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  3. PARTYBOX 330 vs Bromley 750

JBL PARTYBOX 330 vs Marshall Bromley 750

What PARTYBOX 330 does better (1) and where Bromley 750 wins (3) — every spec side by side.

JBL PARTYBOX 330
JBL · 2026PARTYBOX 330
1 advantage≈ $560
vs
Marshall Bromley 750
Marshall · 2025Bromley 750
7.2Score
3 advantages≈ $1,100
Higher score
3.0Build & features2.3
Dimensions

Size comparison

PARTYBOX 330Bromley 750
334 × 663375413 × 652355
PARTYBOX 330Bromley 750Difference
Height663 mm652 mm+11 mm
Width334 mm413 mm−79 mm
Depth375 mm355 mm+20 mm

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

Why is PARTYBOX 330 better than Bromley 750?

  1. Bluetooth version6 vs 5.3+13%

Why is Bromley 750 better than PARTYBOX 330?

  1. Battery life18 h vs 40 h2.2×
  2. Output power280 W vs 500 W+79%
  3. Lowest frequency40 Hz vs 20 Hz2×
Specifications

Side by side

Sound
Driver type—Dynamic
Driver size—254 mm
Number of drivers—4
Output power280 W500 W
Lowest frequency40 Hz20 Hz
Highest frequency20,000 Hz20,000 Hz
Adjustable equaliser—Yes
Battery & charging
Battery life18 h40 h
Charging time—3.5 h
Fast charging support—Yes
Power bank function—Yes
Mains poweredYesNo
Battery powered (portable)YesYes
Connectivity
WirelessYesYes
Bluetooth version65.3
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 / AUXYes—
Optical inputYes—
Design & build
Weight—23,900 g
Width334 mm413 mm
Height663 mm652 mm
Depth375 mm355 mm
Protection ratingIPX4IP54
Water resistance (IPx)IPx4IPx4
Dust protection (IP)—5
Colours—Black
Features
Hands-free calls—Yes
Party / stereo pairingYesYes
Light effectsYesYes
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