Short answer: the JBL Partybox 330 on measured sound quality, the Zealot PT21 on price. The JBL Partybox 330 ranks #2 of 53 party speakers, rated 4.6/5, at $629.95. The Zealot PT21 ranks #12, rated 4.1/5, at $225.86, $404.09 cheaper.
On the JBL Partybox 330 side: The top-ranked party speaker here, with a removable battery, handle and wheels, and dual mic/guitar inputs for karaoke and live sets. The tradeoff: it’s very large, sound quality is nearly identical to the cheaper 310 and Stage 320, and JBL’s daisy-chain only works with other JBL speakers.
Buy the Zealot PT21 if the price matters more than sound quality. Buy the JBL Partybox 330 if sound quality matters more than the price.
If battery life is a priority, the Zealot PT21 is rated for 60 hours versus 18 hours for the JBL Partybox 330.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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 | JBL Partybox 330 | |
|---|---|---|
| Price | $225.86 | $629.95 |
| Ranked | #12 of 53 in Party Size Portable Bluetooth Speakers | #2 of 53 in Party Size Portable Bluetooth Speakers |
| App | No | Yes |
| Aux Input | Yes | Yes |
| Battery Capacity | 48000mAh (12x4000mAh) | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 6.0 |
| Dimensions | 21.1” x 8.6” x 11.9” (535 x 219 x 303 mm) | 26.1”H x 13.1”W x 14.8”D (662.5 x 334 x 375 mm) |
| Drivers | 2x 166mm woofers + tweeters + midrange drivers | 2x 6.5” (165mm) woofers + 2x 1” (25mm) PEN dome tweeters |
| EQ | Yes (Bass, Voice, Standard modes) | Yes (Smart EQ mode) |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX5 | IPX4 |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes (Karaoke mode with echo effect) |
| MicroSD Playback | Yes | - |
| Amplifier Power | 200W | 280W |
| Party Mode | Yes (PartyAdd up to 100 speakers) | Yes (Auracast) |
| Power Bank | Yes (USB-A) | Yes (USB-C, 5V/1A) |
| Power Input | Type-C | AC Power cord |
| Stereo | Yes | Partially |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 20.7 lbs (9.4 kg) | 37.7 lbs (17.1 kg) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Lights | Yes | Yes |
| Battery Life | 60 hours (Manufacturer specified) | 18 hours (Manufacturer specified) |
| Charging Time | - | 3 hours |
| Guitar Input | - | Yes |
| Inputs | - | Optical |
| Removable Battery | - | Yes |
| Wheels | - | Yes |
| Strap | - | No |
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