Short answer: the Zealot PT21 for karaoke value, the Bose S1 Pro+ for compact placement. The PT21 packs dual 166mm woofers and 200W of output plus a bundled wireless microphone with echo, though its app EQ support is incomplete and IPX5 only handles splashes. The Bose is lighter and easier to place but distorts above two-thirds volume with full-range music, and it costs $699 against $225.86.
Buy the Zealot PT21 at $225.86 for a party speaker, or the Bose S1 Pro+ at $699 for a battery-powered PA speaker instead.
Battery life favors the Zealot PT21: rated for 60 hours against 11 hours for the Bose S1 Pro+.
Water resistance is not close: the Zealot PT21 is rated at IPX5 (water jets), well ahead of the Bose S1 Pro+ at no water resistance.
Still deciding? The full Portable Bluetooth rankings and PA & Live Sound rankings cover every ranked option.
Dual 166mm woofers and 200W output in a lighter, more compact body than the Zealot ZE41, with a bundled wireless microphone and echo effect built in for karaoke.
AliExpress $225.86 eBay
Extremely compact and light with flexible placement options, and very loud for its size.
Amazon $699.00 eBayPrices on this page were last checked October 17, 2026 at 6:04 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 | Bose S1 Pro+ | |
|---|---|---|
| Price | $225.86 | $699.00 |
| Ranked | #12 of 49 in Party Size Portable Bluetooth Speakers | #6 of 16 in Battery-Powered PA Speakers |
| App | No | Yes |
| Aux Input | Yes | Yes |
| Battery Capacity | 48000mAh (12x4000mAh) | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 21.1” x 8.6” x 11.9” (535 x 219 x 303 mm) | 13.1” x 9.4” x 11” (332.7 x 238.8 x 279.4 mm) |
| Drivers | 2x 166mm woofers + tweeters + midrange drivers | 1x 6” (152mm) woofer + 3x 2.25” (57mm) tweeters |
| EQ | Yes (Bass, Voice, Standard modes) | Yes |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX5 | None |
| Microphone Input | Yes (Karaoke mode with echo effect) | Yes |
| MicroSD Playback | Yes | - |
| Amplifier Power | 200W | 150W |
| Party Mode | Yes (PartyAdd up to 100 speakers) | Yes (Bose Party mode) |
| Power Bank | Yes (USB-A) | No |
| Power Input | Type-C | AC Power cord |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | No |
| Weight | 20.7 lbs (9.4 kg) | 14.3 lbs (6.5 kg) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | AAC, SBC |
| Lights | Yes | - |
| Battery Life | 60 hours (Manufacturer specified) | 11 hours (Manufacturer specified) |
| Passive | - | No |
| Bass Extension (-10dB) | - | 55Hz |
| Charging Time | - | 5 hours |
| Inputs | - | 2x XLR/6.3mm combo (mic/line/instrument), 6.3mm line, 3.5mm stereo, Bluetooth |
| XLR Input | - | Yes |
| Maximum SPL | - | 109dB |
| Configuration | - | Battery-powered 2-way active PA |
| Cabinet Material | - | Polypropylene |
| Rigging | - | 35mm pole mount; multi-position cabinet |
| DSP | - | 3-channel mixer with EQ, reverb and Auto EQ |
| Guitar Input | - | Yes |
| Bass Extension (-3dB) | - | 62Hz |
| Coverage | - | 120° H x 50° V |
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