Short answer: the JBL Boombox 4 for better sound quality, the Altec Lansing Rockbox XL 2.0 for the lower price. The JBL Boombox 4 ranks #17 of 73 boombox speakers at $549.95. The Altec Lansing Rockbox XL 2.0 ranks #71 at $160, $389.95 cheaper.
The case for the JBL Boombox 4: Pretty insane output capability for the size, with 7-band EQ for better tuning than the Boombox 3. Set against that: It’s overpriced for the category, sounds worse than the Boombox 3 out of the box, and drops Aux input entirely.
On the Altec Lansing Rockbox XL 2.0 side: IP67 waterproof and floats upright in water. 20 hour battery life. Deep, rich bass with clear sound across spectrum. The tradeoff: Rolled off treble, muddy midrange, not very deep bass.
Buy the JBL Boombox 4 if sound quality matters more than the price. Buy the Altec Lansing Rockbox XL 2.0 if the price matters more than sound quality.
If sound quality matters at all to you, skip the Altec Lansing Rockbox XL 2.0. It ranks near the bottom of the 73 boombox speakers, so look higher up the list instead.
Specifications Side By Side
| JBL Boombox 4 | Altec Lansing Rockbox XL 2.0 | |
|---|---|---|
| Price | $549.95 | $160 |
| Ranked | #17 of 73 in Boombox Size Portable Bluetooth Speakers | #71 of 73 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | Yes (Altec Lansing Just Listen app) |
| Aux Input | No | - |
| Bass Extension (-10dB) | 41Hz | - |
| Battery Life | 28 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| EQ | Yes (7 band) | Yes (App EQ) |
| IP Rating | IP68 | IP67 |
| Bluetooth Latency | AAC 144ms, SBC 48ms | - |
| Max Volume | 115dB | - |
| Party Mode | Yes (Auracast) | Yes (House Party Mode) |
| Power Input | AC Power cord | USB-C |
| Removable Battery | Yes | - |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Weight | 13.2 lbs / 5.98 kg | 12.6 lbs / 5.71 kg |
| Bluetooth Codecs | SBC, LC3, AAC | SBC |
| Bluetooth Version | 5.4 | - |
| Built in Microphone | No | No |
| Power Bank | Yes (USB-C, up to 30W) | Yes (USB-A) |
| TWS | Yes | Yes |
| Digital Aux Input | Yes (USB-C) | No |
| USB Playback | No | No |
| FM Tuner | No | No |
| Microphone Input | No | - |
| MicroSD Playback | No | - |
| Output Power | 210W AC / 200W battery | 120W |
| Dimensions | 20.1" x 10.2" x 8.3" (510 x 260 x 210 mm) | 22.2" x 11.2" x 11.6" (564 x 284 x 295 mm) |
| Drivers | 2x 123mm woofers + 2x 20mm tweeters with passive radiators | 8" woofer + tweeters |
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- Harman Kardon Go + Play 2 vs JBL Boombox 2
- Harman Kardon Go + Play 2 vs Teufel Boomster 2021
- Harman Kardon Go + Play 2 vs Teufel Boomster NG (2017)
- Harman Kardon Onyx Studio 8 vs JBL Boombox 4
- JBL Boombox 4 vs Zealot S95
Prices on this page were last checked August 21, 2026 at 5:30 AM 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
JBL Boombox 4: $549.95 Amazon Bhphotovideo eBay
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 |
| Bluetooth Version | 5.4 |
| 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 | Yes (7 band) |
| FM Tuner | No |
| IP Rating | IP68 |
| Max Volume | 115dB |
| MicroSD Playback | No |
| Microphone Input | No |
| Omnidirectional | 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 |
- Links
- Reviews, Comparisons and Sound Samples
- JOY‘s 🎧3D🔈Audio-Show: JBL Boombox 4 vs Boombox 3 - old one sounding better? 🤔 More from Oluv’Sone →
- 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! More from alanrossreviews →
- 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!!! More from Jagistreviews →
- Techder Audios: JBL Boombox 4 VS Zealot ZE21 BATTLE OF THE BOOMBOXES! More from techderaudios →
- Dominik Reviews: Zealot S89 vs JBL Boombox 4 - JBL Alternative? Sound Test More from Dominik Reviews →
- 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
- JBL Boombox 4 vs Zealot S89
- JBL Boombox 4 vs Harman Kardon Go + Play 2
- JBL Boombox 4 vs Zealot ZE21
- JBL Boombox 4 vs Harman Kardon Onyx Studio 5
- JBL Boombox 4 vs Zealot ZE41
- JBL Boombox 4 vs JBL Boombox 3 Wifi
- JBL Boombox 4 vs JBL Boombox 3
- JBL Boombox 4 vs Harman Kardon Onyx Studio 9
- See all 76 comparisons
Altec Lansing Rockbox XL 2.0: $160 Amazon eBay
Pros: IP67 waterproof and floats upright in water. 20 hour battery life. Deep, rich bass with clear sound across spectrum. LED lights create party atmosphere. House Party feature connects 50+ speakers. Can charge phones.
Cons: Rolled off treble, muddy midrange, not very deep bass
Full Altec Lansing Rockbox XL 2.0 review and specifications →
| App | Yes (Altec Lansing Just Listen app) |
|---|---|
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 22.2" x 11.2" x 11.6" (564 x 284 x 295 mm) |
| Drivers | 8" woofer + tweeters |
| EQ | Yes (App EQ) |
| FM Tuner | No |
| IP Rating | IP67 |
| Omnidirectional | No |
| Output Power | 120W |
| Party Mode | Yes (House Party Mode) |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 12.6 lbs / 5.71 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons