Short answer: it depends on whether you value output or refinement. The Zealot ZE41 is the absolute best value for bass performance, play time and maximum volume in the boombox class, but it is the heaviest and biggest boombox speaker around. The Harman Kardon Go + Play 3 ranks #3 of 113 and is warm with boosted bass, though only a little over half as loud as the higher-rated boomboxes.
Buy the Harman Kardon Go + Play 3. It is rated higher for sound quality, and saving $165.05 with the Zealot ZE41 does not make up for the sound-quality gap.
Water resistance is not close: the Zealot ZE41 is rated at IPX5 (water jets), well ahead of the Harman Kardon Go + Play 3 at no water resistance.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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Specifications Side By Side
| Harman Kardon Go + Play 3 | Zealot ZE41 | |
|---|---|---|
| Price | $385 | $219.95 |
| Ranked | #3 of 113 in Boombox Size Portable Bluetooth Speakers | #17 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (Harman Kardon One app) | Yes |
| Aux Latency | 112ms | - |
| Bass Extension (-10dB) | 35Hz | - |
| Battery Life | 8 hours (Manufacturer specified) | 4 hours (Manufacturer specified) |
| Built-in Microphone | Yes | - |
| EQ | Yes (App EQ) | Yes (Vocal, Bass Boost, Normal modes) |
| IP Rating | None | IPX5 |
| Bluetooth Latency | 120ms | - |
| Maximum SPL | 103dB (measured by Alan Ross Reviews) | - |
| Power Input | AC Power brick | Type-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 10.4 lbs (4.7 kg) | 25.3 lbs (11.48 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC, AAC | SBC (inferred; additional codecs unverified) |
| Power Bank | Yes | Yes (USB-A + USB-C) |
| Party Mode | No | Yes (PartyAdd up to 100 speakers) |
| USB Playback | No | Yes |
| Bluetooth Version | 5.2 | 5.3 |
| Amplifier Power | 160W RMS | 300W |
| Dimensions | 17.3” x 9.4” x 7.6” (439 x 240 x 192 mm) | 22.1” x 9.4” x 13” (562 x 238 x 331 mm) |
| Aux Input | Yes | Yes |
| Drivers | 1x 130mm (5”) subwoofer + 2x 70mm midrange drivers + 2x 20mm tweeters | 191x130mm 140W subwoofer + 2x 93mm 60W midrange drivers + 2x 42mm 20W tweeters |
| Digital Aux Input | No | No |
| Strap | No | No |
| Battery Capacity | - | 48000mAh (12x4000mAh) |
| Frequency Response | - | 20Hz - 20kHz (Manufacturer specified) |
| Microphone Input | - | Yes (Karaoke mode) |
| MicroSD Playback | - | Yes |
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