Short answer: the Zealot ZE51. It ranks #16 of 112 boombox speakers by sound quality, rated 4.1/5, at $235.33; the B&O Beolit 20 ranks #48, rated 3.4/5, and costs $749, so there is not much of a tradeoff to weigh.
The Zealot ZE51 is the better-sounding choice. A big stereo boombox with clean, wide sound and low distortion at high volume for outdoor parties. It plays in stereo from a single unit, unlike the B&O Beolit 20. The catch: The Zealot ZE41 still wins on raw bass depth and price.
The B&O Beolit 20 is the longer-running, lighter option. A premium designer portable with 360 degree sound and a top that doubles as a wireless phone charger. It is rated for 8 hours of battery against 4 for the Zealot ZE51. At 6 lbs (2.7 kg) it weighs much less than the Zealot ZE51 at 26 lbs (11.81 kg).
Buy the Zealot ZE51. It is rated higher for sound quality than the B&O Beolit 20 and costs less, so only choose the other one for a particular feature it does better.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A big stereo boombox with clean, wide sound and low distortion at high volume for outdoor parties.
A premium designer portable with 360 degree sound and a top that doubles as a wireless phone charger.
Prices on this page were last checked October 31, 2026 at 7:11 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
| Zealot ZE51 | B&O Beolit 20 | |
|---|---|---|
| Price | $235.33 after coupon | $749.00 |
| Ranked | #16 of 112 in Boombox Size Portable Bluetooth Speakers | #48 of 112 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | Yes (Bang & Olufsen app) |
| Aux Input | Yes | Yes |
| Battery Capacity | 48000mAh (12x4000mAh) | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 4.2 |
| Dimensions | 22.1” x 9.4” x 13” (562 x 238 x 331 mm) | 5.3” x 9.1” x 7.4” (135 x 230 x 189 mm) |
| EQ | Yes (Hi-Res, 3D Surround, Extra Bass, Vocal and other sound modes) | Yes (App EQ) |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX5 | IPX4 |
| Microphone Input | Yes (Karaoke mode) | - |
| MicroSD Playback | Yes | - |
| Amplifier Power | 250W | 240W peak |
| Power Bank | Yes (USB-A + USB-C) | Yes (USB-C) |
| Power Input | Type-C | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | Yes |
| TWS | Yes | Yes |
| USB Playback | Yes | No |
| Weight | 26 lbs (11.81 kg) | 6 lbs (2.7 kg) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Drivers | 1x 133mm + 2x 93mm + 2x 45mm | 2x 30mm tweeters + 2x 40mm mid-range + 1x 60mm woofer + dual passive radiators |
| Battery Life | 4 hours (Manufacturer specified) | 8 hours (Manufacturer specified) |
| Strap | Yes (strap) | Yes (built-in strap) |
| Bass Extension (-10dB) | - | 45Hz |
| Party Mode | - | No |
| Built-in Microphone | - | Yes |
| Maximum SPL | - | 93dB (Manufacturer specified) |
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