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  3. PARTYBOX 520 vs LSX II LT

JBL PARTYBOX 520 vs KEF LSX II LT

What PARTYBOX 520 does better (2) and where LSX II LT wins (0) — every spec side by side.

JBL PARTYBOX 520
JBL · 2025PARTYBOX 520
2 advantages≈ $670
vs
KEF LSX II LT
KEF · 2024LSX II LT
0 advantages≈ $810
Dimensions

Size comparison

PARTYBOX 520LSX II LT
415 × 769369155 × 240180
PARTYBOX 520LSX II LTDifference
Height769 mm240 mm+529 mm
Width415 mm155 mm+260 mm
Depth369 mm180 mm+189 mm

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

Why is PARTYBOX 520 better than LSX II LT?

  1. Output power400 W vs 200 W2×
  2. Bluetooth version5.4 vs 5+8%

Why is LSX II LT better than PARTYBOX 520?

LSX II LT has no measurable advantages in this pair.

Specifications

Side by side

Sound
Output power400 W200 W
Speaker channels—Stereo
Lowest frequency40 Hz—
Highest frequency20,000 Hz—
Hi-Res Audio—Yes
Stereo—Yes
Battery & charging
Battery life15 h—
Mains poweredYesYes
Battery powered (portable)Yes—
Connectivity
WirelessYesYes
Bluetooth version5.45
USB audioYesYes
3.5 mm jack / AUXYes—
Optical input—Yes
Smart & streaming
Wi-Fi—Yes
AirPlay—Yes
Chromecast / Google Cast—Yes
Spotify Connect—Yes
Design & build
Width415 mm155 mm
Height769 mm240 mm
Depth369 mm180 mm
Protection ratingIPX4—
Water resistance (IPx)IPx4—
Features
Party / stereo pairingYes—
Light effectsYes—
To compare: 0up to 4 models
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