Short answer: the JBL Partybox On the Go on measured sound quality, the Zealot S78 on price. The JBL Partybox On the Go ranks #44 of 73 boombox speakers at $300. The Zealot S78 ranks #73 at $159.68, $140.32 cheaper.
What the JBL Partybox On the Go offers: Included wireless microphone. Watch for: Poor water rating. Horrible battery life. Probably the worst sounding of the Partybox line.
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 Partybox On the Go when sound quality outweighs the price for you, and the Zealot S78 when the price outweighs sound quality instead.
If sound quality matters at all to you, skip the Zealot S78. It ranks near the bottom of the 73 boombox speakers, so look higher up the list instead.
If battery life is a priority, the Zealot S78 is rated for 40 hours versus 6 hours for the JBL Partybox On the Go.
Water resistance is not close: the Zealot S78 is rated at IP67 (brief submersion), well ahead of the JBL Partybox On the Go at IPX4 (splashing).
Specifications Side By Side
| JBL Partybox On the Go | Zealot S78 | |
|---|---|---|
| Price | $300 | $159.68 |
| Ranked | #44 of 73 in Boombox Size Portable Bluetooth Speakers | #73 of 73 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 49Hz | - |
| Battery Life | 6 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| IP Rating | IPX4 | IP67 |
| Power Bank | Yes (USB-A, 5V/2.1A) | Yes (USB-A) |
| Stereo | Partially | Yes |
| Omnidirectional | No | No |
| USB Playback | Yes | Yes |
| Weight | 16.5 lbs / 7.5 kg | 9.7 lbs / 4.4 kg |
| Bluetooth Codecs | SBC | SBC |
| App | Yes (JBL PartyBox app) | No |
| EQ | No | Yes (multiple modes) |
| TWS | Yes | Yes |
| Party Mode | No | No |
| Built in Microphone | No | No |
| Power Input | USB-C | USB-C |
| Bluetooth Version | 4.2 | - |
| Output Power | 100W | 120W RMS / 150W peak |
| Dimensions | 19.3" x 8.8" x 9.6" (489 x 224 x 244.5 mm) | 16.1" x 6.6" x 7.3" (410 x 167 x 185 mm) |
| Drivers | 5.1" woofer + tweeters | 2x ~120mm (4.72") woofers + 2x ~42mm tweeters + 2x passive radiators |
| Max Volume | 94dB | - |
| Digital Aux Input | No | No |
| MicroSD Playback | - | Yes |
Related Speaker Comparisons
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- Sony SRS-XG500 vs W-King D10
- Harman Kardon Onyx Studio 6 vs Sony SRS-XG500
- Sony SRS-XG500 vs Soundcore Motion Boom+
- Tribit Stormbox Blast 2 vs Zealot S78
- JBL Authentics 300 vs Zealot S78
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 Partybox On the Go: $300 Amazon eBay
Pros: Included wireless microphone.
Cons: Poor water rating. Horrible battery life. Probably the worst sounding of the Partybox line.
Full JBL Partybox On the Go review and specifications →
| App | Yes (JBL PartyBox app) |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 49Hz |
| Battery Life | 6 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 19.3" x 8.8" x 9.6" (489 x 224 x 244.5 mm) |
| Drivers | 5.1" woofer + tweeters |
| EQ | No |
| IP Rating | IPX4 |
| Max Volume | 94dB |
| Omnidirectional | No |
| Output Power | 100W |
| Party Mode | No |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | USB-C |
| Stereo | Partially |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 16.5 lbs / 7.5 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- JBL Partybox On the Go vs Sony SRS-XG500
- JBL Partybox On the Go vs JBL Boombox
- JBL Partybox On the Go vs Soundcore Rave Party 2
- JBL Partybox On the Go vs Soundcore Motion Boom+
- JBL Partybox On the Go vs Sony ULT Field 7
- JBL Partybox On the Go vs Skullcandy Barrel
- JBL Partybox On the Go vs Yeahbox Sonic Boom Max 3
- JBL Partybox On the Go vs Teufel Boomster NG (2017)
- 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