Short answer: the Sonos Move, since the Kilburn II’s flaws are the audible kind. The Marshall Kilburn II pairs a 20W Class D amp with dual 8W tweeters but has boosted upper bass, an upper-mids peak and isn’t very detailed or as deep as competitors. The Sonos Move is warm with somewhat rolled-off treble, though it is not stereo.
Buy the Marshall Kilburn II if you want one new; the Sonos Move is discontinued, so only look for it used.
There is a real gap in water resistance: the Sonos Move at IP56 (powerful water jets) against the Marshall Kilburn II, which has IPX2 (light drips).
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Sonos Move | Marshall Kilburn II | |
|---|---|---|
| Price | $292.22 Discontinued | $279.00 |
| Ranked | #30 of 93 in Large Size Portable Bluetooth Speakers | #39 of 93 in Large Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 49Hz | ~58Hz |
| Battery Life | 11 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| IP Rating | IP56 | IPX2 |
| Power Bank | No | No |
| Power Input | USB-C (requires USB-C PD 12v minimum) | USB-C |
| Weight | 6.6 lbs (3 kg) | 5.5 lbs (2.49 kg) |
| Wi-Fi | Yes | - |
| App | No | No |
| Aux Input | Yes | Yes |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| Voice Assistants | Amazon Alexa or Google Assistant (choose one) plus Sonos Voice Control | - |
| EQ | No | No |
| Party Mode | No | No |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Bluetooth Version | 4.2 | 5.0 |
| Dimensions | 9.4” x 6.3” x 5” (240 x 160 x 126 mm) | 9.6” x 6.4” x 5.5” (243 x 162 x 140 mm) |
| Drivers | 1x 3.5” (89mm) mid-woofer + 1x downward-firing tweeter (tweeter size undisclosed by Sonos) | 1x 4” (102mm) woofer + 2x 20mm dome tweeters |
| Maximum SPL | 92dB (Manufacturer specified) | 102dB (Manufacturer specified) |
| Digital Aux Input | No | No |
| Strap | No | Yes (built-in strap) |
| Amplifier Power | - | 36W |
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Prices on this page were last checked October 2, 2026 at 10:18 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
Sonos Move: $292.22 Discontinued Amazon eBay
Newer model: the Sonos Move 2, ranked higher, rated 4.1/5.
Pros: A well-integrated Sonos portable that combines Wi-Fi multiroom playback, Bluetooth, automatic Trueplay room tuning and a charging base in a sturdy carryable enclosure. Reviews praise its broad, full-bodied sound, warm tonal balance and weightier bass than smaller Sonos speakers, particularly at normal indoor listening levels. Measured bass extension of 49Hz (-10dB).
Cons: It is mono, heavy and less portable than a conventional Bluetooth speaker, while bass pumping and compression become audible at high volume. Deep bass and maximum output trail the strongest speakers in its size class, and the rolled-off treble sacrifices some air and detail. It is discontinued in favor of Move 2, so buy used with battery condition in mind.
Full Sonos Move review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 49Hz |
| Battery Life | 11 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9.4” x 6.3” x 5” (240 x 160 x 126 mm) |
| Drivers | 1x 3.5” (89mm) mid-woofer + 1x downward-firing tweeter (tweeter size undisclosed by Sonos) |
| EQ | No |
| IP Rating | IP56 |
| Maximum SPL | 92dB (Manufacturer specified) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C (requires USB-C PD 12v minimum) |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| Voice Assistants | Amazon Alexa or Google Assistant (choose one) plus Sonos Voice Control |
| Weight | 6.6 lbs (3 kg) |
| Wi-Fi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Ezekielo: JBL Xtreme 2 vs Sonos Move with Sound Comparison
- NeverEnoughTech: soundcore Motion X600 vs. Sonos Move vs. Bose Soundlink Revolve II
- Smart Home Sounds: Best Premium Bluetooth Speakers: Sonos Move, JBL Xtreme 3, Marshall Middleton & More… More from Smart Home Sounds →
- Smart Home Sounds: Sonos Move 1 Vs Move 2: What’s The Difference?
- Head-to-Head Comparisons
Marshall Kilburn II: $279.00 Amazon eBay
Pros: 20W Class D amp + dual 8W tweeters. 20+ hour battery with quick-charge (20 min charges 3 hours of play). Rugged design with leather handle and reinforced corners, IPX2 rated. Thrives with rock music. Bluetooth 5.0 with 30ft range. Measured bass extension of ~58Hz (-10dB).
Cons: Boosted upper bass, not very detailed, not as deep bass as competitors, upper mids peak. Very low IPX2 water rating. AC charging
Full Marshall Kilburn II review and specifications →
| Amplifier Power | 36W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~58Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 9.6” x 6.4” x 5.5” (243 x 162 x 140 mm) |
| Drivers | 1x 4” (102mm) woofer + 2x 20mm dome tweeters |
| EQ | No |
| IP Rating | IPX2 |
| Maximum SPL | 102dB (Manufacturer specified) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (built-in strap) |
| TWS | Yes |
| Weight | 5.5 lbs (2.49 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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