JBL PartyBox 520 vs Marshall Bromley 450
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At a glance
Key specifications and important differences. Full details follow below.
| Feature |  JBL PartyBox 520 |  Marshall Bromley 450 |
|---|---|---|
| Price | KSh 96,000.00 | KSh 126,000.00 |
| Battery | JBL Battery 600, Li-ion 99.02 Wh | Rechargeable, replaceable LFP (LiFePO4) battery |
| Weight | 25.5 kg | 12.32 kg |
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Full specifications
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General
| Specification | JBL PartyBox 520 | Marshall Bromley 450 |
|---|---|---|
| Brand | JBL | Marshall |
| Model | PartyBox 520 | Bromley 450 |
| Type | Portable Party Speaker | Portable Party Speaker |
| Color | — | Black and Brass |
Design
| Specification | JBL PartyBox 520 | Marshall Bromley 450 |
|---|---|---|
| Dimensions | 415 x 769 x 369 mm | 366 x 492 x 261 mm (W x H x D) |
| Weight | 25.5 kg | 12.32 kg |
Battery & Charging
| Specification | JBL PartyBox 520 | Marshall Bromley 450 |
|---|---|---|
| Battery | JBL Battery 600, Li-ion 99.02 Wh | Rechargeable, replaceable LFP (LiFePO4) battery |
Connectivity
| Specification | JBL PartyBox 520 | Marshall Bromley 450 |
|---|---|---|
| Bluetooth | 5.4 | Bluetooth 5.3; Auracast |
| Bluetooth Profiles / Codecs | A2DP V1.3, AVRCP V1.6 | SBC; AAC MPEG-2; LC3 |
| Wi-Fi | N/A — Bluetooth-only portable speaker | N/A — Bluetooth-only portable speaker |
| Wired Inputs | AUX, USB | 3.5 mm AUX input/output; USB-C; RCA |
| HDMI | N/A — portable speaker design | N/A — portable speaker design |
| USB | Bluetooth, AUX, USB, Mic/Guitar (1/4") | USB-C charge out, 5 V/3.0 A |
| Bluetooth Range | — | >70 m (229 ft) in free field |
| Microphone / Guitar Inputs | — | 2 x XLR/6.3 mm combo jacks |
| App Support | — | Marshall Bluetooth app |
Features
| Specification | JBL PartyBox 520 | Marshall Bromley 450 |
|---|---|---|
| Voice Assistant | N/A — no built-in voice assistant | N/A — no built-in voice assistant |
| Lightshow | Yes — integrated party lightshow | Yes — integrated party lightshow |
| Home Cinema Features | N/A — not a home-cinema speaker | N/A — not a home-cinema speaker |
| Special Features | AI Sound Boost, Auracast pairing, LED light show, JBL PartyBox app | Replaceable LFP battery; Auracast; IP55; integrated stage-inspired lightshow; Marshall Bluetooth app |
| Party Features | — | Integrated stage-inspired lightshow; 2 x XLR/6.3 mm mic/instrument inputs; handle and four strap anchors |
Audio
| Specification | JBL PartyBox 520 | Marshall Bromley 450 |
|---|---|---|
| Drivers | 1 x 12-inch subwoofer, 2 x 2.75-inch midrange, 2 x 2.75-inch tweeters | 2 x 6.5-inch 40 W woofers; 4 x 2-inch 6 W full-range drivers; 2 passive radiators |
| Frequency Response | 30Hz - 20kHz | 40 Hz-20 kHz |
| Total Power Output | 400W RMS | — |
| Signal-to-Noise Ratio | >80 dB | — |
| Speaker Configuration | — | Sealed with passive radiators; True Stereophonic 360° sound |
| Maximum SPL | — | 100 dB @ 1 m |
| Amplifier | — | 2 x 90 W Class D woofer amplifiers; 4 x 55 W Class D full-range amplifiers |
| Audio Channels | — | Stereo |
| Sound Modes / EQ | — | Equaliser; adjustable bass and treble |
| Audio Features | — | Marshall Signature Sound; True Stereophonic 360° sound; sealed cabinet with passive radiators; integrated stage-inspired lightshow |
Power & Battery
| Specification | JBL PartyBox 520 | Marshall Bromley 450 |
|---|---|---|
| Power Source | Rechargeable battery / USB charging | Rechargeable battery / USB charging |
| Battery Life | Up to 15 hours | 40+ hours |
| Charging Time | Approximately 4 hours via AC | 3.5 hours to full recharge |
| Fast Charging | — | 20 minutes gives 6 hours of playtime |
| Charging Port | — | AC mains input (120 W); USB-C charge-out |
Design & Controls
| Specification | JBL PartyBox 520 | Marshall Bromley 450 |
|---|---|---|
| Water & Dust Resistance | IPX4 splashproof | IP55 |
| Materials | Recycled plastic and fabric | — |
| Placement / Mounting | Free-standing portable placement | Free-standing portable placement |
| Controls | — | Power switch; source selector; media control; volume; bass; treble; M-button; input 1 volume; input 2 volume; input 1/2 effects; light mode; battery indicator |
What's in the Box
| Specification | JBL PartyBox 520 | Marshall Bromley 450 |
|---|---|---|
| Speaker / Soundbar | PartyBox 520 | Bromley 450 |
| Subwoofer | N/A — no subwoofer supplied | N/A — no subwoofer supplied |
| Remote Control | N/A — no remote control supplied | N/A — no remote control supplied |
| Power Cable | USB charging cable | Mains lead |
| Audio / HDMI Cable | N/A | N/A |
| Mounting Accessories | N/A — portable design | N/A — portable design |
| Other Accessories | N/A | N/A |
| Documentation | Quick Start Guide and safety documentation | Quick Start Guide and safety documentation |
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