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This is the Harman Kardon Onyx Studio 9 I reviewed and sound-tested in the video. If you want a premium-looking speaker with refined sound, automatic self-tuning, and future-facing features like Auracast plus Harman Kardon One app support, this is a solid pick in the under-$300 range—just keep expectations realistic on the 8-hour battery.
Pros
- +Premium, elegant design with sturdy aluminum frame/handle
- +Refined sound with deep, punchy bass and clear vocals
- +Automatic self-tuning on power-up
- +Auracast support for multi-speaker setups (including other brands)
- +Bluetooth 5.3 with stable connection and multipoint pairing
- +Now supported in the Harman Kardon One app with firmware updates and EQ
Cons
- -Battery life is only up to 8 hours and charging takes around 5 hours
- -Not the most portable option at 3.4 kg
- -Onyx Studio 8 still has better stereo balance and fullness
Featured in this video
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Highlights
- +Premium, elegant design with sturdy aluminum frame/handle
- +Refined sound with deep, punchy bass and clear vocals
- +Automatic self-tuning on power-up
Recommended by
OCM Reviews