The Onyx Studio 9 Grey is the lighter take on Harman Kardon’s round speaker. The grey fabric and aluminium frame blend into white walls, pale wood and beige sofas, so in a bright room it looks like part of the décor instead of a black circle on the shelf. The sound hardware is the same as the black version: four drivers rated at 50 W RMS, Bluetooth 5.3, Auracast and a battery that Harman Kardon rates at up to 8 hours.
Table of Contents
Why choose the Onyx Studio 9 Grey
Grey is for light interiors: a white or cream living room, a bedroom with linen and light oak, a home office where the speaker sits in the background of video calls. It avoids the heavy contrast black creates against pale walls.
It also ages differently. Grey fabric hides everyday dust and lint better than black, which matters in the UAE where fine dust settles fast. Its weakness is darker stains, such as coffee drops, which show sooner than on black. Blot spills straight away with a dry cloth and brush the fabric lightly every few weeks to keep the Onyx Studio 9 Grey even in tone.
Onyx Studio 9 Grey in the bedroom and home office
At up to 8 hours on battery (depending on volume and content), you can lift it by the aluminium handle and carry it from the desk to the bedroom in the evening without a cable. When it lives on one desk, keep it plugged in: the mains input accepts 100-240 V AC at 50/60 Hz, so it runs directly from UAE sockets with the included power cable.
Two-device pairing helps in a shared home office: a laptop and a phone can both stay connected, and the USB-C port (5 V / 2.1 A max) can top up a phone from the speaker.
Sound and power figures, with context
Harman Kardon rates the output at 50 W RMS from one 120 mm woofer and three 20 mm tweeters. There is no published peak figure, and the company does not state whether battery mode delivers the same power as mains. Frequency response is 50 Hz to 20 kHz at -6 dB, and signal-to-noise ratio is above 80 dB. The Harman Kardon One app provides EQ adjustment.
Grouping speakers with Auracast
If you already own a Harman Kardon speaker, or an Auracast-compatible speaker from another brand, the Onyx Studio 9 Grey can join it so the same music plays in several rooms. Group control sits in the Harman Kardon One app, and Bluetooth 5.3 handles the connection. Harman Kardon does not list supported codecs.
Who This Is Not For
Outdoor users: there is no published IP rating, so keep the Onyx Studio 9 Grey away from pools and sprinklers. Anyone who wants a speakerphone: no microphone is listed. People who move the speaker daily may find 3.36 kg heavy. And if you plan long parties away from power, up to 8 hours of battery may not be enough.
Ordering and support
Orders ship to every emirate within three business days, and delivery is free from AED 300; under that, the checkout lists the current charge. Items that arrive faulty or not as described can be returned within 14 days, and transit damage should be reported to us within 48 hours. The Onyx Studio 9 Grey comes with a 1-year warranty from Totot.
Prefer the darker classic look? It is also available in Black.
Technical Specifications
- Model: Harman Kardon Onyx Studio 9
- Colour: Grey
- Drivers: 1 × 120 mm woofer, 3 × 20 mm tweeters
- Rated output: 50 W RMS (no peak figure published)
- Frequency response: 50 Hz – 20 kHz (-6 dB)
- Signal-to-noise ratio: > 80 dB
- Bluetooth: 5.3, A2DP 1.4, AVRCP 1.6; two devices at once
- Multi-speaker: Auracast
- App: Harman Kardon One (EQ, setup, grouping)
- Battery: Li-ion 17.15 Wh (3.63 V / 4722 mAh)
- Playtime: Up to 8 h (depends on volume and content)
- Charging time: About 4 h
- Mains input: 100-240 V AC, 50/60 Hz (power cable included)
- USB-C port: 5 V / 2.1 A max, for charging a phone
- Water and dust rating: None published
- Dimensions: 289.2 × 287.5 × 130 mm
- Weight: 3.36 kg
- In the box: Speaker, power cable, quick start guide, safety sheet, warranty card
- Warranty: 1-year warranty from Totot
All figures are from Harman Kardon’s official Onyx Studio 9 page and spec sheet. Full details are published on the Harman Kardon official website.
FAQ
Does the Onyx Studio 9 Grey show dust?
No, less than black. Grey fabric hides light dust and lint well; darker stains show more, so blot spills quickly.
Is the grey version quieter or different in sound?
No. Grey and Black share the same drivers, 50 W RMS rating and specifications.
Can I keep it plugged in all the time?
Yes. It runs from the included power cable on 100-240 V AC, which covers UAE sockets.
Can it charge my phone?
Yes. The USB-C port supplies up to 5 V / 2.1 A.
Will it pair with my other speakers?
Yes, if they support Auracast: Harman Kardon models or compatible speakers from other brands.
Is it suitable for a pool party?
No. Harman Kardon publishes no water or dust rating for the Onyx Studio 9.
Browse more in our Portable Speakers range. Every order from Totot carries a 1-year warranty covering manufacturing defects, with our 14-day return policy for defective or non-compliant items, and nationwide UAE delivery.
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