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  3. BOOMBOX 4 vs Bromley 750

JBL BOOMBOX 4 vs Marshall Bromley 750

What BOOMBOX 4 does better (2) and where Bromley 750 wins (2) — every spec side by side.

JBL BOOMBOX 4
JBL · 2026BOOMBOX 4
2 advantages≈ $500
vs
Marshall Bromley 750
Marshall · 2025Bromley 750
7.4Score
2 advantages≈ $920
Higher score
9.6Build & features2.4
Dimensions

Size comparison

BOOMBOX 4Bromley 750
510 × 260210413 × 652355
BOOMBOX 4Bromley 750Difference
Height260 mm652 mm−392 mm
Width510 mm413 mm+97 mm
Depth210 mm355 mm−145 mm

Drawn to the same scale from the official dimensions (front and side).

Why is BOOMBOX 4 better than Bromley 750?

  1. Water resistance (IPx)IPx8 vs IPx42×
  2. Dust protection (IP)6 vs 5+20%

Why is Bromley 750 better than BOOMBOX 4?

  1. Battery life34 h vs 40 h+18%
  2. Lowest frequency37 Hz vs 20 Hz+85%
Specifications

Side by side

Sound
Driver type—Dynamic
Driver size—254 mm
Number of drivers—4
Output power—500 W
Lowest frequency37 Hz20 Hz
Highest frequency20,000 Hz20,000 Hz
Adjustable equaliser—Yes
Battery & charging
Battery life34 h40 h
Charging time—3.5 h
Fast charging support—Yes
Power bank function—Yes
Mains poweredYesNo
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—
Design & build
Weight—23,900 g
Width510 mm413 mm
Height260 mm652 mm
Depth210 mm355 mm
Protection ratingIP68IP54
Water resistance (IPx)IPx8IPx4
Dust protection (IP)65
Colours—Black
Features
Hands-free calls—Yes
Party / stereo pairingYesYes
Light effects—Yes
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