Short answer: the JBL Boombox 4. It ranks #20 of 89 boombox speakers by sound quality, rated 4.0/5, at $549.95. The Pioneer PBM5 ranks #89, rated 2.0/5, at $149, $400.95 cheaper, which does not close the gap in sound quality.
The case for the JBL Boombox 4: Pretty insane output capability for the size. Watch for: Pretty overpriced for the category.
Why pick the Pioneer PBM5: Loud for its size: Williston Audio Labs measured about 105 dB at 2 meters, louder than the Turtlebox Original Gen3 and Kicker Bullfrog BF400 in the same test. The catch: Williston Audio Labs was not impressed with its sound: there is very little bass below 100Hz, and the amplifier’s output has a big dip from 1.6kHz to 10kHz that leaves the upper mids and treble recessed.
Buy the JBL Boombox 4. It is rated higher for sound quality, and the $400.95 saving on the Pioneer PBM5 is not enough to make up the difference.
If battery life is a priority, the JBL Boombox 4 is rated for 28 hours versus 13 hours for the Pioneer PBM5.
If water resistance matters to you, the JBL Boombox 4 at IP68 (extended submersion) holds up far better than the Pioneer PBM5 at IPX5 (water jets).
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| JBL Boombox 4 | Pioneer PBM5 | |
|---|---|---|
| Price | $549.95 | $149.00 |
| Ranked | #20 of 89 in Boombox Size Portable Bluetooth Speakers | #89 of 89 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 41Hz | - |
| Battery Life | 28 hours (Manufacturer specified) | 13 hours at 60% volume (Manufacturer specified) |
| EQ | Yes (7 band) | Yes (presets + user EQ) |
| IP Rating | IP68 | IPX5 |
| Bluetooth Latency | AAC 144ms, SBC 48ms | - |
| Maximum SPL | 115dB (measured by Alan Ross Reviews) | 105dB at 2m (measured by Williston Audio Labs) |
| Party Mode | Yes (Auracast) | Yes (Auracast) |
| Power Input | AC Power cord | USB-C or AC Power cord |
| Removable Battery | Yes | - |
| Stereo | Yes | - |
| Omnidirectional | No | No |
| Weight | 13.2 lbs (5.98 kg) | 14.1 lbs (6.4 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, LC3, AAC | - |
| Bluetooth Version | 5.4 | 5.4 |
| Built-in Microphone | No | - |
| Power Bank | Yes (USB-C, up to 30W) | - |
| TWS | Yes | Yes |
| Digital Aux Input | Yes (USB-C) | - |
| USB Playback | No | Yes (MP3 only) |
| FM Tuner | No | - |
| Microphone Input | No | Yes (2 inputs) |
| MicroSD Playback | No | - |
| Amplifier Power | 210W AC / 200W battery | 300W peak (Manufacturer specified), about 90W measured |
| Dimensions | 20.1” x 10.2” x 8.3” (510 x 260 x 210 mm) | 8.9”H x 17.4”W x 8.1”D (226 x 442 x 207 mm) |
| Drivers | 2x 123mm woofers + 2x 20mm tweeters with passive radiators | 2x 133mm (5.25”) woofers + 2x 51mm (2”) tweeters |
| Strap | No | Yes (detachable shoulder strap) |
| Guitar Input | - | Yes |
| Lights | - | Yes |
Related Speaker Comparisons
More top alternatives to JBL Boombox 4:
- Earfun Uboom X vs JBL Boombox 4
- JBL Boombox 4 vs Tribit Stormbox Blast
- Harman Kardon Go + Play 3 vs JBL Boombox 4
- JBL Boombox 4 vs JBL Partybox Encore 2
- JBL PartyBox On-The-Go 2 Plus vs JBL Boombox 4
Prices on this page were last checked September 30, 2026 at 2:57 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
JBL Boombox 4: $549.95 Amazon B&H Photo Video eBay
Older models: the JBL Boombox 3 (ranked lower, rated 3.8/5), the JBL Boombox 2 (ranked lower, rated 3.5/5) and the JBL Boombox (ranked lower, rated 2.9/5).
Pros: Pretty insane output capability for the size. IP68 protection and Auracast pairing with other current JBL speakers. Measured bass extension of 41Hz (-10dB).
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 →
| Amplifier Power | 210W AC / 200W battery |
|---|---|
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 41Hz |
| Battery Life | 28 hours (Manufacturer specified) |
| Bluetooth | Yes |
| 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 |
| Maximum SPL | 115dB (measured by Alan Ross Reviews) |
| MicroSD Playback | No |
| Microphone Input | No |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C, up to 30W) |
| Power Input | AC Power cord |
| Removable Battery | Yes |
| Stereo | Yes |
| Strap | No |
| 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!!!
- M1MTechChannel: Welche JBL Partybox ist die BESTE ? Alle Partyboxen im Vergleich | 2026 More from M1MTechChannel →
- M1MTechChannel: JBL BOOMBOX 4 - Einfach komplett GEISTESKRANK
- Head-to-Head Comparisons
Pioneer PBM5: $149.00 Sam’s Club eBay
Pros: Loud for its size: Williston Audio Labs measured about 105 dB at 2 meters, louder than the Turtlebox Original Gen3 and Kicker Bullfrog BF400 in the same test. Two 5.25 inch woofers and two 2 inch tweeters with a port tuned to 48Hz, two microphone inputs plus a guitar input with bass, treble and reverb controls for the mics, aux and USB playback, IPX5 splash resistance, RGB lights, a shoulder strap, Bluetooth 5.4 with Auracast, and charging from either USB-C or the included AC cord. A rated 13 hours at 60% volume.
Cons: Williston Audio Labs was not impressed with its sound: there is very little bass below 100Hz, and the amplifier’s output has a big dip from 1.6kHz to 10kHz that leaves the upper mids and treble recessed. None of the EQ presets fixed it, and a 1990 JVC boombox sounded cleaner. The amp measured about 90W in total, not the claimed 300W, and only about 23W per woofer channel on battery. USB playback is MP3 only, there is no audio output and no microphone in the box, and it is sold only at Sam’s Club.
Full Pioneer PBM5 review and specifications →
| Amplifier Power | 300W peak (Manufacturer specified), about 90W measured |
|---|---|
| App | Yes |
| Aux Input | Yes |
| Battery Life | 13 hours at 60% volume (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Version | 5.4 |
| Dimensions | 8.9”H x 17.4”W x 8.1”D (226 x 442 x 207 mm) |
| Drivers | 2x 133mm (5.25”) woofers + 2x 51mm (2”) tweeters |
| EQ | Yes (presets + user EQ) |
| Guitar Input | Yes |
| IP Rating | IPX5 |
| Lights | Yes |
| Maximum SPL | 105dB at 2m (measured by Williston Audio Labs) |
| Microphone Input | Yes (2 inputs) |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Input | USB-C or AC Power cord |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| USB Playback | Yes (MP3 only) |
| Weight | 14.1 lbs (6.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons