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About product
The JBL Boombox 4 is a high-performance portable Bluetooth speaker released in September 2025. It features a significant redesign focused on delivering more power while being lighter than its predecessor, the Boombox 3.
Key Features and Specifications
Audio Performance: Delivers up to 210W RMS in AC mode (dropping slightly to ~200W on battery). It uses a revised driver layout with two 5-inch woofers, two 0.75-inch tweeters, and three passive radiators (including a new rear-facing one).
AI Sound Boost: Incorporates AI technology that analyzes music in real-time to optimize acoustic output and minimize distortion at high volumes.
Battery & Playtime: Offers up to 28 hours of standard playtime, extendable to 34 hours with "Playtime Boost".
Replaceable Battery: A major new feature is the swappable battery pack (compatible with the JBL PartyBox 520 and 720), which allows for easy maintenance and extended off-grid use.
Connectivity:
Uses Bluetooth 5.4 for improved range and stability.
Supports Auracast™ for syncing with unlimited Auracast-enabled JBL speakers.
Features a USB-C port for charging external devices and supporting lossless audio playback from compatible sources.
Durability: Rated IP68 waterproof and dustproof, an upgrade from the IP67 rating of previous models, making it more resistant to sand and complete immersion
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Product description
The JBL Boombox 4 is a high-performance portable Bluetooth speaker released in September 2025. It features a significant redesign focused on delivering more power while being lighter than its predecessor, the Boombox 3.
Key Features and Specifications
Audio Performance: Delivers up to 210W RMS in AC mode (dropping slightly to ~200W on battery). It uses a revised driver layout with two 5-inch woofers, two 0.75-inch tweeters, and three passive radiators (including a new rear-facing one).
AI Sound Boost: Incorporates AI technology that analyzes music in real-time to optimize acoustic output and minimize distortion at high volumes.
Battery & Playtime: Offers up to 28 hours of standard playtime, extendable to 34 hours with "Playtime Boost".
Replaceable Battery: A major new feature is the swappable battery pack (compatible with the JBL PartyBox 520 and 720), which allows for easy maintenance and extended off-grid use.
Connectivity:
Uses Bluetooth 5.4 for improved range and stability.
Supports Auracast™ for syncing with unlimited Auracast-enabled JBL speakers.
Features a USB-C port for charging external devices and supporting lossless audio playback from compatible sources.
Durability: Rated IP68 waterproof and dustproof, an upgrade from the IP67 rating of previous models, making it more resistant to sand and complete immersion
Frequently Asked Questions
- What are the audio performance specifications of the JBL Boombox 4?
- How does the JBL Boombox 4 differ from its predecessor, the Boombox 3?
- Is the JBL Boombox 4 a good choice for outdoor events?
- What is the battery life of the JBL Boombox 4 and does it support battery replacement?
- How does the AI Sound Boost technology work in the JBL Boombox 4?
- Does the JBL Boombox 4 support Auracast™ technology?
- Can the JBL Boombox 4 be used to charge external devices?