Different classes, so treat this as a step-up-or-not question rather than a head-to-head. The Marshall Stockwell II ranks #11 of 97 large speakers by sound quality at $229.99; the Marshall Bromley 450 ranks #24 of 44 party speakers by sound quality at $649.95.
The Marshall Stockwell II is the lighter choice. Possibly the most natural sounding Marshall speaker, with excellent off-axis sound. At 3.1 lbs (1.4 kg) it weighs much less than the Marshall Bromley 450 at 27.1 lbs (12.3 kg). Watch for: Not very loud, and the added DSP reverb may annoy purists.
The Marshall Bromley 450 is the longer-running pick. A balanced, warm sound with a flat midrange that keeps vocals and instruments clear, plenty of bass rumble and enough treble for energetic vocals, per RTINGS’ lab tests. It is rated for 40 hours of battery against 20 for the Marshall Stockwell II. It supports AAC Bluetooth, which the Marshall Stockwell II lacks. It links with other speakers (Auracast), which the Marshall Stockwell II cannot. The catch: It is the quietest of its rivals: both the Soundboks Mix and Teufel Rockster Air 2 play louder, and near max volume the bass recedes and the sound gets less composed.
Buy the Marshall Stockwell II at $229.99 if you want a large speaker. Buy the Marshall Bromley 450 at $649.95 if you want a party speaker instead.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Marshall Stockwell II | Marshall Bromley 450 | |
|---|---|---|
| Price | $229.99 | $649.95 |
| Ranked | #11 of 97 in Large Size Portable Bluetooth Speakers | #24 of 44 in Party Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes (3.5mm, RCA) |
| Bass Extension (-10dB) | 44Hz | - |
| Battery Life | 20 hours (Manufacturer specified) | 40+ hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LC3 |
| IP Rating | IPX4 | IP55 |
| Bluetooth Latency | 50ms | - |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | - |
| Party Mode | No | Yes (Auracast) |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | Yes | Yes |
| TWS | No | No |
| Weight | 3.1 lbs (1.4 kg) | 27.1 lbs (12.3 kg) |
| App | No | Yes (Marshall Bluetooth app) |
| Built-in Microphone | Yes | No |
| EQ | No | Yes |
| Power Bank | No | Yes (USB-C) |
| Bluetooth Version | 5.0 | 5.3 |
| Dimensions | 7.1” x 6.3” x 2.8” (180 x 161 x 70 mm) | 14.4” x 19.4” x 10.3” (366 x 492 x 261 mm) |
| Drivers | 3” woofer, 2x 2” fullrange tweeters | 2x 6.5” woofers, 4x 2” full-range drivers, 2 passive radiators |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | 42Hz - 20kHz (Manufacturer specified) |
| Amplifier Power | 20W | 400W |
| Digital Aux Input | No | Yes (USB-C) |
| Strap | Yes (built-in strap) | No |
| Charging Time | - | 3.5 hours |
| Removable Battery | - | Yes |
| Microphone Input | - | Yes (2x XLR/6.35mm combo) |
| XLR Input | - | Yes (2x combo) |
| Guitar Input | - | Yes |
| USB Playback | - | No |
| Wi-Fi | - | No |
| Lights | - | Yes |
| Wheels | - | No |
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- Marshall Stockwell II vs Minirig 4 with subwoofer
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
Marshall Stockwell II: $229.99 Amazon eBay
Newer model: the Marshall Stockwell III, ranked lower, rated 3/5.
Pros: Marshall Stockwell II uses 3” woofer, 2x 2” fullrange tweeters. Its 1.4 kg, claimed 20 hours (Manufacturer specified) battery life, IPX4 protection, aux input, up to 96dB and mono playback make it a practical option for its intended room or portable use. Possibly the most natural sounding Marshall speaker, with excellent off-axis sound. Measured bass extension of 44Hz (-10dB).
Cons: Bass is limited by its 44Hz specification. There is no companion app. No EQ adjustment. Not very loud, and the added DSP reverb may annoy purists.
Full Marshall Stockwell II review and specifications →
| Amplifier Power | 20W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 44Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 50ms |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.1” x 6.3” x 2.8” (180 x 161 x 70 mm) |
| Drivers | 3” woofer, 2x 2” fullrange tweeters |
| EQ | No |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX4 |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) |
| Omnidirectional | Yes |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (built-in strap) |
| TWS | No |
| Weight | 3.1 lbs (1.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Marshall Stockwell 2 vs Soundcore Motion Boom and Motion Plus! expensive is better? More from alanrossreviews →
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- Oluv Patreon: Marshall Stockwell III vs Stockwell II More from Oluv’Sone →
- Joy & Oluv’Sone: Marshall Stockwell III vs II - sound test
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Marshall Bromley 450: $649.95 Amazon B&H Photo Video eBay
Pros: A balanced, warm sound with a flat midrange that keeps vocals and instruments clear, plenty of bass rumble and enough treble for energetic vocals, per RTINGS’ lab tests. Drivers on all four sides keep the tonal balance nearly the same from any angle, and M1M Tech Channel found it more open and airy than the Soundboks Mix and Teufel Rockster Air 2, with deeper bass than both. RTINGS measured 18.8 hours of battery from a swappable LiFePO4 pack shared with the Bromley 750, and it adds IP55 protection, two XLR/6.35mm combo inputs, USB-C audio, Auracast and physical bass and treble knobs.
Cons: It is the quietest of its rivals: both the Soundboks Mix and Teufel Rockster Air 2 play louder, and near max volume the bass recedes and the sound gets less composed. The warm tuning lacks some fine treble detail. There is no graphic EQ, only bass and treble knobs, and its stereo spreads left and right channels around the cabinet, so panned elements can land on the wrong side. At 12.3 kg it has a carry handle but no wheels.
Full Marshall Bromley 450 review and specifications →
| Amplifier Power | 400W |
|---|---|
| App | Yes (Marshall Bluetooth app) |
| Aux Input | Yes (3.5mm, RCA) |
| Battery Life | 40+ hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LC3 |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Charging Time | 3.5 hours |
| Digital Aux Input | Yes (USB-C) |
| Dimensions | 14.4” x 19.4” x 10.3” (366 x 492 x 261 mm) |
| Drivers | 2x 6.5” woofers, 4x 2” full-range drivers, 2 passive radiators |
| EQ | Yes |
| Frequency Response | 42Hz - 20kHz (Manufacturer specified) |
| Guitar Input | Yes |
| IP Rating | IP55 |
| Lights | Yes |
| Microphone Input | Yes (2x XLR/6.35mm combo) |
| Omnidirectional | Yes |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Removable Battery | Yes |
| Stereo | Yes |
| Strap | No |
| TWS | No |
| USB Playback | No |
| Weight | 27.1 lbs (12.3 kg) |
| Wheels | No |
| Wi-Fi | No |
| XLR Input | Yes (2x combo) |
- Links
- Reviews, Comparisons and Sound Samples
- RTINGS: Marshall Bromley 450 Review More from Rtings.com →
- M1M Tech Channel: The best in its class? Marshall Bromley 450 vs. Soundboks & Teufel More from M1MTechChannel →
- HeadphoneCheck: Marshall Bromley 450 test
- Tom’s Guide: Marshall Bromley 450 vs Bromley 750 face-off
- Smart Home Sounds: Marshall Bromley 450 review More from Smart Home Sounds →
- Storytripper HD: JBL Partybox 120 vs Marshall Bromley 450 (Indoor) More from storytripperhd →
- Storytripper HD: Marshall Bromley 450 vs Marshall Bromley 750 (outdoor)
- Storytripper HD: Marshall Woburn III vs Marshall Bromley 450
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