Short answer: the Zealot ZE21 if sound quality matters most, the W-King H330 if price matters most. The Zealot ZE21 ranks #18 of 89 boombox speakers, rated 4.0/5, at $247.41. The W-King H330 ranks #31, rated 3.8/5, at $119.99, $127.42 cheaper.
What the Zealot ZE21 does well: 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. The tradeoff: 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 case for the W-King H330: In Jagist’s side by side tests it was picked over the JBL Xtreme 5, came very close to the Harman Kardon Go + Play 3 with cleaner vocals, and sounded clearer and more balanced than the Tronsmart Fiitune X30. Watch for: It isn’t very loud, and the W-King X20s plays louder with punchier bass.
Buy the Zealot ZE21 if sound quality matters more than the price. Buy the W-King H330 if the price matters more than sound quality.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Zealot ZE21 | W-King H330 | |
|---|---|---|
| Price | $187.15 | $119.99 |
| Ranked | #18 of 89 in Boombox Size Portable Bluetooth Speakers | #31 of 89 in Boombox Size Portable Bluetooth Speakers |
| App | No | No |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 36Hz | - |
| Battery Life | 40 hours (Manufacturer specified) | 9 hours at 70% volume (Manufacturer specified) |
| EQ | Yes (multiple modes) | Yes (bass boost button) |
| IP Rating | IPX6 | - |
| MicroSD Playback | Yes | Yes |
| Party Mode | Yes (PartyAdd up to 100 speakers) | - |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Partially |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 20.4 lbs (9.27 kg) | 9.9 lbs (4.5 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | - |
| Power Bank | Yes (USB-A + USB-C) | - |
| USB Playback | Yes | Yes |
| Built-in Microphone | No | - |
| Amplifier Power | 250W | 100W |
| Dimensions | 16.7” x 10.3” x 14.3” (424 x 262 x 363 mm) | 6.9”H x 12.2”W x 7.8”D (174 x 310 x 199 mm) |
| Drivers | 130W subwoofer + 2x 50mm woofers + passive radiators | 1x 140mm (5.5”) woofer + 2x 64mm (2.5”) tweeters + down firing passive radiator |
| Maximum SPL | 116dB (Manufacturer specified) | - |
| Digital Aux Input | No | - |
| Bluetooth Version | 5.3 | 5.4 |
| Battery Capacity | - | 50Wh (11.1V, 4500mAh) |
| Charging Time | - | 1.8 hours (45W) |
| Lights | - | Yes |
| Strap | - | No |
Related Speaker Comparisons
How Zealot ZE21 compares with other leading options:
- 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 September 30, 2026 at 2:57 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: $187.15 Amazon AliExpress 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 →
| 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
- Jagist reviews: Jbl Boombox 4 Vs Zealot Ze21!!! More from Jagistreviews →
- Jagist reviews: Zealot Ze21 Vs Tribit Stormbox Blast 2!!!
- 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 →
- Head-to-Head Comparisons
W-King H330: $119.99 Amazon eBay
Pros: In Jagist’s side by side tests it was picked over the JBL Xtreme 5, came very close to the Harman Kardon Go + Play 3 with cleaner vocals, and sounded clearer and more balanced than the Tronsmart Fiitune X30. A 5.5 inch woofer, two 2.5 inch tweeters and a down firing passive radiator give it deep, full bass for its size. A 50Wh battery with 45W USB-C fast charging (about 1.8 hours), Bluetooth 5.4, stereo pairing, a bass boost button, aux, TF card and USB playback, and ambient lighting.
Cons: It isn’t very loud, and the W-King X20s plays louder with punchier bass. Below about 20% volume its DSP makes the bass cut in and out. The factory tuning is V shaped: Storytripper HD found the vocals thin and dry next to the fuller JBL Authentics 300, and the mids can sound recessed. No handle, no app, no water resistance rating, and W-King rates the battery at about 9 hours at 70% volume.
Full W-King H330 review and specifications →
| Amplifier Power | 100W |
|---|---|
| App | No |
| Aux Input | Yes |
| Battery Capacity | 50Wh (11.1V, 4500mAh) |
| Battery Life | 9 hours at 70% volume (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Version | 5.4 |
| Charging Time | 1.8 hours (45W) |
| Dimensions | 6.9”H x 12.2”W x 7.8”D (174 x 310 x 199 mm) |
| Drivers | 1x 140mm (5.5”) woofer + 2x 64mm (2.5”) tweeters + down firing passive radiator |
| EQ | Yes (bass boost button) |
| Lights | Yes |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Partially |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 9.9 lbs (4.5 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Jagist reviews: Jbl Extreme 5 Vs W-king H330!!! Battle of The Knights!!! More from Jagistreviews →
- Jagist reviews: Harman Kardon Go Plus Play 3 Vs W-king H330!!!
- Jagist reviews: W-king X20s Vs W-king H330!!!
- Jagist reviews: W-king H330 Vs Tribit Stormbox Lava!!!
- Jagist reviews: W-king H330 Vs Tronsmart Fiitune X30!!!
- Storytripper HD: W-King H330 vs JBL Authentics 300 More from storytripperhd →
- J_Strat Battles: Xdobo Mirage Max VS W-king H330
- Techder Audios: HAVIT BassBlast Go vs W-KING H330 More from techderaudios →
- Head-to-Head Comparisons