Harman Kardon Onyx Studio 9 vs Tribit Stormbox Blast 2

Last updated: October 1, 2026

Short answer: the Tribit Stormbox Blast 2 for deep bass, the Onyx Studio 9 for a cleaner balance. The Blast 2 has pretty deep bass but sounds quite muddy with the boosted lower and upper bass. The Onyx Studio 9 adds Auracast multi-speaker connection alongside classic stereo pairing, though it has slightly recessed mids, a boost in the upper mids and rolled off upper treble.

Harman Kardon Onyx Studio 9 vs Tribit Stormbox Blast 2

Buy the Harman Kardon Onyx Studio 9. It is rated higher for sound quality than the Tribit Stormbox Blast 2 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.

Battery life favors the Tribit Stormbox Blast 2: rated for 30 hours against 8 hours for the Harman Kardon Onyx Studio 9.

There is a real gap in water resistance: the Tribit Stormbox Blast 2 at IP67 (brief submersion) against the Harman Kardon Onyx Studio 9, which has no water resistance.

Looking for alternatives? See the complete Portable Bluetooth rankings.

Buy the Harman Kardon Onyx Studio 9 at Amazon ($189.99) →Buy the Tribit Stormbox Blast 2 at Amazon ($279.99) →

Specifications Side By Side

Harman Kardon Onyx Studio 9 Tribit Stormbox Blast 2
Price$189.99$279.99
Ranked#15 of 90 in Boombox Size Portable Bluetooth Speakers#31 of 90 in Boombox Size Portable Bluetooth Speakers
Bass Extension (-10dB)41Hz40Hz
Maximum SPL101dB (measured by Alan Ross Reviews)110dB (measured by Alan Ross Reviews)
IP RatingNoneIP67
Power InputAC Power Cable (2-Prong)AC Power Cable or 10w USB-C
StereoYesYes
OmnidirectionalNoNo
TWSYesYes
Weight9.3 lbs (4.2 kg)19.2 lbs (8.7 kg)
AppYes (Harman Kardon One app)Yes (Tribit app)
BluetoothYesYes
Bluetooth CodecsSBCSBC, AAC
EQYes (App EQ)Yes (10 band)
Party ModeYes (Auracast)No
USB PlaybackNoNo
Bluetooth Version5.35.4
Battery Life8 hours (Manufacturer specified)30 hours (Manufacturer specified)
Amplifier Power50W RMS200W AC / 180W battery
Dimensions11.4” x 11.3” x 5.1” (289.2 x 287.5 x 130 mm)18.7” x 7.6” x 10.2” (476 x 193 x 259 mm)
Drivers120mm woofer + 3x 20mm tweeters1x ~180x110mm rectangular subwoofer + 2x ~80mm mid drivers + 2x ~25mm tweeters
Digital Aux InputNoNo
Aux InputNoYes
StrapNoNo
Microphone Input-Yes (2x 6.35mm)
Power Bank-Yes (USB-A)
Built-in Microphone-No
FM Tuner-No
MicroSD Playback-No
Buy the Harman Kardon Onyx Studio 9 at Amazon ($189.99) →Buy the Tribit Stormbox Blast 2 at Amazon ($279.99) →

How Harman Kardon Onyx Studio 9 compares with other leading options:

Prices on this page were last checked October 2, 2026 at 10:18 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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The Two Speakers In Full

Harman Kardon Onyx Studio 9: $189.99 Amazon eBay

Harman Kardon Onyx Studio 9 ranking card

Older models: the Harman Kardon Onyx Studio 8 (ranked higher, rated 4.1/5), the Harman Kardon Onyx Studio 7 (ranked higher, rated 4.1/5), the Harman Kardon Onyx Studio 6 (ranked higher, rated 4.1/5), the Harman Kardon Onyx Studio 5 (ranked lower, rated 3.9/5) and the Harman Kardon Onyx Studio 4 (rated 3.3/5).

Pros: An elegant 4.2kg living-room portable with a measured 41Hz -10dB bass point, 101dB maximum level, three tweeters, app EQ, stereo pairing and Auracast multi-speaker linking. Reviews praise its balanced, smooth presentation and non-fatiguing treble, making it a more music-focused choice than most party speakers. Measured bass extension of 41Hz (-10dB).

Cons: It has no water resistance, aux input or USB playback, and its eight-hour claimed battery life is short for an outdoor portable. Bass is less deep than some earlier Onyx Studio models, while the slightly recessed mids and rolled-off top end mean it is not the most open or detailed option; it still charges from an AC power cable rather than USB-C.

Full Harman Kardon Onyx Studio 9 review and specifications →

Amplifier Power50W RMS
AppYes (Harman Kardon One app)
Aux InputNo
Bass Extension (-10dB)41Hz
Battery Life8 hours (Manufacturer specified)
BluetoothYes
Bluetooth CodecsSBC
Bluetooth Version5.3
Digital Aux InputNo
Dimensions11.4” x 11.3” x 5.1” (289.2 x 287.5 x 130 mm)
Drivers120mm woofer + 3x 20mm tweeters
EQYes (App EQ)
IP RatingNone
Maximum SPL101dB (measured by Alan Ross Reviews)
OmnidirectionalNo
Party ModeYes (Auracast)
Power InputAC Power Cable (2-Prong)
StereoYes
StrapNo
TWSYes
USB PlaybackNo
Weight9.3 lbs (4.2 kg)
Check current price at Amazon ($189.99) →Search eBay for Harman Kardon Onyx Studio 9 →

Tribit Stormbox Blast 2: $279.99 Amazon eBay

Tribit Stormbox Blast 2 ranking card

Older model: the Tribit Stormbox Blast (ranked higher, rated 4.5/5).

Pros: Pretty deep bass. Measured bass extension of 40Hz (-10dB).

Cons: Sounds quite muddy with the boosted lower and upper bass. Boosted treble around 6kHz. Xbass mode makes it sound even more muddy. Nowhere near as neutral and balanced as the first Blast and a big downgrade unless you only care about max volume

Setup: Try the EQ from Alan Ross at this timestamp of his video

Full Tribit Stormbox Blast 2 review and specifications →

Amplifier Power200W AC / 180W battery
AppYes (Tribit app)
Aux InputYes
Bass Extension (-10dB)40Hz
Battery Life30 hours (Manufacturer specified)
BluetoothYes
Bluetooth CodecsSBC, AAC
Bluetooth Version5.4
Built-in MicrophoneNo
Digital Aux InputNo
Dimensions18.7” x 7.6” x 10.2” (476 x 193 x 259 mm)
Drivers1x ~180x110mm rectangular subwoofer + 2x ~80mm mid drivers + 2x ~25mm tweeters
EQYes (10 band)
FM TunerNo
IP RatingIP67
Maximum SPL110dB (measured by Alan Ross Reviews)
MicroSD PlaybackNo
Microphone InputYes (2x 6.35mm)
OmnidirectionalNo
Party ModeNo
Power BankYes (USB-A)
Power InputAC Power Cable or 10w USB-C
StereoYes
StrapNo
TWSYes
USB PlaybackNo
Weight19.2 lbs (8.7 kg)
Check current price at Amazon ($279.99) →Search eBay for Tribit Stormbox Blast 2 →