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.
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 |
| App | Yes | No |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 41Hz | - |
| Battery Life | 28 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| EQ | No | No |
| IP Rating | IP68 | IPX7 |
| Bluetooth Latency | AAC 144ms, SBC 48ms | - |
| Max Volume | 115dB | - |
| Party Mode | Yes (Auracast) | Yes (Wireless Dual Sound) |
| Power Input | AC Power cord | DC Barrel Connector (19V/2.1A) |
| Removable Battery | Yes | - |
| Stereo | Yes | Partially (1 woofer) |
| Weight | 13.2 lbs / 5.98 kg | 6.6 lbs / 3 kg |
| Bluetooth Codecs | SBC, LC3, AAC | SBC |
| Built in Microphone | No | Yes |
| Power Bank | Yes (USB-C, up to 30W) | No |
| TWS | Yes | Yes (see https://www.reddit.com/r/Bluetooth_Speakers/comments/w339x5/how_to_harman_kardon_onyx_studio_5_6_dual_sound/) |
| Digital Aux Input | Yes (USB-C) | No |
| USB Playback | No | No |
| FM Tuner | No | - |
| Microphone Input | No | - |
| MicroSD Playback | No | - |
| Output Power | 210W AC / 200W battery | 50W |
| Dimensions | 20.1" x 10.2" x 8.3" (510 x 260 x 210 mm) | 11.3" x 11.3" (285.8 x 285.8 mm) |
| Drivers | 2x 123mm woofers + 2x 20mm tweeters with passive radiators | 2x 75mm woofers + 2x 20mm tweeters |
The Two Speakers In Full
JBL Boombox 4: $549.95 Amazon Bhphotovideo
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.
Full JBL Boombox 4 review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 41Hz |
| Battery Life | 28 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, LC3, AAC |
| Bluetooth Latency | AAC 144ms, SBC 48ms |
| Built in Microphone | No |
| Digital Aux Input | Yes (USB-C) |
| Dimensions | 20.1" x 10.2" x 8.3" (510 x 260 x 210 mm) |
| Drivers | 2x 123mm woofers + 2x 20mm tweeters with passive radiators |
| EQ | No |
| FM Tuner | No |
| IP Rating | IP68 |
| Max Volume | 115dB |
| MicroSD Playback | No |
| Microphone Input | No |
| Output Power | 210W AC / 200W battery |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C, up to 30W) |
| Power Input | AC Power cord |
| Removable Battery | Yes |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 13.2 lbs / 5.98 kg |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- JOY‘s 🎧3D🔈Audio-Show: JBL Boombox 4 vs Boombox 3 - old one sounding better? 🤔
- JOY‘s 🎧3D🔈Audio-Show: JBL Boombox 4 vs Earfun UBoom X - sound test
- JOY‘s 🎧3D🔈Audio-Show: JBL Boombox 4 vs Boombox 3 - any improvement?
- JOY‘s 🎧3D🔈Audio-Show: JBL Boombox 4 vs Partybox Encore 2 - outdoor loudness & basstest
- JOY‘s 🎧3D🔈Audio-Show: JBL Boombox 4 - finally a real BOOMbox from JBL 👏
- Alan Ross Reviews: JBL Boombox 4 HUMILIATES Brane X?! Ultimate Bass Battle!
- Alan Ross Reviews: JBL Boombox 4 Compared to Boombox 3 & 3 WiFi – Worth the Upgrade?
- Alan Ross Reviews: JBL Boombox 4 distortion fest bonanza! how bad can it be lol 🤣
- Jagist reviews: Jbl Boombox 4 Vs Zealot Ze21!!!
- Techder Audios: JBL Boombox 4 VS Zealot ZE21 BATTLE OF THE BOOMBOXES!
- Dominik Reviews: Zealot S89 vs JBL Boombox 4 - JBL Alternative? Sound Test
- Jagist reviews: Jbl Boombox 4 Vs Zealot S89!!!
- Jagist reviews: Jbl Boombox 4 Vs Zealot S95!!!
- Reddit Search for JBL Boombox 4 Review
- Head-to-Head Comparisons
Harman Kardon Onyx Studio 5: $499.99 Amazon
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.
Full Harman Kardon Onyx Studio 5 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Battery Life | 8 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 11.3" x 11.3" (285.8 x 285.8 mm) |
| Drivers | 2x 75mm woofers + 2x 20mm tweeters |
| EQ | No |
| IP Rating | IPX7 |
| Output Power | 50W |
| Party Mode | Yes (Wireless Dual Sound) |
| Power Bank | No |
| Power Input | DC Barrel Connector (19V/2.1A) |
| Stereo | Partially (1 woofer) |
| TWS | Yes (see https://www.reddit.com/r/Bluetooth_Speakers/comments/w339x5/how_to_harman_kardon_onyx_studio_5_6_dual_sound/) |
| USB Playback | No |
| Weight | 6.6 lbs / 3 kg |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons


