JBL Boombox 4 vs Harman Kardon Onyx Studio 5

Last updated: August 13, 2026

Short answer: the JBL Boombox 4 for better sound quality, the Harman Kardon Onyx Studio 5 for the lower price. The JBL Boombox 4 ranks #17 of 73 boombox speakers at $549.95. The Harman Kardon Onyx Studio 5 ranks #19 at $499.99, $49.96 cheaper.

What the JBL Boombox 4 gets right: It has pretty insane output capability for its size. Set against that: it’s pretty overpriced for the category, only really improves on the Boombox 3 because it has 7 EQ bands instead of 3 and can be better tuned (try Oluv’s EQ for it), sounds worse than the Boombox 3 out of the box, and drops the Aux input.

The case for the Harman Kardon Onyx Studio 5: It has an elegant circular design with a carrying handle, a bass-heavy sound with balanced mids and highs, and a rechargeable Li-ion battery rated for 7 to 8 hours at 40-50% volume. The catch: the sound is warm with boosted bass, the battery only lasts 8 hours at medium volume, and it’s not as loud as others.

Buy the JBL Boombox 4 if sound quality matters more than the price. Buy the Harman Kardon Onyx Studio 5 if the price matters more than sound quality.

If battery life is a priority, the JBL Boombox 4 is rated for 28 hours versus 8 hours for the Harman Kardon Onyx Studio 5.

JBL Boombox 4 vs Harman Kardon Onyx Studio 5

Specifications Side By Side

JBL Boombox 4 Harman Kardon Onyx Studio 5
Price$549.95$499.99
Ranked#17 of 73 in Boombox Size Portable Bluetooth Speakers#19 of 73 in Boombox Size Portable Bluetooth Speakers
AppYesNo
Aux InputNoYes
Bass Extension (-10dB)41Hz-
Battery Life28 hours (Manufacturer specified)8 hours (Manufacturer specified)
EQNoNo
IP RatingIP68IPX7
Bluetooth LatencyAAC 144ms, SBC 48ms-
Max Volume115dB-
Party ModeYes (Auracast)Yes (Wireless Dual Sound)
Power InputAC Power cordDC Barrel Connector (19V/2.1A)
Removable BatteryYes-
StereoYesPartially (1 woofer)
Weight13.2 lbs / 5.98 kg6.6 lbs / 3 kg
Bluetooth CodecsSBC, LC3, AACSBC
Built in MicrophoneNoYes
Power BankYes (USB-C, up to 30W)No
TWSYesYes (see https://www.reddit.com/r/Bluetooth_Speakers/comments/w339x5/how_to_harman_kardon_onyx_studio_5_6_dual_sound/)
Digital Aux InputYes (USB-C)No
USB PlaybackNoNo
FM TunerNo-
Microphone InputNo-
MicroSD PlaybackNo-
Output Power210W AC / 200W battery50W
Dimensions20.1" x 10.2" x 8.3" (510 x 260 x 210 mm)11.3" x 11.3" (285.8 x 285.8 mm)
Drivers2x 123mm woofers + 2x 20mm tweeters with passive radiators2x 75mm woofers + 2x 20mm tweeters

The Two Speakers In Full

JBL Boombox 4: $549.95 Amazon Bhphotovideo

JBL Boombox 4 ranking card

Pros: Pretty insane output capability for the size.

Cons: Pretty overpriced for the category. Better than the Boombox 3 mostly because there are more 7 EQ bands instead of just 3 and it can be better tuned. Try Oluv’s EQ for it. Out of the box sounds worse than the Boombox 3. No Aux input.

AppYes
Aux InputNo
Bass Extension (-10dB)41Hz
Battery Life28 hours (Manufacturer specified)
Bluetooth CodecsSBC, LC3, AAC
Bluetooth LatencyAAC 144ms, SBC 48ms
Built in MicrophoneNo
Digital Aux InputYes (USB-C)
Dimensions20.1" x 10.2" x 8.3" (510 x 260 x 210 mm)
Drivers2x 123mm woofers + 2x 20mm tweeters with passive radiators
EQNo
FM TunerNo
IP RatingIP68
Max Volume115dB
MicroSD PlaybackNo
Microphone InputNo
Output Power210W AC / 200W battery
Party ModeYes (Auracast)
Power BankYes (USB-C, up to 30W)
Power InputAC Power cord
Removable BatteryYes
StereoYes
TWSYes
USB PlaybackNo
Weight13.2 lbs / 5.98 kg

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

Harman Kardon Onyx Studio 5: $499.99 Amazon

Harman Kardon Onyx Studio 5 ranking card

Pros: Elegant circular design with carrying handle. Bass-heavy with balanced mids and highs. Rechargeable Li-ion battery rated 7-8 hours at 40-50% volume.

Cons: Warm sound with boosted bass. 8 hour battery at medium volume. Not at loud as others.

AppNo
Aux InputYes
Battery Life8 hours (Manufacturer specified)
Bluetooth CodecsSBC
Built in MicrophoneYes
Digital Aux InputNo
Dimensions11.3" x 11.3" (285.8 x 285.8 mm)
Drivers2x 75mm woofers + 2x 20mm tweeters
EQNo
IP RatingIPX7
Output Power50W
Party ModeYes (Wireless Dual Sound)
Power BankNo
Power InputDC Barrel Connector (19V/2.1A)
StereoPartially (1 woofer)
TWSYes (see https://www.reddit.com/r/Bluetooth_Speakers/comments/w339x5/how_to_harman_kardon_onyx_studio_5_6_dual_sound/)
USB PlaybackNo
Weight6.6 lbs / 3 kg

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