Harman Kardon Onyx Studio 7 vs JBL Boombox 3 Wifi

Last updated: August 18, 2026

Short answer: the Harman Kardon Onyx Studio 7. It ranks #12 of 73 boombox speakers by sound quality at $298.90; the JBL Boombox 3 Wifi ranks #20 and costs $389.95, so there is not much of a tradeoff to weigh.

The case for the Harman Kardon Onyx Studio 7: Warm sound with boosted bass. The tradeoff: Sounds a little sterile.

What the JBL Boombox 3 Wifi offers: Loudest speaker in the category. Watch for: Bass boosted.

Buy the Harman Kardon Onyx Studio 7. It ranks higher for sound quality than the JBL Boombox 3 Wifi and costs less, so there is no real case for the other one.

If battery life is a priority, the JBL Boombox 3 Wifi is rated for 24 hours versus 8 hours for the Harman Kardon Onyx Studio 7.

If water resistance matters to you, the JBL Boombox 3 Wifi at IP67 (brief submersion) holds up far better than the Harman Kardon Onyx Studio 7 at no water resistance.

Buy the Harman Kardon Onyx Studio 7 at Amazon ($298.90) →Buy the JBL Boombox 3 Wifi at Amazon ($389.95) →

Harman Kardon Onyx Studio 7 vs JBL Boombox 3 Wifi

Specifications Side By Side

Harman Kardon Onyx Studio 7 JBL Boombox 3 Wifi
Price$298.90$389.95
Ranked#12 of 73 in Boombox Size Portable Bluetooth Speakers#20 of 73 in Boombox Size Portable Bluetooth Speakers
Aux InputYesYes
Aux Latency0ms-
Bass Extension (-10dB)37Hz43Hz
Battery Life8 hours (Manufacturer specified)24 hours (Manufacturer specified)
Built in MicrophoneYesNo
IP RatingNoneIP67
Bluetooth Latency266ms-
Max Volume96dB111dB
Party ModeYes (Wireless Dual Sound)No
Power InputDC Barrel Connector (19V/2.1A)AC Power cable
StereoPartially (1 woofer)Yes
OmnidirectionalNoNo
TWSNoYes
Weight6.4 lbs / 2.9 kg14.6 lbs / 6.6 kg
Bluetooth CodecsSBCSBC
AppNoNo
EQNoNo
Power BankNoYes (USB-A, 5V/2A)
USB PlaybackNoNo
Output Power50W RMS200W AC / 140W battery
Dimensions11.3" x 11.3" (285.8 x 285.8 mm) (round design)19.1" x 10.1" x 7.9" (484 x 256 x 200 mm)
Drivers2x 75mm woofers + 2x 20mm tweeters1x 189mm subwoofer + 2x 81mm woofers + 2x 20mm tweeters
Digital Aux InputNoNo
Wifi-Yes
Buy the Harman Kardon Onyx Studio 7 at Amazon ($298.90) →Buy the JBL Boombox 3 Wifi at Amazon ($389.95) →

More useful head-to-heads from the same speaker class:

The Two Speakers In Full

Harman Kardon Onyx Studio 7: $298.90 Amazon

Harman Kardon Onyx Studio 7 ranking card

Pros: Warm sound with boosted bass.

Cons: Sounds a little sterile. 8 hour battery at medium volume, teeny bit less bass than the Onyx 6. Not at loud as others. No water rating.

Full Harman Kardon Onyx Studio 7 review and specifications →

AppNo
Aux InputYes
Aux Latency0ms
Bass Extension (-10dB)37Hz
Battery Life8 hours (Manufacturer specified)
Bluetooth CodecsSBC
Bluetooth Latency266ms
Built in MicrophoneYes
Digital Aux InputNo
Dimensions11.3" x 11.3" (285.8 x 285.8 mm) (round design)
Drivers2x 75mm woofers + 2x 20mm tweeters
EQNo
IP RatingNone
Max Volume96dB
OmnidirectionalNo
Output Power50W RMS
Party ModeYes (Wireless Dual Sound)
Power BankNo
Power InputDC Barrel Connector (19V/2.1A)
StereoPartially (1 woofer)
TWSNo
USB PlaybackNo
Weight6.4 lbs / 2.9 kg
Check current price at Amazon ($298.90) →Search eBay for Harman Kardon Onyx Studio 7 →

As an eBay Partner, we may be compensated if you make a purchase.

JBL Boombox 3 Wifi: $389.95 Amazon

JBL Boombox 3 Wifi ranking card

Pros: Loudest speaker in the category. Slightly better frequency response than the non-wifi version.

Cons: Bass boosted. Dip at 160hz

Full JBL Boombox 3 Wifi review and specifications →

AppNo
Aux InputYes
Bass Extension (-10dB)43Hz
Battery Life24 hours (Manufacturer specified)
Bluetooth CodecsSBC
Built in MicrophoneNo
Digital Aux InputNo
Dimensions19.1" x 10.1" x 7.9" (484 x 256 x 200 mm)
Drivers1x 189mm subwoofer + 2x 81mm woofers + 2x 20mm tweeters
EQNo
IP RatingIP67
Max Volume111dB
OmnidirectionalNo
Output Power200W AC / 140W battery
Party ModeNo
Power BankYes (USB-A, 5V/2A)
Power InputAC Power cable
StereoYes
TWSYes
USB PlaybackNo
Weight14.6 lbs / 6.6 kg
WifiYes
Check current price at Amazon ($389.95) →Search eBay for JBL Boombox 3 Wifi →

As an eBay Partner, we may be compensated if you make a purchase.