Short answer: the Zealot PT21 for karaoke features, the ZE21 if you want the cheaper boombox. The ZE21 is great value for bass, play time and max volume, though the newer ZE41 now beats it, and it is a little rolled off up top with bloated, muddy bass EQ. The PT21 adds dual 166mm woofers and a wireless mic with echo, costing $225.86 against $187.15.
Buy the Zealot PT21 at $225.86 if you want a party speaker. Buy the Zealot ZE21 at $187.15 if you want a boombox speaker instead.
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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
| Zealot PT21 | Zealot ZE21 | |
|---|---|---|
| Price | $225.86 | $187.15 |
| Ranked | #12 of 53 in Party Size Portable Bluetooth Speakers | #18 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | Yes | Yes |
| Battery Capacity | 48000mAh (12x4000mAh) | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.3 |
| Dimensions | 21.1” x 8.6” x 11.9” (535 x 219 x 303 mm) | 16.7” x 10.3” x 14.3” (424 x 262 x 363 mm) |
| Drivers | 2x 166mm woofers + tweeters + midrange drivers | 130W subwoofer + 2x 50mm woofers + passive radiators |
| EQ | Yes (Bass, Voice, Standard modes) | Yes (multiple modes) |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX5 | IPX6 |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| MicroSD Playback | Yes | Yes |
| Amplifier Power | 200W | 250W |
| Party Mode | Yes (PartyAdd up to 100 speakers) | Yes (PartyAdd up to 100 speakers) |
| Power Bank | Yes (USB-A) | Yes (USB-A + USB-C) |
| Power Input | Type-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 20.7 lbs (9.4 kg) | 20.4 lbs (9.27 kg) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Lights | Yes | - |
| Battery Life | 60 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| Bass Extension (-10dB) | - | 36Hz |
| Built-in Microphone | - | No |
| Maximum SPL | - | 116dB (Manufacturer specified) |
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