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JBL PartyBox Stage 520 — Brand New Edition

Black

$799.00
Professionally Refurbished
3-Months Warranty incl. Battery
30-Day Risk-Free Trial
Black

Comes with:

JBL PartyBox Stage 520
Power Cord
Original Box
Specifications
Frequently Asked Questions
$799.00

Certified Quality

Every item is verified by our experts for authenticity, functionality, and condition—guaranteeing a product you can trust.

Free Returns Up To 30 Days

Not completely satisfied? We offer a hassle-free 30-day return policy for any reason. We’ll even provide a prepaid shipping label at no extra cost to you.

3-Months Warranty

Shop with peace of mind. Every purchase is backed by our 3-month warranty. If a functional issue occurs, we handle the repair or replacement and provide free shipping both ways.

Battery Health Guarantee

Reliable power, guaranteed. Every device comes with at least 80% battery capacity, with certified upgrades to 90% or 100% available to ensure your device lasts throughout your day.

Specifications

Audio

  • Power Output: 480W RMS — Capable of handling outdoor events for 100+ people with ease.
  • Woofers: Dual 8" High-Excursion — Larger drivers than the Stage 320, delivering deeper, more powerful bass response.
  • AI Sound Boost 2.0: Yes — Predictive modeling pushes the woofers further than ever before for bass that rivals the AC-only PartyBox 710.
  • Karaoke EQ: Performance Knob — Dedicated top-panel control for instant Echo, Treble, and Bass adjustment for connected microphones.

Battery & Power

  • Battery System: Dual-Slot Swappable — Two swappable battery slots — run on one or two, swap mid-event to keep the music going indefinitely.
  • Battery Life: Up to 22 Hours — Extended playtime with Playtime Boost active for maximum runtime.
  • Fast Charge: 15 min = 3 hrs — Quick top-up for when you need extra playtime mid-event.

Connectivity

  • Bluetooth: 5.4 with Auracast™ — Sync with unlimited compatible JBL speakers for a massive synchronized sound network.

Durability & Portability

  • Water Resistance: IPX4 — Factory-sealed splash-proof protection for poolside and outdoor event use.
  • Frame: Carbon-Fiber Reinforced — Increased durability during transport with improved acoustic resonance.
  • Mobility: Telescopic Handle + Smooth-Glide Wheels — Oversized wheels for easy transport across grass, gravel, and pavement.
  • Dimensions: 32.6" H x 15.2" W x 15.4" D (828 x 385 x 391 mm) — Mid-to-large format cabinet designed for stage and outdoor event use.
  • Weight: 48.5 lbs (22.0 kg) — Manageable with the telescopic handle and smooth-glide wheel system.

Frequently Asked Questions

Is this JBL PartyBox Stage 520 brand new? ▼

Yes — brand new, factory-sealed, never used. This unit comes directly from the manufacturer in its original packaging with all original accessories included.

Does this JBL PartyBox Stage 520 come with a warranty? ▼

Yes — all brand new units from Leo Electronics come with a 3-month warranty covering defects in parts and workmanship.

What is your return policy? ▼

We offer a 30-day risk-free return. If you're not completely satisfied, return it within 30 days for a full refund — no questions asked.

Is the battery in good condition? ▼

Yes — 100% health straight from the factory. This unit is brand new and factory-sealed, so the battery packs have never been used or cycled.

480W. Dual Swappable Batteries. AI Sound Boost. Factory Sealed.

The JBL PartyBox Stage 520 Brand New Edition is the 2026 flagship for those who need extreme power with manageable portability. Factory sealed, never used — with 480W RMS, dual swappable battery slots for up to 22 hours of playtime, AI Sound Boost 2.0, and a 360° matrix light show that sets it apart from every other mid-sized PartyBox.

480W + AI Sound Boost 2.0 — Bass Beyond Its Size

The Stage 520 delivers 480W RMS through dual 8" high-excursion woofers — a significant step up from the Stage 320’s 240W and dual 6.5" drivers. AI Sound Boost 2.0 uses predictive modeling to push the woofers further than ever before, creating bass that rivals the AC-only PartyBox 710 — all from a battery-powered portable speaker.

Dual Swappable Battery Slots — Up to 22 Hours

The Stage 520 is the first PartyBox to feature two swappable battery slots. Run it on one battery for everyday use, or load both for up to 22 hours of continuous playtime with Playtime Boost active. Swap packs mid-event to keep the music going indefinitely — no power outlet required.

Power Output 480W RMS
Battery Life Up to 22 Hours
Battery System Dual-Slot Swappable
Connectivity Bluetooth 5.4 + Auracast™