Short answer: the ZZA K8 is the value pick; the JBL Boombox 4 avoids its V curve. The K8 is completely insane value for the money, but its frequency response is a very V curve that can be harsh in the treble range. The Boombox 4 has pretty insane output for its size but is pretty overpriced for the category.
Buy the JBL Boombox 4. It is rated higher for sound quality; the ZZA K8 is no longer sold new.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| JBL Boombox 4 | ZZA K8 | |
|---|---|---|
| Price | $549.95 | $40 after clipped coupon, Discontinued |
| Ranked | #20 of 113 in Boombox Size Portable Bluetooth Speakers | #73 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 41Hz | - |
| Battery Life | 28 hours (Manufacturer specified) | ~30 hours (Manufacturer specified) |
| EQ | Yes (7 band) | No |
| IP Rating | IP68 | IPX6 |
| Bluetooth Latency | AAC 144ms, SBC 48ms | - |
| Maximum SPL | 115dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Auracast) | No |
| Power Input | AC Power cord | USB-C |
| Removable Battery | Yes | - |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| Weight | 13.2 lbs (5.98 kg) | 6.8 lbs (3.1 kg) |
| Bluetooth | Yes | Yes |
| 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 | Yes |
| MicroSD Playback | No | - |
| Amplifier Power | 210W AC / 200W battery | - |
| 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 | 8” woofer + tweeters |
| Strap | No | - |
| Outputs | - | Aux |
| Wireless Microphones | - | Yes 2 Included |
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