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JBL PartyBox 520

JBLParty wireless speaker

PartyBox 520

Released June 2025.4Press releasenews.harman.com/releases/jbl-solidifies-its-spot-as-theRead 15 October 2026Release says the new PartyBox speakers will be available starting June 2025. SoundGuys reviewed the speaker on 4 July 2025 and gives 25 May 2025 as the release date, within a month of June. Last checked 21 October 2026.

Rated audio power
400W
Playback time (claimed)
15h
Dust and water rating
IPX4
Weight
25,500g

60 of 96 fields known.

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At a glance

Ports

  • AC power
  • USB-C
  • 3 3.5 mm audio
  • 2 6.35 mm audio

All specs

SourceCalculated

General

Series
PartyBox1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026The sheet title is PARTYBOX 520, a model in JBL's PartyBox range.
Model numbers
JBLPARTYBOX520AM5Retailer pageabt.com/JBL-PartyBox-520-Portable-Speaker-Bluetooth-in-Black-JBLPARTYBOX520AM/p/218822.htmlRead 15 October 2026US model JBLPARTYBOX520AM. The European model is JBLPARTYBOX520EU and it has no USB drive playback, so it is not merged into this row.
GTIN / EAN
0500364086155Retailer pageabt.com/JBL-PartyBox-520-Portable-Speaker-Bluetooth-in-Black-JBLPARTYBOX520AM/p/218822.htmlRead 15 October 2026UPC 050036408615 for the Black JBLPARTYBOX520AM.
Announced
6 January 20254Press releasenews.harman.com/releases/jbl-solidifies-its-spot-as-theRead 15 October 2026CES 2025 release dated 6 January 2025.
Status
Available5Retailer pageabt.com/JBL-PartyBox-520-Portable-Speaker-Bluetooth-in-Black-JBLPARTYBOX520AM/p/218822.htmlRead 15 October 2026Listed for sale at $879.95 on 2026-10-15.
Predecessor
Not available
Successor
Not available
Launch price (US)
$879.954Press releasenews.harman.com/releases/jbl-solidifies-its-spot-as-theRead 15 October 2026The release table lists $879.95 for the PartyBox 520, while its text says retailing from $299 to $799. SoundGuys quoted $799 in January and an MSRP of $879.95 in its July 2025 review. $879.95 is stored.
Launch price (EU)
Not available
Markets
US5Retailer pageabt.com/JBL-PartyBox-520-Portable-Speaker-Bluetooth-in-Black-JBLPARTYBOX520AM/p/218822.htmlRead 15 October 2026US retailer listing of the AM model.
Colours
Black5Retailer pageabt.com/JBL-PartyBox-520-Portable-Speaker-Bluetooth-in-Black-JBLPARTYBOX520AM/p/218822.htmlRead 15 October 2026
Speaker type
Party3Maker product pagejbl.com.ph/loudspeakers/PARTYBOX-520.htmlRead 15 October 2026The maker calls it a portable battery-powered party speaker.

Audio

Audio channels
Not available
Audio drivers
Driver typeCountDiameter (mm)
Woofer2208
Dome tweeter225
Source1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Technical Specifications say Transducer 2 x 7.5 inch (208 mm) woofers, 2 x 1 inch (25 mm) dome tweeters. No per-driver power is published.
Passive radiators
Not available
Rated audio power
400W1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Technical Specifications say Output power 400 W RMS (IEC60268). No separate battery and mains rating is published. The launch release table says 400 max watts, which does not state a basis.
Rated audio power on mains
Not available
Audio output power (unspecified rating)
Not available
Peak audio power
Not available
Frequency response lower limit (claimed)
40Hz1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Technical Specifications say Frequency response 40 Hz - 20 kHz. No tolerance is stated.
Frequency response upper limit (claimed)
20kHz1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Technical Specifications say 40 Hz - 20 kHz.
Signal-to-noise ratio (claimed)
80dB1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Published as > 80 dB. Stored as 80.
Adjustable equalizer
Yes6Reviewsoundguys.com/jbl-partybox-520-review-the-sweet-spot-in-jbls-partybox-lineup-140579Read 15 October 2026App section says a 7-band adjustable EQ.
Equalizer bands
76Reviewsoundguys.com/jbl-partybox-520-review-the-sweet-spot-in-jbls-partybox-lineup-140579Read 15 October 2026Review says 7-band EQ in the PartyBox app. Review unit ran firmware 25.17.10 and app v3.11.5.
Automatic sound adjustment
Yes1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026AI Sound Boost analyzes the music in real time to deliver maximum acoustic performance with less distortion. It adapts to the audio content, not to the room.
Sound modes
Bass Boost level 1, Bass Boost level 2, JBL Signature Sound, Movie2Owner's manualjbl.com.ar/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwbec632a2/pdfs/JBL_PARTYBOX_520_OM_Global_EN_V4.pdfRead 15 October 2026Section 6.3 says the bass button cycles level 1, level 2 or off. JBL Signature Sound and Movie are EQ presets named by StereoGuide.8Reviewstereoguide.com/bluetooth-speakers/mobile-outdoor/jbl-partybox-520-reviewRead 15 October 2026Review says the app has presets such as JBL Signature Sound and Movie, with more options than before. SoundGuys also names the JBL Signature EQ preset.
Wireless stereo pairing
Yes1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Pair two PartyBox 520 for true stereo via Auracast.
Speaker link protocols
Auracast, PartyTogether1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Auracast links the speaker to other Auracast-enabled JBL speakers. PartyTogether is from SoundGuys.6Reviewsoundguys.com/jbl-partybox-520-review-the-sweet-spot-in-jbls-partybox-lineup-140579Read 15 October 2026FAQ says it connects to other PartyBox speakers through PartyTogether in the app, or through Auracast to other JBL Auracast speakers.
Max linked speakers
Not available
Max Bluetooth group speakers
Not available

Connectivity

Bluetooth audio playback
Yes7Reviewsoundguys.com/jbl-partybox-720-vs-partybox-520-which-party-speaker-should-you-buy-150169Read 15 October 2026
Bluetooth version
5.41Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026
Bluetooth codecs
SBC, AAC7Reviewsoundguys.com/jbl-partybox-720-vs-partybox-520-which-party-speaker-should-you-buy-150169Read 15 October 2026Comparison says both the PartyBox 720 and PartyBox 520 use Bluetooth 5.4 with support for SBC and AAC codecs. Two aggregator spec listings show SBC only. JBL names no codec. SoundGuys is stored.
Bluetooth profiles
A2DP 1.4, AVRCP 1.61Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Technical Specifications say A2DP V1.4, AVRCP V1.6.
Bluetooth LE Audio
Yes4Press releasenews.harman.com/releases/jbl-solidifies-its-spot-as-theRead 15 October 2026Release table says Bluetooth v5.4 with LE audio for the PartyBox 520. Neither the spec sheet nor the manual names LE Audio or LC3.
Auracast
Yes1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 20264Press releasenews.harman.com/releases/jbl-solidifies-its-spot-as-theRead 15 October 2026Release table says multi-speaker connectivity with Auracast with JBL enabled speakers.
Multipoint
Yes2Owner's manualjbl.com.ar/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwbec632a2/pdfs/JBL_PARTYBOX_520_OM_Global_EN_V4.pdfRead 15 October 2026Section 6.1 says the speaker supports multi-point connection and a second Bluetooth device can be paired without disconnecting the first.
Multipoint source devices
22Owner's manualjbl.com.ar/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwbec632a2/pdfs/JBL_PARTYBOX_520_OM_Global_EN_V4.pdfRead 15 October 2026Section 6.1 describes a second device beside the first, so two.
Bluetooth range (claimed)
10m2Owner's manualjbl.com.ar/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwbec632a2/pdfs/JBL_PARTYBOX_520_OM_Global_EN_V4.pdfRead 15 October 2026The Bluetooth connection illustration in section 6.1 shows < 10 m (33 ft). Stored as 10.
Wi-Fi
Not available
Wi-Fi standards
Not available
Network audio protocols
Not available
USB audio input
Yes1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Use the USB-C to connect to your streaming or karaoke app with high quality audio.2Owner's manualjbl.com.ar/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwbec632a2/pdfs/JBL_PARTYBOX_520_OM_Global_EN_V4.pdfRead 15 October 2026Section 6.2 says to connect a PC, tablet or other mobile device for audio playback and recording.
USB drive playback
Yes2Owner's manualjbl.com.ar/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwbec632a2/pdfs/JBL_PARTYBOX_520_OM_Global_EN_V4.pdfRead 15 October 2026Section 6.2 says a USB storage device plugged into the USB-C port plays automatically, not for the EMEA region. The reference model is the US JBLPARTYBOX520AM.
USB audio file formats
MP3, WAV, FLAC2Owner's manualjbl.com.ar/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwbec632a2/pdfs/JBL_PARTYBOX_520_OM_Global_EN_V4.pdfRead 15 October 2026Section 6.2 format table lists MP3 (MP1, MP2, MP3), WAV and FLAC. The English spec sheet also lists WMA, which the manual table omits, so WMA is not stored. Both say the list is not for EMEA.
Ports
ConnectorCountRole
AC power1Mains power and battery charging
USB-C1USB drive music playback, USB audio input from a computer or phone, and charge output to mobile devices
3.5 mm audio1AUX audio input
3.5 mm audio1Daisy-chain audio input
3.5 mm audio1Daisy-chain audio output
6.35 mm audio1Combo XLR and 6.35 mm input for microphone 1
6.35 mm audio1Combo XLR and 6.35 mm input for microphone 2, guitar or line-in, set by a slider switch
Source2Owner's manualjbl.com.ar/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwbec632a2/pdfs/JBL_PARTYBOX_520_OM_Global_EN_V4.pdfRead 15 October 2026Back panel section 3.2 lists USB-C, AUX IN 3.5 mm, two microphone sockets (microphone 2/guitar/line-in with a slider switch), daisy-chain IN/OUT 3.5 mm and AC. SoundGuys and the spec sheet describe the microphone sockets as XLR and 6.35 mm combo jacks. Two daisy-chain jacks are read from the IN/OUT panel drawing.

Controls and software

Speakerphone
Not available
Voice assistants
Not available
Controls
Power, Bluetooth pairing, Multi-speaker connection, Volume knob, Play/pause, Next track, Previous track, Bass Boost, Light effect on/off, Light pattern knob, Strobe and starry light, Sound effect panel, Microphone volume, Microphone bass, Microphone treble, Microphone echo, Guitar/line-in volume, Microphone 1 gain, Microphone 2 or guitar gain, Microphone 2/guitar/line-in selector, Factory reset2Owner's manualjbl.com.ar/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwbec632a2/pdfs/JBL_PARTYBOX_520_OM_Global_EN_V4.pdfRead 15 October 2026Top panel section 3.1 and sections 6.3, 6.2.1, 9.2, 9.3 and 9.6 list these controls. Recording to USB is a button combination for microphone and guitar input only.
Companion app
JBL PartyBox8Reviewstereoguide.com/bluetooth-speakers/mobile-outdoor/jbl-partybox-520-reviewRead 15 October 2026Review names the JBL PartyBox app.
App platforms
iOS, Android8Reviewstereoguide.com/bluetooth-speakers/mobile-outdoor/jbl-partybox-520-reviewRead 15 October 2026Review says the JBL PartyBox app is for iOS and Android.
User firmware updates
Not available
Built-in lighting
Yes1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 20264Press releasenews.harman.com/releases/jbl-solidifies-its-spot-as-theRead 15 October 2026Release table says symmetric and themed light show.
Lighting modes
Neon, Loop, Bounce, Trim, Switch, Freeze, Strobe, Starry lights2Owner's manualjbl.com.ar/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwbec632a2/pdfs/JBL_PARTYBOX_520_OM_Global_EN_V4.pdfRead 15 October 2026Section 9.2 names the patterns NEON, LOOP, BOUNCE, TRIM, SWITCH and FREEZE. Strobe and starry light are separate toggles.

Smart home

We could not find any of these 3 fields. Show them
Matter controller
Not available
Thread border router
Not available
Zigbee hub
Not available

Battery and charging

Built-in battery
Yes1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Battery Specifications list a JBL BATTERY 600 pack.
Playback time (claimed)
15h1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Up to 15 hours. The manual footnote says it needs a predefined music source, light show and bass boost off, volume level 18 and a Bluetooth source. It varies with content and battery aging.
Playback with battery extension (claimed)
Not available
Battery energy
99.02Wh1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Battery type JBL BATTERY 600, Li-ion 99.02 Wh.
Battery capacity
4,584mAh1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Published as equivalent to 21.6 V / 4584 mAh.
Nominal battery voltage
21.6V1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Published as the 21.6 V equivalent of the 99.02 Wh pack.
Battery chemistry
Lithium-ion1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026
User-replaceable battery
Yes2Owner's manualjbl.com.ar/on/demandware.static/-/Sites-masterCatalog_Harman/default/dwbec632a2/pdfs/JBL_PARTYBOX_520_OM_Global_EN_V4.pdfRead 15 October 2026Section 6.7 explains replacing the battery with a JBL BATTERY600.
Full charge time
3h1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 20263 hours with the speaker off.
Quick charge duration
10min1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Charge for 10 minutes for an extra 2 hours of play time.
Playback after quick charge
2h1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 202610 minutes of charging gives an extra 2 hours of playtime.
Charging input rating
100-240 V AC, 50/60 Hz1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Power input 100 - 240 V ~ 50 / 60 Hz. No input current is published.
Max charging input
Not available
USB Power Delivery charging
Not available
Charges other devices
Yes1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026USB-C charge out lists PDO profiles up to 20 V / 1.5 A and PPS 5 - 16 V / 1.85 A. No watt figure is published, so none is stored.
Max power-bank output
Not available
Wireless charging
Not available

Durability

Dust and water rating
IPX41Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026
Floats
Not available
Drop resistance
Not available
Drop test height
Not available
Carry features
Telescopic handle, Wheels1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026

Measured

We could not find any of these 6 fields. Show them
Playback time (measured)
Not available
Max sound pressure (measured)
Not available
Low-frequency extension (measured)
Not available
High-frequency extension (measured)
Not available
Audio latency (measured)
Not available
Full charge time (measured)
Not available

Dimensions and weight

Front and side, drawn to scale.

Dimensions
Width415Height769Depth369mm(16.3 × 30.3 × 14.5 in)1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Product dimensions are labeled W x H x D: 415 x 769 x 369 mm. The telescopic handle is retracted.
Weight
25,500g(56.2 lb)1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Net weight 25.5 kg. Gross weight 29.4 kg is not stored.
Body materials
Post-consumer recycled plastic, Metal grille1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026The sheet says it incorporates post-consumer recycled plastic. The metal grille is from SoundGuys.6Reviewsoundguys.com/jbl-partybox-520-review-the-sweet-spot-in-jbls-partybox-lineup-140579Read 15 October 2026Review says a tough plastic exterior with lighting effects behind its metal grille.

Certifications

We could not find any of these 2 fields. Show them
FCC IDs
Not available
Other certifications
Not available

In the box

In the box
JBL PartyBox 520, AC power cord, Quick start guide, Safety instructions and warranty card1Maker spec sheet (PDF)d21buns5ku92am.cloudfront.net/68766/documents/56331-1741687011-JBL_Party_Box_520_Specsheet_EN-5a97bd.pdfRead 15 October 2026Sheet lists the speaker, quick-start guide, safety instruction and warranty card, and an AC power cord. Cord quantity and plug type vary by region.

Warranty

Manufacturer warranty (source market)
1year5Retailer pageabt.com/JBL-PartyBox-520-Portable-Speaker-Bluetooth-in-Black-JBLPARTYBOX520AM/p/218822.htmlRead 15 October 2026Retailer lists parts 1 year limited and labor 1 year limited for the US model.

Compare with

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Sources

We read 8 sources for this wireless speaker. The numbers match the markers in the sheet.

  1. Read 15 October 2026Backs 32 fields
  2. Read 15 October 2026Backs 12 fields
  3. Read 15 October 2026Backs 2 fields
  4. Read 15 October 2026Backs 6 fields
  5. Read 15 October 2026Backs 6 fields
  6. Read 15 October 2026Backs 4 fields
  7. Read 15 October 2026Backs 2 fields
  8. Read 15 October 2026Backs 3 fields

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