Short answer: the Zealot PT21. It ranks #12 of 53 party speakers by sound quality, rated 4.1/5, at $225.86; the Sony SRS-XV500 ranks #16, rated 4.0/5, and costs $315.99, so there is not much of a tradeoff to weigh.
The Zealot PT21 is the longer-running choice. A lighter party speaker with surprisingly deep bass for the money, a long battery, and a wireless mic for karaoke. It is rated for 60 hours of battery against 25 for the Sony SRS-XV500. Watch for: Unlike some other Zealot models, app-based EQ customization doesn’t appear to be fully supported yet, and IPX5 means it can handle splashes but not submersion.
What the Sony SRS-XV500 does well: A slightly warm party speaker with plenty of bass punch that gets very loud outdoors, plus karaoke inputs and a long battery. Watch for: RTINGS measured poor directivity, so the sound changes noticeably as you move off to the sides.
Buy the Zealot PT21. It is rated higher for sound quality than the Sony SRS-XV500 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Want more options? Browse the full Portable Bluetooth rankings.
Prices on this page were last checked November 11, 2026 at 3:26 AM 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 | Sony SRS-XV500 | |
|---|---|---|
| Price | $225.86 | $315.99 |
| Ranked | #12 of 53 in Party Size Portable Bluetooth Speakers | #16 of 53 in Party Size Portable Bluetooth Speakers |
| App | No | - |
| Aux Input | Yes | Yes |
| Battery Capacity | 48000mAh (12x4000mAh) | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.2 |
| Dimensions | 21.1” x 8.6” x 11.9” (535 x 219 x 303 mm) | 22.2”H x 10.6”W x 11.6”D (564 x 269 x 294 mm) |
| Drivers | 2x 166mm woofers + tweeters + midrange drivers | 2x 140mm woofers + 2x 60mm tweeters |
| EQ | Yes (Bass, Voice, Standard modes) | Yes |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX5 | IPX4 |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes (two 6.3mm inputs) |
| MicroSD Playback | Yes | - |
| Amplifier Power | 200W | 55W RMS |
| Party Mode | Yes (PartyAdd up to 100 speakers) | - |
| Power Bank | Yes (USB-A) | - |
| Power Input | Type-C | - |
| Stereo | Yes | - |
| Omnidirectional | No | - |
| TWS | Yes | Yes |
| USB Playback | Yes | - |
| Weight | 20.7 lbs (9.4 kg) | 24.7 lbs (11.2 kg) |
| Digital Aux Input | No | - |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | - |
| Lights | Yes | Yes |
| Battery Life | 60 hours (Manufacturer specified) | 25 hours (Manufacturer specified) |
| Guitar Input | - | Yes |
| Strap | - | No |
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