These sit in different size classes, so this is not a straight ranking comparison. The JBL Partybox Club 120 ranks #6 of 50 party speakers by sound quality at $349.95; the Zealot ZE21 ranks #18 of 111 boombox speakers by sound quality at $187.15.
What the JBL Partybox Club 120 does well: A party speaker on wheels with quite neutral sound, a removable battery, and mic and guitar inputs. The catch: Its 40Hz to 20kHz (Manufacturer specified) specification points to limited deep-bass reach for the cabinet size.
The Zealot ZE21 is the longer-running, tougher option. 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 12 for the JBL Partybox Club 120. It is rated IPX6 against IPX4 for the JBL Partybox Club 120. The catch: 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.
Buy the JBL Partybox Club 120 at $349.95 if you want a party speaker. Buy the Zealot ZE21 at $187.15 if you want a boombox speaker instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
A party speaker on wheels with quite neutral sound, a removable battery, and mic and guitar inputs.
A rugged battery boombox with unusually deep bass, very long battery life, and stereo pairing for party scale sound.
Prices on this page were last checked October 26, 2026 at 12:00 AM 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| JBL Partybox Club 120 | Zealot ZE21 | |
|---|---|---|
| Price | $349.95 | $187.15 |
| Ranked | #6 of 50 in Party Size Portable Bluetooth Speakers | #18 of 111 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | Yes | Yes |
| Battery Life | 12 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Bluetooth Version | 5.4 | 5.3 |
| Charging Time | 3.5 hours | - |
| Drivers | 2x 5.25” woofers, 2x 2.25” tweeters | 130W subwoofer + 2x 50mm woofers + passive radiators |
| EQ | Yes (5 band) | Yes (multiple modes) |
| Frequency Response | 40Hz - 20kHz (Manufacturer specified) | - |
| Guitar Input | Yes | - |
| IP Rating | IPX4 | IPX6 |
| Microphone Input | Yes (Karaoke mode with echo effect) | - |
| Party Mode | Yes (Auracast) | Yes (PartyAdd up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/2.1A) | Yes (USB-A + USB-C) |
| Power Input | AC Power cord | USB-C |
| Removable Battery | Yes | - |
| Stereo | Partially | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 23.8 lbs (10.8 kg) | 20.4 lbs (9.27 kg) |
| Amplifier Power | 160W | 250W |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Dimensions | 22.4”H x 11.4”W x 11.7”D (570 x 288.4 x 297 mm) | 16.7” x 10.3” x 14.3” (424 x 262 x 363 mm) |
| Strap | No | - |
| Bass Extension (-10dB) | - | 36Hz |
| MicroSD Playback | - | Yes |
| Built-in Microphone | - | No |
| Maximum SPL | - | 116dB (Manufacturer specified) |
Related Speaker Comparisons
More worthwhile head-to-heads for JBL Partybox Club 120: