JBL Xtreme 4 Review

JBL Xtreme 4 Portable Bluetooth Speaker

JBL is globally renowned for its high-quality audio products. Whether it’s headphones, stereo speakers, or portable speakers, JBL ensures top-notch quality. Today, we have the pleasure of reviewing one of their premier portable speakers, the JBL Xtreme 4. Positioned at the top of JBL’s portable speaker range, the Xtreme 4 aims to maximize sound quality, volume, and portability in one robust device. Can it be rugged, convenient, and great sounding? Let’s find out in this review.

What’s in the Box:

  • JBL Xtreme 4
  • USB-C Power cord with wall adapter
  • Carrying strap
  • Quick start guide
  • Warranty/safety info

JBL Logo on JBL Xtreme 4 portable Bluetooth speaker

Build Quality

The build quality of the Xtreme 4 is exceptional. Designed for versatility, it’s perfect for indoor use, poolside, or even outdoor adventures. The Xtreme 4 lives up to its “extreme” name, featuring parts made from recycled plastic and fabric, resulting in an IP67 waterproof and dustproof rating. This means it can withstand rain and even light submersion in water.

The speaker comes in three stylish colors: black, blue, and camo. It boasts a rugged design with a prominent JBL logo on the front. The top panel houses play/pause and volume controls, power on/off, Bluetooth control, and a button for connecting with other speakers via Auracast. Large rubber woofers adorn each side, while the flat bottom ensures stability. The rear USB port is convenient for charging, and works as a charging bank for phones as well. The device includes strap hooks with a built-in bottle opener on the matching strap. Wherever you go, the JBL Xtreme 4 is ready to bring the party.

Control panel on JBL Xtreme 4 portable Bluetooth Speaker


The Xtreme 4 features a straightforward driver design with two woofers, two tweeters, and dual JBL Bass Radiators. This setup aims to create a stereo effect from a single device. For true stereo sound, you can pair two Xtreme 4 speakers together. Additionally, using Auracast, you can connect the Xtreme 4 to other compatible JBL portable speakers, enabling the same music to play across multiple locations. This feature enhances the versatility of the Xtreme 4 as an audio device.

USB C port on JBL Xtreme 4 Portable Bluetooth speaker

Functionality & Battery Life

As a Bluetooth speaker, the Xtreme 4 is Bluetooth 5.3 compatible and supports Auracast. Its battery lasts 24 hours, providing a full day of performance before needing a recharge. The “Playtime Boost” mode optimizes playback and functionality, extending battery life by an extra six hours when needed.

Side woofer on JBL Xtreme 4 portable Bluetooth speaker

Sound Impressions

The Xtreme 4 delivers impressive bass, thanks to its dual woofers and dual radiators. Despite the strong bass, it doesn’t overshadow the overall music playback, making it ideal for parties and gatherings. From R&B to disco to rock, the speaker delivers music as it should sound.

The mid-range is more prominent than expected, providing clear vocals and easy-to-understand spoken word audio like podcasts. There’s a slight elevation in the mid-range that adds clarity, especially in noisy environments.

The top end is clear and present, contributing to a warm and pleasant sound signature. While not particularly splashy, it complements the overall sound profile well.

The soundstage is slightly limited due to the single speaker setup, but the Xtreme 4 can still fill a room effectively. For a true stereo experience, consider using a dual speaker setup. However, the main purpose of this portable speaker is to get loud and fill any space with quality sound, which it does successfully.

Final Thoughts

The JBL Xtreme 4 is a remarkable device, combining robustness with advanced features. JBL has created a speaker that gets loud without compromising sound quality and can endure various terrains with ample battery life. If you’re seeking a high-quality, durable, and powerful portable speaker, this device is an excellent choice.

The JBL Xtreme 4 is available at Audio46.

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