Short answer: the Zealot ZE21. It ranks #18 of 113 boombox speakers by sound quality, rated 4.0/5, at $187.15. The Tronsmart Fiitune X30 ranks #54, rated 3.3/5, at $144.90, $42.25 cheaper, which does not close the gap in sound quality.
The Zealot ZE21 is the better-sounding, longer-running choice. A rugged battery boombox with unusually deep bass, very long battery life, and stereo pairing for party scale sound. It is rated for 40 hours of battery against 14 for the Tronsmart Fiitune X30. Watch for: 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 Tronsmart Fiitune X30 is the lighter choice. A loud six driver speaker with LDAC Bluetooth, water resistance and a long rated battery. At 7.9 lbs (3.6 kg) it weighs much less than the Zealot ZE21 at 20.4 lbs (9.27 kg). It supports LDAC Bluetooth, which the Zealot ZE21 lacks. Watch for: Side by side it clearly lost to the Harman Kardon Go + Play 3, the Soundcore Boom 2 and the EarFun Uboom X: listeners described muddy, dark mid-bass that fails to reproduce low notes, dull and underemphasized treble, and a boxy, sterile sound at low volume next to the JBL Xtreme 4.
Buy the Zealot ZE21. It is rated higher for sound quality, and saving $42.25 with the Tronsmart Fiitune X30 does not make up for the sound-quality gap.
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Prices on this page were last checked November 14, 2026 at 6:17 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 ZE21 | Tronsmart Fiitune X30 | |
|---|---|---|
| Price | $187.15 | $144.90 |
| Ranked | #18 of 113 in Boombox Size Portable Bluetooth Speakers | #54 of 113 in Boombox Size Portable Bluetooth Speakers |
| App | No | Yes (Tronsmart) |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 36Hz | - |
| Battery Life | 40 hours (Manufacturer specified) | 14 hours (Manufacturer specified) |
| EQ | Yes (multiple modes) | Yes |
| IP Rating | IPX6 | IPX6 |
| MicroSD Playback | Yes | - |
| Party Mode | Yes (PartyAdd up to 100 speakers) | - |
| Power Input | USB-C | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 20.4 lbs (9.27 kg) | 7.9 lbs (3.6 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC, LDAC |
| Power Bank | Yes (USB-A + USB-C) | - |
| USB Playback | Yes | - |
| Built-in Microphone | No | - |
| Amplifier Power | 250W | 80W |
| Dimensions | 16.7” x 10.3” x 14.3” (424 x 262 x 363 mm) | 14.6” x 7.7” x 5.1” (370 x 195 x 130 mm) |
| Drivers | 130W subwoofer + 2x 50mm woofers + passive radiators | Racetrack woofer + 2x midrange + 2x tweeters + upward-firing driver |
| Maximum SPL | 116dB (Manufacturer specified) | - |
| Digital Aux Input | No | - |
| Bluetooth Version | 5.3 | 5.3 |
| Strap | - | No |
Where the Ratings Come From
- Zealot ZE21: reviews by Techder Audios, Jay’s Straight Up Reviews & More and Jagist.
- Tronsmart Fiitune X30: reviews by Dominik, Jagist and Storytripper HD.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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