The Harman Kardon Onyx Studio 8 has become a popular choice for audio enthusiasts in 2026. Its sleek design combined with powerful sound quality makes it a standout in the portable speaker market. But one key feature many users look for is multi-room audio support. In this review, we explore whether the Onyx Studio 8 meets this demand.

Design and Build Quality

The Onyx Studio 8 features a modern, minimalist design with a durable fabric exterior and a sturdy handle for portability. Its compact size makes it easy to carry around, yet it packs impressive sound performance. The build quality is premium, reflecting Harman Kardon’s reputation for high-end audio devices.

Sound Performance

Equipped with advanced drivers and bass radiators, the Onyx Studio 8 delivers rich, balanced sound with deep bass and clear treble. Whether indoors or outdoors, the speaker maintains high audio fidelity. Volume levels are sufficient for small to medium gatherings, making it versatile for various settings.

Multi-room Audio Support

One of the most anticipated features in 2026 is multi-room audio capability. The Onyx Studio 8 supports this feature through integration with Harman Kardon’s proprietary app and compatibility with major smart home ecosystems. Users can connect multiple speakers across different rooms to synchronize music playback seamlessly.

However, it’s important to note that the Onyx Studio 8 does not natively support multi-room audio via standard protocols like Google Cast or Apple AirPlay 2. Instead, it relies on the Harman Kardon app for multi-speaker control, which may limit flexibility compared to other brands.

Setup and Connectivity

Setting up the Onyx Studio 8 is straightforward. It connects via Bluetooth 5.2, offering a stable connection range. For multi-room setup, users must ensure all speakers are within the same Wi-Fi network and use the Harman Kardon app to group speakers and control playback.

Battery Life and Portability

The speaker offers up to 8 hours of playback on a full charge, depending on volume levels. Its portable design, coupled with a built-in handle, makes it ideal for outdoor activities and on-the-go listening. The quick charge feature allows for rapid power replenishment, minimizing downtime.

Conclusion

The Harman Kardon Onyx Studio 8 is a stylish and powerful portable speaker that excels in sound quality and build. While it supports multi-room audio through the Harman Kardon app, it lacks native support for popular multi-room protocols like AirPlay 2 or Google Cast. For users seeking an easy multi-room setup with broad compatibility, other options may be more suitable. Nonetheless, the Onyx Studio 8 remains a top contender for high-quality portable audio in 2026.