and TV remotes do not count.

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed page 1 box contents and page 6 remote setup.

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

Sound processing

2 of 7 differ

Sound modes

Movie, 3D, Night, Music3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed page 16 lists Movie, 3D, Night and Music. All Channel Music requires optional SR2 rears and is excluded from stock configuration.

Movie, Music, Night2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Automatic room calibrationiExplicit acoustic measurement or analysis used to adapt playback to the room. Manual EQ alone does not qualify. Setup phone requirements belong in source notes.

Not available

Not available

Room calibration system

Not available

Not available

Dialogue enhancementiA dialogue or voice mode counts, also when the maker lists it as an EQ preset.

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed page 17 Voice Adjust changes dialogue level.

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Night mode

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed page 16 reduces bass and dynamics and improves voice intelligibility.

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Equalizer controlsiPublished user-adjustable EQ controls. Bass and treble controls are distinct from multi-band EQ.

Bass Adjust, Voice Adjust3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Printed page 17 separate bass and Voice Adjust controls. No multi-band EQ inferred.

Bass Adjust2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

TV speaker integrationiNamed features allowing compatible television speakers to play with the bar. TV models and connection requirements belong in source notes.

Not available

Not available

Power

3 of 6 differ

Published operating poweriMaker-published operating electrical consumption of the soundbar alone. Included subwoofer and rear-speaker consumption do not count. Keep workload and method in source notes. Audio amplifier output is separate.

Not available

40W3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Sound bar specifications: power consumption 40 W. The subwoofer is listed separately at 40 W.

Published standby poweriMaker-published non-networked standby consumption of the bar alone. Networked standby and other components are separate.

Not available

1.5W3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Sound bar standby mode 1.5 W. Deep standby mode 0.3 W. The sound bar has no network standby.

Published networked standby poweriMaker-published networked standby consumption of the bar alone. Enabled radio and network conditions belong in source notes.

Not available

Not available

Power supplyiPublished AC input range or external DC adapter arrangement. Electrical input ratings are not operating consumption.

External soundbar adapter: 100 to 240 V AC, 50/60 Hz input, 15 V DC, 4 A output. Included subwoofer uses a separate AC power cord.4Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw99d4e121/downloads/magnifi-mini-ax-safetydoc-na.pdfRead 8 October 2026PDF page 4 external PSU S065-1A150400M2: 100 to 240 VAC, 50/60 Hz, 15 VDC, 4 A. Its 60 W output is adapter capability. Its 0.21 W no-load figure is not soundbar standby consumption. Manual printed page 5 separately connects subwoofer AC cord.

Sound bar: AC 100 to 240 V, 50/60 Hz. The wireless subwoofer has its own power cord, AC 100 to 240 V, 50/60 Hz.3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026

Detachable rear battery lifeiMaker-stated runtime of the supplied detachable rear speakers. Volume, mode and recharge conditions belong in source notes.

Not available

Not available

Detachable rear charge timeiMaker-stated full recharge time of supplied detachable rear speakers. Charging route belongs in source notes.

Not available

Not available

Measured

None of 8 known

Low-frequency extension (measured)iReviewer-measured lower extension for the exact tested package. Test threshold, mode, room correction and configuration belong in source notes.

Not available

Not available

High-frequency extension (measured)iReviewer-measured upper extension for the exact tested package. Test threshold and configuration belong in source notes.

Not available

Not available

Max sound pressure (measured)iReviewer-measured maximum sound pressure. Signal, distance, sound mode and supplied or optional speaker configuration belong in source notes.

Not available

Not available

Frequency response deviation (measured)iReviewer-measured standard error against the stated target. Target, averaging range, preset and test method belong in source notes.

Not available

Not available

Measured latencyiReviewer-measured audio latency. Keep source/TV, firmware, codec, synchronisation correction and exact tested speaker configuration in source notes. Negative offsets are valid when the method reports them.

Not available

Not available

Operating power (measured)iReviewer-measured operating consumption of the soundbar alone. Optional or supplied external speakers do not count. Workload and enabled radio conditions belong in source notes.

Not available

Not available

Standby power (measured)iReviewer-measured bar-only standby consumption. Network state and test conditions belong in source notes.

Not available

Not available

Soundbar weight (measured)iReviewer-measured bar-only weight. Excludes subwoofer, rears, mounting hardware and cables.

Not available

Not available

Dimensions and weight

6 of 6 differ

Soundbar dimensionsiBar alone in its normal tabletop orientation, without detachable rears, wall brackets or external cables. A source that includes detachable ends must use component_dimensions instead. A size labelled L x W x H, as on Amazon, is width x depth x height.

Width366Height79Depth104mm(14.4 × 3.1 × 4.1 in)2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 W × D × H: 366 × 104 × 79 mm. Stored literal metric dimensions.

Width1,046Height60Depth95mm(41.2 × 2.4 × 3.7 in)2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet gives sound bar W x D x H as 1046 x 95 x 60 mm.

Soundbar weightiBar alone, without detachable rears, subwoofer, wall brackets or external cables. Source-published masses including detachable ends belong in component_dimensions.

Not available

2,900g(6.4 lb)3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Sound bar weight 6 lbs 6 oz (2.9 kg). Subwoofer weight 9 lbs 1 oz (4.1 kg).

Component dimensions and weightiPublished dimensions and mass for named supplied components, including a bar with detachable rears attached when stated. Each row describes one enclosure, not the pair, unless the component label explicitly states a set. Width, height and depth use normal installed orientation.

APolk Audio MagniFi Mini AX

Component	Width (mm)	Height (mm)	Depth (mm)
Included subwoofer	182	371	396

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 subwoofer W × D × H: 182 × 396 × 371 mm. One included enclosure.

BPolk Audio Signa S4

Component	Width (mm)	Height (mm)	Depth (mm)	Weight (g)
Subwoofer	200	280	328	4,100

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet gives subwoofer W x D x H as 200 x 328 x 280 mm. Weight comes from the manual.

Package dimensions

Not available

Width1,117.6Height263.7Depth441.5mm(44 × 10.4 × 17.4 in)7Retailer pagegreentoe.com/product/Polk_Audio_Signa_S4_3-1-2-Channel_Dolby_Atmos_Soundbar_System_300443-01-00-101Read 13 October 2026Retailer table lists box dimensions (LxWxH) as 44 x 17.38 x 10.38 in. Mapped to width, depth and height in that order. Inches converted exactly to mm and rounded to 0.1 mm.

Package weightiShipping package including supplied components and packaging.

Not available

9,584g(21.1 lb)7Retailer pagegreentoe.com/product/Polk_Audio_Signa_S4_3-1-2-Channel_Dolby_Atmos_Soundbar_System_300443-01-00-101Read 13 October 2026Retailer table lists package weight 21.13 lb. NFM lists 21.20 lb. Converted exactly and rounded to 1 g.

Wall mountable

No7Reviewecoustics.com/reviews/polk-audio-magnifi-mini-axRead 8 October 2026Set-Up step 1 explicitly no provisions for wall mounting. Cons repeats not designed for wall mounting.

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026Page copy describes a low-profile, wall-mountable design. Wall mount template and spacers are supplied. Screws are not listed.3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Section Hanging the sound bar on a wall describes two keyholes and the supplied template and spacers.

In the box

3 of 4 differ

In the box

Soundbar, Wireless subwoofer, Remote control, Soundbar power supply, Soundbar power cord, Subwoofer power cord, HDMI cable, Two AAA batteries, Quick start guide, Registration card, Safety document2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 full stock-package list. Optional SR2 rears excluded.

Sound bar, Subwoofer, Remote control, Sound bar power cord, Subwoofer power cord, HDMI cable, Optical cable, 2 AAA batteries, Quick start guide, Registration card, Safety card, Wall mount template, Wall mount spacers1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026Specifications tab What's in the Box. The infosheet lists one power cord. The page lists sound bar and subwoofer power cords.

Wall mount hardware includediSupplied bar mounting brackets or mount. Screws alone do not establish that a complete mount is included.

No2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 complete box inventory includes no mounting hardware.

Not available

HDMI cable included

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Page 2 box contents explicitly HDMI cable.

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

Optical cable included

No7Reviewecoustics.com/reviews/polk-audio-magnifi-mini-axRead 8 October 2026Set-Up step 2 explicitly optical cable not provided.

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

General

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Series

MagniFi1Maker product pagepolkaudio.com/en-us/product/sound-bars/magnifi-mini-ax/300410.htmlRead 8 October 2026Page navigation places this Mini AX in the MagniFi series.

Signa1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

300410-01-00-1011Maker product pagepolkaudio.com/en-us/product/sound-bars/magnifi-mini-ax/300410.htmlRead 8 October 2026Exact US product JSON-LD publishes MPN and SKU 300410-01-00-101.

300443-01-00-1011Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026US page SKU 300443-01-00-101.

GTIN / EAN

Not available

7471921358298Retailer pagecreativeaudio.net/signa-s4Read 13 October 2026UPC 747192135829 listed with part number 300443-01-00-101. Electronic Express lists the same UPC.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

15 March 20225Press releaseavnirvana.com/threads/meet-polks-all-new-magnifi-mini-ax-soundbar.10237Read 8 October 2026Reproduced Polk announcement dated March 15, 2022.

Not available

Status

Available1Maker product pagepolkaudio.com/en-us/product/sound-bars/magnifi-mini-ax/300410.htmlRead 8 October 2026Exact US listing is in stock and has an active Add to Cart control.

Available1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026US maker page offers the black model for purchase. The current page price is $449, which is not the launch price.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

$4995Press releaseavnirvana.com/threads/meet-polks-all-new-magnifi-mini-ax-soundbar.10237Read 8 October 2026Reproduced Polk Pricing and Availability explicitly $499 US launch price. US pre-tax MSRP, stock bar and subwoofer.

$3995Press articlehometheaterforum.com/polk-audio-introduces-signa-s4-dolby-atmos-sound-bar-systemRead 13 October 2026Launch article of 2021-12-20 gives the system price as $399 and says it is available now from Polk Audio. The Tom's Guide review also gives $399. US MSRP excluding sales tax is not stated.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

Not available

€3496Press articleareadvd.de/news/polk-audio-stellt-neues-dolby-atmos-soundbar-system-vorRead 13 October 2026German launch report of 2021-12-16: available now for 349 euros recommended retail price (UVP) from PolkAudio.com and dealers. VAT treatment is not stated and a German UVP normally includes VAT.

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US5Press releaseavnirvana.com/threads/meet-polks-all-new-magnifi-mini-ax-soundbar.10237Read 8 October 2026Pricing and Availability explicitly US. Other regions are unnamed and not stored.

US, EU1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026US page lists the US SKU and US pricing. The EU market comes from the German launch report.6Press articleareadvd.de/news/polk-audio-stellt-neues-dolby-atmos-soundbar-system-vorRead 13 October 2026

ColoursiThe maker's own colour names

Black8Maker product pagesfcc-prod-polk.soundunited.com/fr-fr/product/sound-bars/magnifi-mini-ax/MAGMINIAX-P.htmlRead 8 October 2026Exact Mini AX page colour selector names Black.

Black1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

Links

Not compared

Product page

www.polkaudio.com/en-us/product/sound-bars/magnifi-mini-ax/300410.html1Maker product pagepolkaudio.com/en-us/product/sound-bars/magnifi-mini-ax/300410.htmlRead 8 October 2026Exact Mini AX page, not the original Mini or Max AX.

www.polkaudio.com/en-us/product/sound-bars/signa-s4/300443.html1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

Spec sheet

www.polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdf2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw527a8c26/downloads/magnifi-mini-ax-infosheet-en.pdfRead 8 October 2026Exact Mini AX information sheet, page 2.

www.polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdf2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Manual

www.polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdf3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw7d76cf3d/downloads/magnifi-mini-ax-quickstartguide-global.pdfRead 8 October 2026Exact Mini AX global quick start guide. English printed pages 1 to 25.

www.polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdf3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

1 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year4Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw99d4e121/downloads/magnifi-mini-ax-safetydoc-na.pdfRead 8 October 2026PDF page 4 exact-model US and Canada 1-Year Limited Warranty. This document takes precedence over generic warranty page amplifier/speaker terms.

Not available

Both are also in the API. Back to all soundbars.