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JBL PartyBox Stage 520 — Certified Refurbished Edition

Black

$750.00
•Refurbished • Risk Free • Warranty
Black

Comes with:

JBL PartyBox Stage 520
Power Cord
Generic Box
Specifications
Frequently Asked Questions
$750.00

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: 400W RMS — Fills larger outdoor areas and small halls with high-impact audio and deep bass response.
  • Woofers: Dual 7" High-Sensitivity Woofers — Engineered for deeper bass response than smaller PartyBox models, verified during refurbishment.
  • AI Sound Boost: Yes — Real-time driver monitoring that maximizes volume and bass without distortion or hardware damage.
  • Karaoke Mixer: Mic + Guitar Inputs — Dedicated Echo, Treble, and Bass controls for live vocal and instrument performance.

Battery & Power

  • Battery System: Dual-Slot Replaceable — Two slots for JBL Battery 400 packs, both independently tested for charging speed and discharge stability.
  • Battery Life: Up to 20 Hours — High-capacity modular battery support for extended outdoor events.
  • Fast Charge: 15 min = 3 hrs — Quick top-up for when you need extra playtime mid-event without a long wait.

Connectivity

  • Bluetooth: 5.4 with Auracast™ — Sync with unlimited compatible JBL speakers simultaneously for an expansive sound network.

Durability & Portability

  • Water Resistance: IPX4 — Certified for poolside splashes and light rain during outdoor events.
  • Mobility: Telescopic Handle + All-Terrain Wheels — Stress-tested to handle the 48 lb cabinet across pavement, grass, and sand.
  • Dimensions: 28.1" H x 13.9" W x 14.8" D (71.3 x 35.4 x 37.6 cm) — Mid-format cabinet designed for stage and outdoor event use.
  • Weight: 48.5 lbs (22.0 kg) — Manageable with the telescopic handle and all-terrain wheel system.

Frequently Asked Questions

What does Certified Refurbished mean? ▼

Certified Refurbished means this JBL PartyBox Stage 520 has been professionally inspected, tested, and restored to full working condition. Both battery slots are tested for charging speed and discharge stability, the AI Sound Boost calibration is verified, and the telescopic handle and all-terrain wheels are stress-tested before the unit ships to you.

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

Yes — all Certified Refurbished 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 — both battery slots have been checked for health and meet our minimum standards. The modular JBL Battery 400 packs are tested for charging speed and discharge stability to ensure reliable playtime.

400W. Dual Swappable Batteries. AI Sound Boost. Certified Refurbished.

The JBL PartyBox Stage 520 Certified Refurbished is the sweet spot between portable and powerful — 400W RMS, dual-slot replaceable batteries for up to 20 hours of playtime, and AI Sound Boost in a wheeled cabinet you can take anywhere. Every unit is professionally inspected and verified for audio performance, battery health, and mobility before it ships to you.

What Is Certified Refurbished?

Certified Refurbished means this JBL PartyBox Stage 520 has been professionally inspected, tested, and restored to full working condition. Both battery slots are tested for charging speed and discharge stability. The AI Sound Boost calibration is verified, and the telescopic handle and all-terrain wheels are stress-tested to ensure smooth operation before the unit ships to you.

Dual-Slot Battery System — Up to 20 Hours

The Stage 520 features two slots for JBL Battery 400 packs, giving you up to 20 hours of continuous playtime. Both slots are independently tested during refurbishment for charging speed and discharge stability. Since the batteries are modular, you can always add a brand-new second pack later to extend your runtime even further. Fast Charge support means 15 minutes of charging gives you 3 hours of playback.

Power Output 400W RMS
Battery Life Up to 20 Hours
Battery System Dual-Slot Replaceable
Connectivity Bluetooth 5.4 + Auracast™