Short answer: the Zealot PT21. It ranks #15 of 50 party speakers by sound quality at $216.73; the Ultimate Ears Hyperboom ranks #31 and costs $449.99, so there is not much of a tradeoff to weigh.
The case for the Zealot PT21: Dual 166mm woofers and 200W output in a lighter, more compact body than the ZE41, with a bundled wireless microphone and echo effect built in for karaoke. The tradeoff: 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 Ultimate Ears Hyperboom gets right: Strong audio performance with 2x 4.5” woofers, 2x 1” tweeters, 2x passive radiators. The catch: Very expensive for what it does, a bit dull and muddy sound.
Buy the Zealot PT21. It ranks higher for sound quality than the Ultimate Ears Hyperboom and costs less, so there is no real case for the other one.
If water resistance matters to you, the Zealot PT21 at IPX5 (water jets) holds up far better than the Ultimate Ears Hyperboom at no water resistance.
Specifications Side By Side
| Zealot PT21 | Ultimate Ears Hyperboom | |
|---|---|---|
| Price | $216.73 | $449.99 |
| Ranked | #15 of 50 in Party Size Portable Bluetooth Speakers | #31 of 50 in Party Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | Yes | Yes |
| Battery Capacity | 48000mAh (12x4000mAh) | - |
| Bluetooth Version | 5.3 | 5.0 |
| Dimensions | 21.1" x 8.6" x 11.9" (535 x 219 x 303 mm) | 7.5" x 7.5" x 14.3" (190 x 190 x 364 mm) |
| Drivers | 2x 166mm woofers + tweeters + midrange drivers | 2x 5.66" woofers, 2x 0.98" tweeters, passive radiators |
| EQ | Yes (Bass, Voice, Standard modes) | No |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX5 | None |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| MicroSD Playback | Yes | - |
| Output Power | 200W | - |
| Party Mode | Yes (PartyAdd up to 100 speakers) | Yes (PartyUp up to 50 speakers) |
| Power Bank | Yes (USB-A) | No |
| Power Input | Type-C | AC Power brick |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| USB Playback | Yes | No |
| Weight | 20.7 lbs / 9.4 kg | 13 lbs / 5.9 kg |
| Digital Aux Input | No | No |
| Bass Extension (-10dB) | - | 55Hz |
| Battery Life | - | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | - | SBC |
| Charging Time | - | 2.6 hours |
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The Two Speakers In Full
Zealot PT21: $216.73 Aliexpress
Pros: Dual 166mm woofers and 200W output in a lighter, more compact body than the ZE41, with a bundled wireless microphone and echo effect built in for karaoke. Quite deep bass for the price, even deeper than the JBL Boombox 4 in direct comparisons.
Cons: 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.
Full Zealot PT21 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Battery Capacity | 48000mAh (12x4000mAh) |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 21.1" x 8.6" x 11.9" (535 x 219 x 303 mm) |
| Drivers | 2x 166mm woofers + tweeters + midrange drivers |
| EQ | Yes (Bass, Voice, Standard modes) |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX5 |
| MicroSD Playback | Yes |
| Microphone Input | Yes (Karaoke mode with echo effect) |
| Omnidirectional | No |
| Output Power | 200W |
| Party Mode | Yes (PartyAdd up to 100 speakers) |
| Power Bank | Yes (USB-A) |
| Power Input | Type-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 20.7 lbs / 9.4 kg |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Jagist reviews: Zealot PT21 Vs Jbl Boombox 4!!! 😁😁😁
- Techder Audios: Zealot PT21 - Soundtest “BUDGET PARTYBOX WITH BASS ?”
- Jagist reviews: Zealot PT21 Vs Zealot Ze21!!! 🥰😍🥰
- Jagist reviews: Zealot PT21 Unboxing And Review!!! 😈😈😈
- Techder Audios: Zealot PT21 VS Yeahbox Sonic Boom Ultra “BASS VS QUALITY BASS!?”
- Jagist reviews: Zealot Ze41 Vs Zealot PT21!!! BATTLE OF THE BROTHERS!!! 😝😝😝
- Jagist reviews: Zealot PT21 Vs Yeahbox Sonic Boom Max3!!! 💥💥💥
- Jagist reviews: Zealot PT21 Vs Zealot S89!!! 😈😈😈
- Jagist reviews: Zealot PT21 Vs LG xboom Stage301!!! 🫣🫣🫣
- Jagist reviews: Zealot PT21 Slim Back Rattle Fix!!!😇😇😇
- Reddit Search for Zealot PT21 Review
- Head-to-Head Comparisons
Ultimate Ears Hyperboom: $449.99 Amazon
Pros: Strong audio performance with 2x 4.5” woofers, 2x 1” tweeters, 2x passive radiators. Up to 24 hours battery at 50% volume (3 hours at max). Adaptive bass compensation for wall-reflective environments. Dual Bluetooth pairing, aux and optical inputs, USB-out for device charging. IPX4 splash-proof. Sliding rubber handle and compact square design.
Cons: Very expensive for what it does, a bit dull and muddy sound. Not as loud as others in the class. Bass not as deep as a Partybox 100. External power brick for charging.
Full Ultimate Ears Hyperboom review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 55Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Charging Time | 2.6 hours |
| Digital Aux Input | No |
| Dimensions | 7.5" x 7.5" x 14.3" (190 x 190 x 364 mm) |
| Drivers | 2x 5.66" woofers, 2x 0.98" tweeters, passive radiators |
| EQ | No |
| IP Rating | None |
| Omnidirectional | No |
| Party Mode | Yes (PartyUp up to 50 speakers) |
| Power Bank | No |
| Power Input | AC Power brick |
| Stereo | Yes |
| TWS | No |
| USB Playback | No |
| Weight | 13 lbs / 5.9 kg |
As an eBay Partner, we may be compensated if you make a purchase.
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- Reviews, Comparisons and Sound Samples
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