Short answer: the Zealot ZE21. It ranks #18 of 98 boombox speakers by sound quality, rated 4.0/5, at $247.41. The Zealot ZE01 ranks #36, rated 3.7/5, at $159.90, $87.51 cheaper, not enough of a saving to outweigh the sound-quality gap.
The ZE21 goes much deeper in the bass. Its 130W subwoofer reaches about 36Hz before falling 10dB, and owners find real output in the 40 to 50Hz range. It links with other Zealots through PartyAdd. Its tuning has a dip from 60 to 110Hz and loud lower mids from 250 to 600Hz, which can make rock and pop sound hollow or boxy, and its sound modes do not fully fix it.
The ZE01 is the lighter speaker with a simpler balance. At 13.2 lbs (6 kg) it weighs about 6.6 lbs (3 kg) less than the ZE21, and its bass reaches about 45Hz before falling 10dB. Both claim 40 hours of battery, are rated IPX6 and charge over USB-C. Its top end is a little rolled off and its clarity trails better-tuned speakers, and it has no party mode.
Buy the Zealot ZE21. It is rated higher for sound quality, and saving $87.51 with the Zealot ZE01 does not make up for the sound-quality gap.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Zealot ZE21 | Zealot ZE01 | |
|---|---|---|
| Price | $247.41 | $159.90 |
| Ranked | #18 of 98 in Boombox Size Portable Bluetooth Speakers | #36 of 98 in Boombox Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 36Hz | 45Hz |
| Battery Life | 40 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| EQ | Yes (multiple modes) | Yes (multiple modes) |
| IP Rating | IPX6 | IPX6 |
| MicroSD Playback | Yes | Yes |
| Party Mode | Yes (PartyAdd up to 100 speakers) | No |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 20.4 lbs (9.27 kg) | 13.2 lbs (6.0 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Power Bank | Yes (USB-A + USB-C) | Yes (USB-A + USB-C) |
| USB Playback | Yes | Yes |
| Built-in Microphone | No | No |
| Amplifier Power | 250W | 120W RMS / 150W peak |
| Dimensions | 16.7” x 10.3” x 14.3” (424 x 262 x 363 mm) | 13.1” x 11.2” x 8.1” (332 x 284 x 207 mm) |
| Drivers | 130W subwoofer + 2x 50mm woofers + passive radiators | Dual 120mm speakers + dual 42mm speakers |
| Maximum SPL | 116dB (Manufacturer specified) | - |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.3 | 5.4 |
Related Speaker Comparisons
More worthwhile head-to-heads for Zealot ZE21:
- Tribit Stormbox Blast vs Zealot ZE21
- Harman Kardon Go + Play 3 vs Zealot ZE21
- JBL Partybox Encore 2 vs Zealot ZE21
- JBL PartyBox On-The-Go 2 Plus vs Zealot ZE21
- JBL Partybox Encore Essential 2 vs Zealot ZE21
Prices on this page were last checked October 12, 2026 at 4:13 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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The Two Speakers In Full
Zealot ZE21: $247.41 Amazon $247.41 AliExpress $187.15 eBay
Pros: The ZE21’s main attraction is unusually deep bass for a battery boombox: owner testing finds real output in the 40-50Hz region and audibility down toward the low 30s. Its TWS button can form a stereo pair with another compatible Zealot, and its large, rugged chassis gives it credible party-speaker scale. Measured bass extension of 36Hz (-10dB).
Cons: That deep-bass emphasis comes with a pronounced 60-110Hz kick-bass dip and over-loud 250-600Hz lower mids, which can make rock and pop sound hollow or boxy. The supplied sound modes do not fully correct the tuning; the most positive independent report required source-side parametric EQ. Treble is also soft and clarity trails better-tuned rivals.
Full Zealot ZE21 review and specifications →
| Released | Dec 2024 (1 year ago) |
|---|---|
| Amplifier Power | 250W |
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 36Hz |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 16.7” x 10.3” x 14.3” (424 x 262 x 363 mm) |
| Drivers | 130W subwoofer + 2x 50mm woofers + passive radiators |
| EQ | Yes (multiple modes) |
| IP Rating | IPX6 |
| Maximum SPL | 116dB (Manufacturer specified) |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | Yes (PartyAdd up to 100 speakers) |
| Power Bank | Yes (USB-A + USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 20.4 lbs (9.27 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Techder Audios: JBL Boombox 4 VS Zealot ZE21 BATTLE OF THE BOOMBOXES! More from techderaudios →
- Jay’s Straight Up Reviews & More: Zealot ZE21 vs JBL Boombox 3 Tailgater Special @20ft. The Budget Beast Against the OG Boombox More from JaysStraightUpReviews →
- Jagist reviews: Jbl Boombox 4 Vs Zealot Ze21!!! More from Jagistreviews →
- Jagist reviews: Zealot Ze21 Vs Tribit Stormbox Blast 2!!!
- Jagist reviews: Yeahbox Sonic Boom Ultra Vs Zealot Ze21!!! Battle Of The Deep Bass 🥳🥳🥳
- Jagist reviews: Hopestar A90 Vs Zealot Ze21!!! Deep Bass Vs Powerful Bass!!!
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- Jagist reviews: Zealot PT21 Vs Zealot Ze21!!! 🥰😍🥰
- Jagist reviews: Zealot Ze41 Vs Zealot Ze21!!! Battle Of The Bass Brothers!!! 👀👀👀
- J_Strat Battles: Zealot ZE51 VS ZE21
- J_Strat Battles: Zealot ZE51 vs ZE21 bass boost/vocal eq battle 💪🏻😎
- Head-to-Head Comparisons
Zealot ZE01: $159.90 Amazon $159.90 AliExpress $126.02 eBay
Pros: Appears to be the same internals as the Zealot S95. Measured bass extension of 45Hz (-10dB).
Cons: A little rolled off up top and not that balanced through the rest of the range. Clarity isn’t as good as better speakers.
Full Zealot ZE01 review and specifications →
| Released | Jan 2025 (1 year ago) |
|---|---|
| Amplifier Power | 120W RMS / 150W peak |
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 45Hz |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 13.1” x 11.2” x 8.1” (332 x 284 x 207 mm) |
| Drivers | Dual 120mm speakers + dual 42mm speakers |
| EQ | Yes (multiple modes) |
| IP Rating | IPX6 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A + USB-C) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 13.2 lbs (6.0 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Techder Audios: ZEALOT S89 VS ZEALOT ZE01 EXTREME POWERFULL VS COMPACTER BASS PERFORMANCE! More from techderaudios →
- Techder Audios: Zealot ZE01 VS Tronsmart Bang Max SOLID VOCALS VS DEEPER BASS
- Techder Audios: Zealot ZE01 VS Xdobo BMTL Wow Max DEEPER BASS VS LOUDER BASS?!
- YARNZO Tech: Zealot ZE01 Vs Zealot S167 which one will win this sound test 🔊🔥 More from YARNZO Tech →
- J_Strat Battles: ZEALOT ZE01 VS ZEALOT PT11 😲😲
- Head-to-Head Comparisons