Short answer: the Zealot ZE41 for bass, play time and volume, the EarFun Uboom X for a smaller footprint. The ZE41 is the absolute best value in the boombox class for bass performance, play time and max volume, but it is the heaviest and biggest boombox speaker around. The Oluv-tuned Uboom X costs $159.99 against $219.95 and only needs its out-of-the-box 0.33 firmware and EQ replaced.
Buy the Zealot ZE41 if you want one new; the EarFun Uboom X is discontinued, so only look for it used.
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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| EarFun Uboom X | Zealot ZE41 | |
|---|---|---|
| Price | $159.99 Discontinued | $219.95 |
| Ranked | #1 of 113 in Boombox Size Portable Bluetooth Speakers | #17 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (Earfun Audio app) | Yes |
| Aux Input | Yes | Yes |
| Aux Latency | 16ms | - |
| Bass Extension (-10dB) | ~38Hz | - |
| Battery Life | 30 hours (Manufacturer specified) | 4 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | AAC, SBC | SBC (inferred; additional codecs unverified) |
| Built-in Microphone | Yes | - |
| EQ | Yes (App EQ) | Yes (Vocal, Bass Boost, Normal modes) |
| IP Rating | IP67 | IPX5 |
| Bluetooth Latency | SBC Video mode 48ms, AAC Video mode 128ms, SBC 112ms, AAC 176ms | - |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) | - |
| Party Mode | Yes (Party Connect mode, up to 50 speakers) | Yes (PartyAdd up to 100 speakers) |
| Power Bank | Yes (USB-C) | Yes (USB-A + USB-C) |
| Power Input | USB-C | Type-C |
| TWS | Yes | Yes |
| Weight | 9 lbs (4.1 kg) | 25.3 lbs (11.48 kg) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| USB Playback | No | Yes |
| FM Tuner | No | - |
| Bluetooth Version | 5.3 | 5.3 |
| Amplifier Power | 80W | 300W |
| Dimensions | 15.7” x 5.9” x 8.5” (400 x 150 x 215 mm) | 22.1” x 9.4” x 13” (562 x 238 x 331 mm) |
| Drivers | 2x 102mm (4”) woofers + 2x 20mm tweeters | 191x130mm 140W subwoofer + 2x 93mm 60W midrange drivers + 2x 42mm 20W tweeters |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Strap | Yes (detachable shoulder strap) | No |
| Battery Capacity | - | 48000mAh (12x4000mAh) |
| Frequency Response | - | 20Hz - 20kHz (Manufacturer specified) |
| Microphone Input | - | Yes (Karaoke mode) |
| MicroSD Playback | - | Yes |
Related Speaker Comparisons
How EarFun Uboom X compares with other leading options: