Polk Audio MagniFi Max AX SR
Score: 83/100
Sonos Arc Ultra Black
Score: 82/100Rankings
The Polk MagniFi Max AX SR provides a flagship 7.1.2-channel wireless system with rear surrounds, supporting Dolby Atmos, DTS:X, and extensive streaming options. Its premium price and limited warranty may be drawbacks for some buyers. Designed for enthusiasts seeking a full-home-theater experience without extensive wiring.
The Sonos Arc Ultra provides premium 9.1.4 Dolby Atmos sound with 14 drivers, Bluetooth 5.3, and integrated voice assistants. Its premium price and lack of detailed EQ may deter budget-focused buyers. Perfect for Sonos users wanting high-end performance in a single bar.
| Attribute | | |
|---|---|---|
| ↓ lower better | 5.83 kg | 5.76 kgbest |
1 yearsbest | 1 yearsbest | |
114.3 cm | 117.4 cmbest | |
11.8 cmbest | 7.95 cm | |
7.2 cm | 11.05 cmbest |
Click an attribute name to sort · Green = best, red = worst (relative to this comparison)
| Attribute | | |
|---|---|---|
Audio(3) | ||
Audio Channels | 7.1.2 | 9.1.4 |
Supported Audio Formats | PCM, Dolby Mono, Dolby Digital, Dolby Digital Plus, Dolby Atmos, Dolby Atmos True HD, DTS Digital Surround, DTS-HD, DTS-HD Master Audio, DTS:X, DTS Virtual:X | Dolby Atmos, Dolby Digital, DTS compatible |
Wireless Subwoofer | true | false |
Design(4) | ||
Soundbar Weight (kg) | 5.83 kg | 5.76 kg |
Soundbar Width (cm) | 114.3 cm | 117.4 cm |
Soundbar Height (cm) | 11.8 cm | 7.95 cm |
Soundbar Depth (cm) | 7.2 cm | 11.05 cm |
Products in the top-left offer the best value (high score, low price).
Professional reviewers praise the Arc Ultra as a clear step up from the original Arc, highlighting its richer driver array, Sound Motion bass technology and the ability to deliver high volume without noticeable compression. The soundbar's support for Dolby Atmos and a wide range of wireless protocols, combined with TruePlay room correction, earns it high marks for versatility. However, critics note the lack of any graphic EQ or granular tone controls and the limited low-frequency output of the built-in subwoofer as notable drawbacks.
