Short answer: the Zealot ZE21. It ranks #18 of 98 boombox speakers by sound quality, rated 4.0/5, at $247.41. The Soundcore Boom 2 Plus ranks #37, rated 3.6/5, at $179.99, $67.42 cheaper, which does not close the gap in sound quality.
The Zealot ZE21 is the better-sounding, longer-running option. 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. It is rated for 40 hours of battery against 20 for the Soundcore Boom 2 Plus. The catch: 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 Soundcore Boom 2 Plus is the lighter option. Quite a bit lighter than most of the other boombox size speakers. At 8.4 lbs (3.8 kg) it weighs much less than the Zealot ZE21 at 20.4 lbs (9.27 kg). It supports AAC Bluetooth, which the Zealot ZE21 lacks. The tradeoff: Warm tuning meaning a rolled off treble and some upper bass boost.
Buy the Zealot ZE21. It is rated higher for sound quality, and the $67.42 saving on the Soundcore Boom 2 Plus is not enough to make up the difference.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Zealot ZE21 | Soundcore Boom 2 Plus | |
|---|---|---|
| Price | $247.41 | $179.99 |
| Ranked | #18 of 98 in Boombox Size Portable Bluetooth Speakers | #37 of 98 in Boombox Size Portable Bluetooth Speakers |
| App | No | Yes |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 36Hz | 39Hz |
| Battery Life | 40 hours (Manufacturer specified) | 20 hours (Manufacturer specified) |
| EQ | Yes (multiple modes) | Yes (Pro EQ + presets) |
| IP Rating | IPX6 | IPX7 |
| MicroSD Playback | Yes | No |
| Party Mode | Yes (PartyAdd up to 100 speakers) | Yes (PartyCast 2.0) |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 20.4 lbs (9.27 kg) | 8.4 lbs (3.8 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, AAC |
| Power Bank | Yes (USB-A + USB-C) | Yes (USB-C, 5V/2A) |
| USB Playback | Yes | No |
| Built-in Microphone | No | Yes |
| Amplifier Power | 250W | 140W |
| Dimensions | 16.7” x 10.3” x 14.3” (424 x 262 x 363 mm) | 17.3” x 9.1” x 5.9” (440 x 230 x 150 mm) |
| Drivers | 130W subwoofer + 2x 50mm woofers + passive radiators | 2x 114mm (4.5”) woofers + 2x 19mm (0.75”) tweeters |
| Maximum SPL | 116dB (Manufacturer specified) | 111dB (measured by Alan Ross Reviews) |
| Digital Aux Input | No | No |
| Bluetooth Version | 5.3 | 5.3 |
| Lights | - | Yes |
| Strap | - | Yes (detachable strap) |
Related Speaker Comparisons
More top alternatives to 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
Soundcore Boom 2 Plus: $179.99 Amazon $179.99 eBay
Older model: the Soundcore Motion Boom+ (ranked lower, rated 2.9/5). See every Soundcore Boom generation.
Same family: the Soundcore Boom 2 (smaller model, rated 4.5/5).
Pros: Quite a bit lighter than most of the other boombox size speakers. This speaker will likely move up as we get a good EQ tune that makes it a lot more neutral. Measured bass extension of 39Hz (-10dB).
Cons: Warm tuning meaning a rolled off treble and some upper bass boost. Reasonably deep bass, but not as good as the top ranked.
Full Soundcore Boom 2 Plus review and specifications →
| Released | May 2024 (2 years ago) |
|---|---|
| Amplifier Power | 140W |
| App | Yes |
| Aux Input | Yes |
| Bass Extension (-10dB) | 39Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 17.3” x 9.1” x 5.9” (440 x 230 x 150 mm) |
| Drivers | 2x 114mm (4.5”) woofers + 2x 19mm (0.75”) tweeters |
| EQ | Yes (Pro EQ + presets) |
| IP Rating | IPX7 |
| Lights | Yes |
| Maximum SPL | 111dB (measured by Alan Ross Reviews) |
| MicroSD Playback | No |
| Omnidirectional | No |
| Party Mode | Yes (PartyCast 2.0) |
| Power Bank | Yes (USB-C, 5V/2A) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable strap) |
| TWS | Yes |
| USB Playback | No |
| Weight | 8.4 lbs (3.8 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: This sounds totally different now! Soundcore Boom Plus 2 firmware 03.10 More from alanrossreviews →
- Alan Ross Reviews: Earfun Uboom X Mini Boombox bluetooth speaker, a PROPER review 😝
- Alan Ross Reviews: Soundcore Boom 2 Plus Review - worst boombox speaker under $400?
- Techder Audios: Soundcore Boom 2 Plus VS Teufel Rockster Cross "TO MUCH BASS VS CLARITY QUALITY!" More from techderaudios →
- Jay’s Straight Up Reviews & More: Soundcore Boom 2 Plus VS Tribit Stormbox Blast 🛜 Boombox Basement Battle 📊Custom EQ 🔥Who You Got? More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: NEW RELEASE! Soundcore Boom 2 Plus vs Motion Boom Plus🤯Stock EQ, Bass^ Enabled🤜🤛 A Family Feud😆
- Jagist reviews: Zealot S95 Vs Soundcore Boom 2 Plus!!! More from Jagistreviews →
- Picky Audio: SO CLOSE! Soundcore Boom 2 Plus vs JBL Boombox 3 More from pickyaudio →
- Picky Audio: Extended Sound Test (Soundcore Boom 2 Plus vs JBL Boombox 3)
- EL JEFE REVIEWS: Soundcore Boom 2 Plus 💥 BIGGER & BADDER! More from ELJefeReviews →
- GYMCADDY: Soundcore Boom 2 Plus Showcase - Lots Of Bass In A Small Package More from GYMCADDY →
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