Short answer: the Marshall Bromley 450, if you are buying new. The JBL Partybox 100 ranks higher than it (#8 vs #24 of 44 party speakers, 4.4/5 vs 3.7/5) but is discontinued, so only consider it used; the Marshall Bromley 450 is still sold new at $649.95.
The JBL Partybox 100 is the better-sounding, lighter choice. Quite neutral sound, pretty deep bass. At 21.4 lbs (9.7 kg) it weighs noticeably less than the Marshall Bromley 450 at 27.1 lbs (12.3 kg). The catch: A slight peak in the upper mids.
The Marshall Bromley 450 is the longer-running, tougher choice. 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 12 for the JBL Partybox 100. It is rated IP55, while the JBL Partybox 100 has no water resistance. It supports AAC Bluetooth, which the JBL Partybox 100 lacks. The tradeoff: 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 Bromley 450 new; the JBL Partybox 100 is no longer sold new, so it only makes sense as a used find.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| JBL Partybox 100 | Marshall Bromley 450 | |
|---|---|---|
| Price | $499.99 Discontinued | $649.95 |
| Ranked | #8 of 44 in Party Size Portable Bluetooth Speakers | #24 of 44 in Party Size Portable Bluetooth Speakers |
| App | No | Yes (Marshall Bluetooth app) |
| Aux Input | Yes | Yes (3.5mm, RCA) |
| Bass Extension (-10dB) | 41Hz | - |
| Battery Life | 12 hours (Manufacturer specified) | 40+ hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC, LC3 |
| Bluetooth Version | 4.2 | 5.3 |
| Charging Time | 6.5 hours | 3.5 hours |
| Dimensions | 11.3” x 21.7” x 11.4” (288 x 551 x 290 mm) | 14.4” x 19.4” x 10.3” (366 x 492 x 261 mm) |
| EQ | No | Yes |
| Frequency Response | 45Hz - 18kHz (Manufacturer specified) | 42Hz - 20kHz (Manufacturer specified) |
| Guitar Input | Yes | Yes |
| IP Rating | None | IP55 |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes (2x XLR/6.35mm combo) |
| Party Mode | No | Yes (Auracast) |
| Power Bank | Yes (USB-A, 5V/2.1A) | Yes (USB-C) |
| Power Input | AC Power cord | USB-C |
| Stereo | Partially | Yes |
| Omnidirectional | No | Yes |
| TWS | Yes | No |
| USB Playback | Yes | No |
| Weight | 21.4 lbs (9.7 kg) | 27.1 lbs (12.3 kg) |
| Amplifier Power | 160W | 400W |
| Drivers | 2x 5.25” (133mm) woofers + 2x 2.25” (57mm) tweeters | 2x 6.5” woofers, 4x 2” full-range drivers, 2 passive radiators |
| Digital Aux Input | No | Yes (USB-C) |
| Lights | Yes | Yes |
| Strap | No | No |
| Removable Battery | - | Yes |
| XLR Input | - | Yes (2x combo) |
| Built-in Microphone | - | No |
| Wi-Fi | - | No |
| Wheels | - | No |
Related Speaker Comparisons
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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
JBL Partybox 100: $499.99 Discontinued Amazon eBay
Newer model: the JBL Partybox Club 120, ranked higher, rated 4.5/5.
Pros: Quite neutral sound, pretty deep bass. Measured bass extension of 41Hz (-10dB).
Cons: A slight peak in the upper mids. Slight TWS issue where the 2nd is slightly delayed. Just as loud and slightly deeper bass than a Stormbox Blast which is way smaller with better sound quality. Discontinued.
Full JBL Partybox 100 review and specifications →
| Amplifier Power | 160W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 41Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Charging Time | 6.5 hours |
| Digital Aux Input | No |
| Dimensions | 11.3” x 21.7” x 11.4” (288 x 551 x 290 mm) |
| Drivers | 2x 5.25” (133mm) woofers + 2x 2.25” (57mm) tweeters |
| EQ | No |
| Frequency Response | 45Hz - 18kHz (Manufacturer specified) |
| Guitar Input | Yes |
| IP Rating | None |
| Lights | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | AC Power cord |
| Stereo | Partially |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 21.4 lbs (9.7 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- KULAS TECH SHOW: JBL Partybox 310, 100, on the Go Sound comparison More from KULASTECHSHOW20 →
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- DLX Willington: 🤣JBL Partybox 100 vs Sony GTK XB60 Sound Battle You Asked For It
- Oluv Patreon: Earfun UBoom X vs JBL Partybox 100 More from Oluv’Sone →
- Vua2hand: Solo Braven XXL/2 vs JBL Partybox 100 Sound test l Braven hay Jbl ?!!
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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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