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  3. PARTYBOX 520 vs Bromley 450

JBL PARTYBOX 520 vs Marshall Bromley 450

What PARTYBOX 520 does better (0) and where Bromley 450 wins (2) — every spec side by side.

JBL PARTYBOX 520
JBL · 2025PARTYBOX 520
0 advantages≈ $670
vs
Marshall Bromley 450
Marshall · 2026Bromley 450
7.4Score
2 advantages≈ $800
Higher score
3.1Build & features2.6

Why is PARTYBOX 520 better than Bromley 450?

PARTYBOX 520 has no measurable advantages in this pair.

Why is Bromley 450 better than PARTYBOX 520?

  1. Battery life15 h vs 40 h2.7×
  2. Water resistance (IPx)IPx4 vs IPx5+25%
Specifications

Side by side

Sound
Driver type—Dynamic
Driver size—165.1 mm
Number of drivers—4
Output power400 W400 W
Speaker channels—Stereo
Lowest frequency40 Hz40 Hz
Highest frequency20,000 Hz20,000 Hz
Adjustable equaliser—Yes
Stereo—Yes
Battery & charging
Battery life15 h40 h
Charging time—3.5 h
Fast charging support—Yes
Power bank function—Yes
Mains poweredYes—
Battery powered (portable)YesYes
Connectivity
WirelessYesYes
Bluetooth version5.45.3
Bluetooth codecs—LC3, AAC, SBC
Hi-res codec (LDAC / aptX HD / LHDC)—No
aptX—No
LDAC—No
Multipoint (two devices)—Yes
LE Audio—Yes
Auracast—Yes
USB-C—Yes
USB audioYes—
3.5 mm jack / AUXYesYes
Design & build
Weight—12,320 g
Width415 mm—
Height769 mm—
Depth369 mm—
Protection ratingIPX4IP55
Water resistance (IPx)IPx4IPx5
Dust protection (IP)—5
Features
Party / stereo pairingYes—
Light effectsYesYes
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