Harman Kardon Onyx Studio 7 vs Soundcore Boom 2 Plus

Last updated: September 29, 2026

Short answer: the Onyx Studio 7 remains a compact warm-sounding home speaker, whereas the Boom 2 Plus is the lighter speaker for users prepared to fine-tune it. Harman Kardon is 14 of 89, with Soundcore at 35 of 89.

Harman Kardon Onyx Studio 7 vs Soundcore Boom 2 Plus

The Onyx 7 has bass weight but less bass than the Onyx 6, an eight-hour medium-volume battery estimate, and a somewhat sterile character in addition to its warm tuning. The Boom 2 Plus is much easier to carry and may climb with a successful EQ tune, though its stock upper-bass lift and rolled-off treble need attention.

Buy the Harman Kardon Onyx Studio 7 if you want its distinctive form factor and an easygoing warm sound for moderate listening.

Buy the Soundcore Boom 2 Plus if portability and adjustable tuning are the more important qualities.

There is a real gap in water resistance: the Soundcore Boom 2 Plus at IPX7 (brief submersion) against the Harman Kardon Onyx Studio 7, which has no water resistance.

Looking for alternatives? See the complete Portable Bluetooth rankings.

Buy the Harman Kardon Onyx Studio 7 at Amazon ($248.90) →Buy the Soundcore Boom 2 Plus at Amazon ($179.99) →

Specifications Side By Side

Harman Kardon Onyx Studio 7 Soundcore Boom 2 Plus
Price$248.90$179.99
Ranked#14 of 89 in Boombox Size Portable Bluetooth Speakers#35 of 89 in Boombox Size Portable Bluetooth Speakers
Aux InputYesYes
Aux Latency0ms-
Bass Extension (-10dB)37Hz39Hz
Battery Life8 hours (Manufacturer specified)20 hours (Manufacturer specified)
Built-in MicrophoneYesYes
IP RatingNoneIPX7
Bluetooth Latency266ms-
Maximum SPL96dB (measured by Alan Ross Reviews)111dB (measured by Alan Ross Reviews)
Party ModeYes (Wireless Dual Sound)Yes (PartyCast 2.0)
Power InputDC Barrel Connector (19V/2.1A)USB-C
StereoPartially (1 woofer)Yes
OmnidirectionalNoNo
TWSNoYes
Weight6.4 lbs (2.9 kg)8.4 lbs (3.8 kg)
BluetoothYesYes
Bluetooth CodecsSBCSBC, AAC
AppNoYes
EQNoYes (Pro EQ + presets)
Power BankNoYes (USB-C, 5V/2A)
USB PlaybackNoNo
Amplifier Power50W RMS140W
Dimensions11.3” x 11.3” (285.8 x 285.8 mm) (round design)17.3” x 9.1” x 5.9” (440 x 230 x 150 mm)
Drivers120mm woofer + 2x 25mm tweeters2x 114mm (4.5”) woofers + 2x 19mm (0.75”) tweeters
Digital Aux InputNoNo
Bluetooth Version4.25.3
StrapNoYes (detachable strap)
MicroSD Playback-No
Lights-Yes
Buy the Harman Kardon Onyx Studio 7 at Amazon ($248.90) →Buy the Soundcore Boom 2 Plus at Amazon ($179.99) →

How Harman Kardon Onyx Studio 7 compares with other leading options:

Prices on this page were last checked September 29, 2026 at 3:43 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 7: $248.90 Amazon eBay

Harman Kardon Onyx Studio 7 ranking card

Newer model: the Harman Kardon Onyx Studio 9, ranked lower, rated 4.1/5.

Pros: The addition of dual tweeters gives the Studio 7 a wider, more spacious presentation than older Onyx models. It delivers strong, deep bass, useful large-room volume and can pair with a second Studio 7 for stereo. Measured bass extension of 37Hz (-10dB).

Cons: Consumer Reports finds the bass prominent and boomy, mids hazy, treble slightly smeared and the soundstage congested. Battery life remains only about eight hours, it has no water rating or advanced codecs, and it is not an especially loud outdoor speaker.

Full Harman Kardon Onyx Studio 7 review and specifications →

Amplifier Power50W RMS
AppNo
Aux InputYes
Aux Latency0ms
Bass Extension (-10dB)37Hz
Battery Life8 hours (Manufacturer specified)
BluetoothYes
Bluetooth CodecsSBC
Bluetooth Latency266ms
Bluetooth Version4.2
Built-in MicrophoneYes
Digital Aux InputNo
Dimensions11.3” x 11.3” (285.8 x 285.8 mm) (round design)
Drivers120mm woofer + 2x 25mm tweeters
EQNo
IP RatingNone
Maximum SPL96dB (measured by Alan Ross Reviews)
OmnidirectionalNo
Party ModeYes (Wireless Dual Sound)
Power BankNo
Power InputDC Barrel Connector (19V/2.1A)
StereoPartially (1 woofer)
StrapNo
TWSNo
USB PlaybackNo
Weight6.4 lbs (2.9 kg)
Check current price at Amazon ($248.90) →Search eBay for Harman Kardon Onyx Studio 7 →

Soundcore Boom 2 Plus: $179.99 Amazon B&H Photo Video eBay

Soundcore Boom 2 Plus ranking card

Older model: the Soundcore Motion Boom+ (ranked lower, rated 2.9/5).

Pros: Quite a bit lighter than most of the other boombox size speakers. This speaker will likely move up as we get a good EQ tune that makes it a lot more neutral. Measured bass extension of 39Hz (-10dB).

Cons: Warm tuning meaning a rolled off treble and some upper bass boost. Reasonably deep bass, but not as good as the top ranked.

Full Soundcore Boom 2 Plus review and specifications →

Amplifier Power140W
AppYes
Aux InputYes
Bass Extension (-10dB)39Hz
Battery Life20 hours (Manufacturer specified)
BluetoothYes
Bluetooth CodecsSBC, AAC
Bluetooth Version5.3
Built-in MicrophoneYes
Digital Aux InputNo
Dimensions17.3” x 9.1” x 5.9” (440 x 230 x 150 mm)
Drivers2x 114mm (4.5”) woofers + 2x 19mm (0.75”) tweeters
EQYes (Pro EQ + presets)
IP RatingIPX7
LightsYes
Maximum SPL111dB (measured by Alan Ross Reviews)
MicroSD PlaybackNo
OmnidirectionalNo
Party ModeYes (PartyCast 2.0)
Power BankYes (USB-C, 5V/2A)
Power InputUSB-C
StereoYes
StrapYes (detachable strap)
TWSYes
USB PlaybackNo
Weight8.4 lbs (3.8 kg)
Check current price at Amazon ($179.99) →Check current price at B&H Photo Video →Search eBay for Soundcore Boom 2 Plus →