Short answer: the Marshall Kilburn II, if you are buying new. The Soundcore Select Pro ranks higher than it (#15 vs #43 of 102 large speakers, 4.4/5 vs 3.8/5) but is discontinued, so only consider it used; the Marshall Kilburn II is still sold new at $279.
The case for the Soundcore Select Pro: Sounds almost exactly like the Motion Boom. The catch: Boosted bass, rolled off treble.
Buy the Marshall Kilburn II, since the Soundcore Select Pro is discontinued and only worth hunting down used.
If water resistance matters to you, the Soundcore Select Pro at IPX7 (brief submersion) holds up far better than the Marshall Kilburn II at IPX2 (light drips).
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Marshall Kilburn II | Soundcore Select Pro | |
|---|---|---|
| Price | $279.00 | $80 Discontinued |
| Ranked | #43 of 102 in Large Size Portable Bluetooth Speakers | #15 of 102 in Large Size Portable Bluetooth Speakers |
| Aux Input | Yes | No |
| Bass Extension (-10dB) | ~58Hz | - |
| Battery Life | 20 hours (Manufacturer specified) | 16 hours (Manufacturer specified) |
| IP Rating | IPX2 | IPX7 |
| Weight | 5.5 lbs (2.49 kg) | 3.3 lbs (1.5 kg) |
| App | No | Yes (Users say it works) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| EQ | No | Yes |
| Party Mode | No | Yes (PartyCast up to 100 speakers) |
| Power Bank | No | Yes |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| Amplifier Power | 36W | 30W |
| Dimensions | 9.6” x 6.4” x 5.5” (243 x 162 x 140 mm) | 13.6” x 5.8” x 7.9” (346 x 148 x 200 mm) |
| Drivers | 1x 4” (102mm) woofer + 2x 20mm dome tweeters | 2x 2.75” fullrange + 2x 2.5” passive radiators |
| Maximum SPL | 102dB (Manufacturer specified) | 106dB (measured by Alan Ross Reviews) |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.0 | 5.0 |
| Strap | Yes (built-in strap) | - |
Related Speaker Comparisons
How Soundcore Select Pro compares with other leading options:
- JBL Xtreme 5 vs Soundcore Select Pro
- Tribit Stormbox Lava vs Soundcore Select Pro
- Soundcore Boom 2 vs Soundcore Select Pro
- Marshall Stockwell II vs Soundcore Select Pro
- Harman Kardon Citation 200 vs Soundcore Select Pro
Prices on this page were last checked October 4, 2026 at 9:58 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
Marshall Kilburn II: $279.00 Amazon eBay
Newer model: the Marshall Kilburn III, ranked higher, rated 3.8/5.
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
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- Mateusz Cholewa: New 2025😎 Marshall Kilburn 3 UNBOXING 📦Audio TEST vs Kilburn 2
- Mateusz Cholewa: Marshall Kilburn 3 DEEP BASS👌💪💖🆚 Marshall Kilburn 2 Outside
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Soundcore Select Pro: $80 Discontinued eBay
Pros: A tough 1.5kg speaker with IPX7 protection, app EQ, a claimed 16-hour battery life, USB-C charging, power-bank output and PartyCast for linking up to 100 compatible speakers. It reaches a useful 106dB maximum level and offers a lively, bass-forward sound for casual outdoor use.
Cons: Independent lab listening finds only fair music fidelity: bass is somewhat boomy and lacks deep extension, mids can sound nasal and congested, and treble becomes smeared or sizzly. It strains at high volume, lacks an aux input and is discontinued, so it is best chosen for features and durability rather than detail or neutral sound.
Full Soundcore Select Pro review and specifications →
| Amplifier Power | 30W |
|---|---|
| App | Yes (Users say it works) |
| Aux Input | No |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 13.6” x 5.8” x 7.9” (346 x 148 x 200 mm) |
| Drivers | 2x 2.75” fullrange + 2x 2.5” passive radiators |
| EQ | Yes |
| IP Rating | IPX7 |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (PartyCast up to 100 speakers) |
| Power Bank | Yes |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | No |
| Weight | 3.3 lbs (1.5 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: This is shocking! They broke the world pound for pound champ! 😢 More from alanrossreviews →
- Snow Queen’s Tech: ANKER SOUNDCORE SELECT PRO VS MOTION BOOM - DO THEY SOUND THE SAME? SOUND TEST ( PLEASE WEAR 🎧)
- Chowa: Soundcore Select Pro (Review)
- Jay’s Straight Up Reviews & More: On a Ledge 🪟 Zealot S67 🆚 Soundcore Select Pro - Bluetooth Speaker Comparison More from JaysStraightUpReviews →
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