Short answer: the JBL Boombox 3 Wifi on measured sound quality, the Zealot S78 on price. The JBL Boombox 3 Wifi ranks #20 of 73 boombox speakers at $389.95. The Zealot S78 ranks #73 at $159.68, $230.27 cheaper.
What the JBL Boombox 3 Wifi offers: Loudest speaker in the category. Slightly better frequency response than the non-wifi version. Watch for: Bass boosted. Dip at 160hz
What the Zealot S78 offers: 120W RMS output with 150W peak power, exceptional 40-hour battery life, power bank function, IP67 waterproof, EQ with multiple modes, dual woofers with tweeters and passive radiators, MicroSD and USB playback, AUX input, TWS stereo pairing, USB-C charging Watch for: Gets distorted above 50%. Not much bass. Volume level fluctuates at high volume.
Buy the JBL Boombox 3 Wifi if sound quality matters more than the price. Buy the Zealot S78 if the price matters more than sound quality.
Skip the Zealot S78 if sound quality matters to you. It ranks near the bottom of the 73 boombox speakers.
There is a real battery-life gap here: the Zealot S78 is rated for 40 hours, the JBL Boombox 3 Wifi only 24 hours.
Specifications Side By Side
| JBL Boombox 3 Wifi | Zealot S78 | |
|---|---|---|
| Price | $389.95 | $159.68 |
| Ranked | #20 of 73 in Boombox Size Portable Bluetooth Speakers | #73 of 73 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 43Hz | - |
| Battery Life | 24 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| IP Rating | IP67 | IP67 |
| Max Volume | 111dB | - |
| Party Mode | No | No |
| Power Bank | Yes (USB-A, 5V/2A) | Yes (USB-A) |
| Power Input | AC Power cable | USB-C |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 14.6 lbs / 6.6 kg | 9.7 lbs / 4.4 kg |
| Wifi | Yes | - |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | No | Yes (multiple modes) |
| USB Playback | No | Yes |
| Built in Microphone | No | No |
| Output Power | 200W AC / 140W battery | 120W RMS / 150W peak |
| Dimensions | 19.1" x 10.1" x 7.9" (484 x 256 x 200 mm) | 16.1" x 6.6" x 7.3" (410 x 167 x 185 mm) |
| Drivers | 1x 189mm subwoofer + 2x 81mm woofers + 2x 20mm tweeters | 2x ~120mm (4.72") woofers + 2x ~42mm tweeters + 2x passive radiators |
| Digital Aux Input | No | No |
| MicroSD Playback | - | Yes |
Related Speaker Comparisons
A few more comparisons worth a look in the same class:
- JBL Boombox 3 vs Soundcore Rave Party 2
- JBL Boombox 3 vs W-King D20
- Harman Kardon Onyx Studio 9 vs JBL Boombox 3
- JBL Boombox 3 Wifi vs Zealot S95
- Harman Kardon Onyx Studio 8 vs JBL Boombox 3 Wifi
Prices on this page were last checked August 27, 2026 at 10:09 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
JBL Boombox 3 Wifi: $389.95 Amazon eBay
Pros: Loudest speaker in the category. Slightly better frequency response than the non-wifi version.
Cons: Bass boosted. Dip at 160hz
Full JBL Boombox 3 Wifi review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 43Hz |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 19.1" x 10.1" x 7.9" (484 x 256 x 200 mm) |
| Drivers | 1x 189mm subwoofer + 2x 81mm woofers + 2x 20mm tweeters |
| EQ | No |
| IP Rating | IP67 |
| Max Volume | 111dB |
| Omnidirectional | No |
| Output Power | 200W AC / 140W battery |
| Party Mode | No |
| Power Bank | Yes (USB-A, 5V/2A) |
| Power Input | AC Power cable |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | No |
| Weight | 14.6 lbs / 6.6 kg |
| Wifi | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Dominik Reviews: JBL Partybox Encore 2 vs JBL Boombox 3 WiFi - Sound Test - Wide vs Narrow Soundstage! More from Dominik Reviews →
- Mateusz Cholewa: JBL Encore 2 Partybox Deep Bass 🆚 Jbl Boombox 3 WiFi 🎶 More from Mateusz Cholewa →
- Alan Ross Reviews: Not quite! JBL Authentics 300 review and sound test vs Boombox 3, Encore and Stormbox Blast More from alanrossreviews →
- Alan Ross Reviews: WiFi Edition: JBL Boombox 3 ultimate review! vs Boombox 3 Bluetooth edition
- Mateusz Cholewa: Soundcore Rave 3🧐 🆚 Jbl Boombox 3 WiFi
- Reddit Search for JBL Boombox 3 Wifi Review
- Head-to-Head Comparisons
- JBL Boombox 3 Wifi vs JBL Boombox 3
- JBL Boombox 3 Wifi vs Harman Kardon Onyx Studio 5
- JBL Boombox 3 Wifi vs Tribit Stormbox Blast 2
- JBL Boombox 3 Wifi vs Harman Kardon Go + Play 2
- JBL Boombox 3 Wifi vs JBL Boombox 4
- JBL Boombox 3 Wifi vs LG Xboom Stage 301
- JBL Boombox 3 Wifi vs Zealot S95
- JBL Boombox 3 Wifi vs Zealot S89
- See all 49 comparisons
Zealot S78: $159.68 Amazon Aliexpress eBay
Pros: 120W RMS output with 150W peak power, exceptional 40-hour battery life, power bank function, IP67 waterproof, EQ with multiple modes, dual woofers with tweeters and passive radiators, MicroSD and USB playback, AUX input, TWS stereo pairing, USB-C charging
Cons: Gets distorted above 50%. Not much bass. Volume level fluctuates at high volume.
Full Zealot S78 review and specifications →
| App | No |
|---|---|
| Aux Input | Yes |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 16.1" x 6.6" x 7.3" (410 x 167 x 185 mm) |
| Drivers | 2x ~120mm (4.72") woofers + 2x ~42mm tweeters + 2x passive radiators |
| EQ | Yes (multiple modes) |
| IP Rating | IP67 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Output Power | 120W RMS / 150W peak |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 9.7 lbs / 4.4 kg |
- Reviews, Comparisons and Sound Samples
- Jay’s Straight Up Reviews & More: W-King X20 vs Zealot S78 Bluetooth Boombox Battle Outdoor Tailgater Special 🚗 Let the Whoopin’ Begin More from JaysStraightUpReviews →
- Jay’s Straight Up Reviews & More: DBSOARS F29 Max vs Zealot S78 🛜 (5B) Budget Bluetooth Boombox Basement Battle 🔊 Bass Modes Enabled
- Reddit Search for Zealot S78 Review
- Head-to-Head Comparisons