Short answer: the JBL Partybox On the Go. It ranks #64 of 98 boombox speakers by sound quality, rated 3.0/5, at $249.95. The Zealot S78 ranks #97, rated 2.0/5, at $159.68, $90.27 cheaper, which does not close the gap in sound quality.
The JBL Partybox On the Go is the better-sounding choice. A wireless microphone is included. Watch for: Battery life is short, and its sound trails the rest of the Partybox line.
The Zealot S78 is the longer-running, lighter pick. A robust 9.7 lbs (4.4 kg) party speaker with claimed 120W RMS output, IP67 protection, USB-C charging, a power-bank function, aux, USB and microSD playback, TWS pairing and multiple EQ modes. It is rated for 40 hours of battery against 6 for the JBL Partybox On the Go. At 9.7 lbs (4.4 kg) it weighs much less than the JBL Partybox On the Go at 16.5 lbs (7.5 kg). It is rated IP67 against IPX4 for the JBL Partybox On the Go. Watch for: At high volume, reviews report distortion and fluctuating level, so its headline power is more useful below its maximum setting.
Buy the JBL Partybox On the Go. It is rated higher for sound quality, and saving $90.27 with the Zealot S78 does not make up for the sound-quality gap.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| JBL Partybox On the Go | Zealot S78 | |
|---|---|---|
| Price | $249.95 | $159.68 |
| Ranked | #64 of 98 in Boombox Size Portable Bluetooth Speakers | #97 of 98 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 | Yes | Yes |
| 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 | 5.3 |
| Amplifier 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 |
| Maximum SPL | 94dB (Manufacturer specified) | - |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | Yes (detachable shoulder strap) |
| MicroSD Playback | - | Yes |
Related Speaker Comparisons
More worthwhile head-to-heads for JBL Partybox On the Go:
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- JBL Partybox Encore 2 vs JBL Partybox On the Go
- JBL PartyBox On-The-Go 2 Plus vs JBL Partybox On the Go
- JBL Partybox Encore Essential 2 vs JBL Partybox On the Go
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
JBL Partybox On the Go: $249.95 Amazon $249.95 eBay
Newer model: the JBL PartyBox On-The-Go 2 Plus, ranked higher, rated 4.4/5, released Apr 2026. It adds USB audio input, adjustable EQ, party mode and LC3. Battery life goes from 6 to 15 hours. See every JBL PartyBox On-The-Go generation.
Pros: JBL Partybox On the Go uses 5.1” woofer + tweeters. Its 7.5 kg, claimed 6 hours (Manufacturer specified) battery life, IPX4 protection, aux input, up to 94dB and limited-stereo playback make it a practical option for its intended room or portable use. A wireless microphone is included. Measured bass extension of 49Hz (-10dB).
Cons: Bass is limited by its 49Hz specification. No EQ adjustment. Battery life is short, and its sound trails the rest of the Partybox line.
Full JBL Partybox On the Go review and specifications →
| Released | Sep 2020 (6 years ago) |
|---|---|
| Amplifier Power | 100W |
| App | Yes (JBL PartyBox app) |
| Aux Input | Yes |
| Bass Extension (-10dB) | 49Hz |
| Battery Life | 6 hours (Manufacturer specified) |
| Bluetooth | Yes |
| 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 |
| Maximum SPL | 94dB (Manufacturer specified) |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | Yes (USB-A, 5V/2.1A) |
| Power Input | USB-C |
| Stereo | Partially |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 16.5 lbs (7.5 kg) |
- Links
- Reviews, Comparisons and Sound Samples
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Zealot S78: $159.68 Amazon $159.68 AliExpress $91.38 eBay
Pros: A robust 4.4kg party speaker with claimed 120W RMS output, IP67 protection, USB-C charging, a power-bank function, aux, USB and microSD playback, TWS pairing and multiple EQ modes. Reviews find it very loud with useful bass and long claimed battery life, making it a credible choice for outdoor gatherings.
Cons: At high volume, reviews report distortion and fluctuating level, so its headline power is more useful below its maximum setting. It has no app-based EQ, and the bass and midrange refinement do not match better-established boombox speakers; assess its sound in person if tonal accuracy matters.
Full Zealot S78 review and specifications →
| Released | May 2023 (3 years ago) |
|---|---|
| Amplifier Power | 120W RMS / 150W peak |
| App | No |
| Aux Input | Yes |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 16.1” 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 |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable shoulder strap) |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 9.7 lbs (4.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
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