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Polk MagniFi Max AX SR, product photo

Polk Audio · 2022

Polk MagniFi Max AX SR

Polk's complete 7.1.2 Atmos and DTS:X system with wireless rears, a 10-inch sub and three HDMI inputs, though passthrough stops at 4K 60Hz.

Where to buy

List $899

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The verdict

On paper it is one of the most complete systems at its level, with real rear speakers, a large subwoofer, three HDMI inputs and both Atmos and DTS:X. Evidence about its sound comes from a smaller outlet and owners rather than major reviewers, so it best suits buyers who value the full package and plenty of inputs; gamers who need 4K 120Hz passthrough should look elsewhere.

The MagniFi Max AX SR is Polk's flagship soundbar system: an 11-driver Dolby Atmos and DTS:X bar using Polk's SDA stereo-widening design, a 10-inch wireless subwoofer and two wireless surround speakers, for a 7.1.2 layout. It has three 4K HDMI inputs plus eARC and optical, streams over Wi-Fi with AirPlay 2, Chromecast and Spotify Connect, and includes VoiceAdjust dialogue control. Polk launched it in 2022 as its flagship system. No full review from a major outlet was read for this entry; HiFi Report's hands-on test and owner comments praise its bass and simple wireless setup.

Strengths

  • A complete 7.1.2 package in one box: an 11-driver bar, a 10-inch wireless subwoofer and two wireless surround speakers.
  • Three 4K HDMI inputs with HDR and Dolby Vision passthrough plus eARC and optical, more inputs than most soundbars.
  • Handles Dolby Atmos and DTS:X, and Polk says the eARC link carries Dolby TrueHD and DTS-HD Master Audio.
  • Wi-Fi streaming with AirPlay 2, Chromecast and Spotify Connect, plus Bluetooth and Works with Alexa.
  • VoiceAdjust raises dialogue on its own, Night Mode tames bass, and HiFi Report found the subwoofer's bass full and well blended.

Weak spots

  • HDMI passthrough is limited to 4K at 60Hz, so it cannot pass 4K 120Hz gaming signals.
  • Polk lists no automatic room calibration and no Ethernet port.
  • The wireless surrounds and subwoofer still need their own power outlets.
  • No full review from a major outlet was read for this entry.

Great for

  • Buyers who want real rear speakers and a subwoofer in one box
  • Setups with several 4K HDMI sources
  • Roku TV owners, since it plugs into Roku TV sound settings

Skip if

  • Gamers who need 4K 120Hz passthrough
  • Rooms without power outlets near the seating for the rear speakers

Full specifications

From the manufacturer unless noted. Shown for this model.

Sound

ChannelsWritten as bar.sub.height, or total channels. 5.1.2 means five main channels, a subwoofer and two overhead “height” channels.
7.1.2
Subwoofer included
Yes
Rear speakers included
Yes
Dialogue enhancementA setting that lifts voices above music and effects, useful if dialogue is hard to follow.
VoiceAdjust adjustable dialogue level, plus Night Mode

Audio formats

Dolby Atmos
Yes
DTS:X
Yes
DTS decoding
Yes
Dolby TrueHD
Yes

Connections

eARC
Yes
HDMI inputsExtra HDMI inputs let you plug a console or player into the soundbar. Most people plug devices into the TV and use eARC instead.
3
HDMI outputs
1
Optical input
Yes
HDMI video passthrough
Three HDMI inputs pass 4K at 60Hz with HDR and Dolby Vision

Wireless

Wi-Fi
Yes
Bluetooth
Bluetooth (version not listed)
Apple AirPlay
Yes
Google Cast
Yes
Spotify Connect
Yes

Size & placement

Bar width
1,143 mm
Bar weight
5.83 kg
Wall mountable
Yes

Warranty

Warranty
1 years

Primary source: polkaudio.com

Setup notes

  • Connects to the TV through HDMI eARC; three HDMI inputs pass 4K 60Hz video with HDR and Dolby Vision.
  • Polk says the eARC connection carries Dolby TrueHD, DTS-HD Master Audio and Dolby Atmos, and the bar supports DTS:X.
  • Has an optical input and a USB port used only for firmware updates; there is no Ethernet port.
  • The subwoofer and each wireless surround need mains power; Polk includes power adapters for the surrounds.
  • Integrates with a Roku TV's sound settings and can be controlled with a Roku remote, per Polk.
  • Polk's pages disagree on whether the bar is 2.8 or 4.6 inches tall, so check the clearance under the TV before buying.

Video reviews

Each video was checked to exist and to be about the Polk MagniFi Max AX SR.

Polk MagniFi Max AX SR vs. Vizio Elevate M-Series

NeverEnoughTech

Compares the MagniFi Max AX SR system with Vizio's Elevate M-Series soundbar.

Polk MagniFi Max AX SR Review: Is It Worth It?

Golf Sky

A review that asks whether the MagniFi Max AX SR system is worth buying.

What reviewers found

Summaries in our own words. Follow the link to read each review in full.

  • HiFiReport

    Date unknown

    Positive

    In a hands-on test of the full system, the reviewer found the 10-inch subwoofer gave ample, punchy bass with clearly improved layering that blended naturally with the surrounds, judged the default settings fine for small and mid-size rooms, and rated music playback as natural and spacious.

    Read the original

What owners are saying

From Reddit and forums, paraphrased with a link to the original discussion. Community reports are anecdotal.

  • r/Soundbars

    u/Due_Profession3023

    Oct 15, 2026

    Neutral

    This owner lived with the AX SR system for about three years while saving up, then moved on to a full Polk Reserve 5.1.2 speaker setup, treating the soundbar as a long-term stepping stone.

    Read the original
  • r/Soundbars

    u/GondarHero

    Nov 8, 2026

    Positive

    Rates the system as outstanding and among the best soundbars around, stressing that the sub and rears are wireless, so setup only takes four power outlets and works straight out of the box.

    Read the original

Questions

What is the difference between the MagniFi Max AX and the Max AX SR?

Both use the same 11-driver bar and 10-inch wireless subwoofer. The AX SR adds two wireless surround speakers for a 7.1.2 system, while the plain Max AX is sold by Polk as a 5.1.2 bar-and-subwoofer set.

Does the MagniFi Max AX SR support 4K 120Hz passthrough?

No. Polk lists its three HDMI inputs and its eARC output at 4K 60Hz. Connect a 120Hz console directly to the TV and let the TV send sound to the bar over eARC.

Does it support DTS:X?

Yes. Polk lists both Dolby Atmos and DTS:X, and says the eARC connection carries Dolby TrueHD and DTS-HD Master Audio as well.

Are the rear speakers battery powered?

No. Each wireless surround plugs into a wall outlet with its own power adapter, which Polk includes in the box; only the audio link to the bar is wireless.

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Sources for this page

Last reviewed Nov 10, 2026. Released October 2022. Spotted an error? Tell us.

Where to buyfrom $719