Short answer: the JBL Partybox Encore 2 for karaoke and off-axis consistency, the Zealot ZE51 for cleaner detail. The Encore 2 includes two wireless microphones, goes slightly deeper than the old Encore and rolls off the highs a little less thanks to dome tweeters, though it is missing a little upper bass. The ZE51 is cleaner and wider than the ZE41 with less distortion at volume, but gives up raw bass depth and price to the ZE41.
Buy the JBL Partybox Encore 2. It is rated higher for sound quality, and the $33.61 you would save on the Zealot ZE51 does not close the gap.
There is a real battery-life gap here: the JBL Partybox Encore 2 is rated for 15 hours, the Zealot ZE51 only 4 hours.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Zealot ZE51 | JBL Partybox Encore 2 | |
|---|---|---|
| Price | $296.39 after coupon | $330 |
| Ranked | #16 of 98 in Boombox Size Portable Bluetooth Speakers | #4 of 98 in Boombox Size Portable Bluetooth Speakers |
| App | Yes | Yes (JBL PartyBox app) |
| Aux Input | Yes | Yes |
| Battery Capacity | 48000mAh (12x4000mAh) | - |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 5.4 |
| Dimensions | 22.1” x 9.4” x 13” (562 x 238 x 331 mm) | 12.6” x 13.3” x 10.4” (319.5 x 338.6 x 263 mm) |
| EQ | Yes (Hi-Res, 3D Surround, Extra Bass, Vocal and other sound modes) | Yes (7 band App EQ) |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) | - |
| IP Rating | IPX5 | IPX4 |
| Microphone Input | Yes (Karaoke mode) | - |
| MicroSD Playback | Yes | - |
| Amplifier Power | 250W | 100W RMS |
| Power Bank | Yes (USB-A + USB-C) | Yes (USB-C) |
| Power Input | Type-C | AC Power cord |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 26 lbs (11.81 kg) | 14.1 lbs (6.4 kg) |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) | SBC |
| Drivers | 1x 133mm + 2x 93mm + 2x 45mm | 1x 135mm (5.25”) woofer + 2x 20mm (0.75”) dome tweeters |
| Battery Life | 4 hours (Manufacturer specified) | 15 hours (Manufacturer specified) |
| Strap | Yes (strap) | No |
| Built-in Microphone | - | No |
| Maximum SPL | - | 110dB (measured by Alan Ross Reviews) |
| Party Mode | - | Yes (Auracast) |
| Removable Battery | - | Yes |
| Wireless Microphones | - | Yes 2 Included |
| Lights | - | Yes |
| Bass Extension (-10dB) | - | 42Hz |
Related Speaker Comparisons
How JBL Partybox Encore 2 compares with other leading options:
- EarFun Uboom X vs JBL Partybox Encore 2
- Tribit Stormbox Blast vs JBL Partybox Encore 2
- Harman Kardon Go + Play 3 vs JBL Partybox Encore 2
- JBL Partybox Encore 2 vs JBL PartyBox On-The-Go 2 Plus
- JBL Partybox Encore 2 vs JBL Partybox Encore Essential 2
Prices on this page were last checked October 13, 2026 at 3:17 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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The Two Speakers In Full
Zealot ZE51: $296.39 after coupon Amazon $296.39 AliExpress $235.33 eBay
Pros: Cleaner sound and a wider stereo soundstage than the Zealot ZE41, with less distortion at high volume for better instrumental detail and clarity.
Cons: The Zealot ZE41 still wins on raw bass depth and price. Large and heavy like the rest of the boombox class, and clarity still isn’t up to dedicated hi-fi speakers.
Full Zealot ZE51 review and specifications →
| Released | Mar 2026 (7 months ago) |
|---|---|
| Amplifier Power | 250W |
| App | Yes |
| Aux Input | Yes |
| Battery Capacity | 48000mAh (12x4000mAh) |
| Battery Life | 4 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.3 |
| Digital Aux Input | No |
| Dimensions | 22.1” x 9.4” x 13” (562 x 238 x 331 mm) |
| Drivers | 1x 133mm + 2x 93mm + 2x 45mm |
| EQ | Yes (Hi-Res, 3D Surround, Extra Bass, Vocal and other sound modes) |
| Frequency Response | 20Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX5 |
| MicroSD Playback | Yes |
| Microphone Input | Yes (Karaoke mode) |
| Omnidirectional | No |
| Power Bank | Yes (USB-A + USB-C) |
| Power Input | Type-C |
| Stereo | Yes |
| Strap | Yes (strap) |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 26 lbs (11.81 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- J_Strat Battles: Zealot ZE51 short hz test video
- J_Strat Battles: ZEALOT ZE51 VS JBL BOOMBOX 4 (OLD FIRMWARE VERSION) 🧨🧨🧨
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- J_Strat Battles: Zealot ZE51 vs PT11 😎😎😎
- Head-to-Head Comparisons
- Zealot ZE51 vs Zealot ZE41
- Zealot ZE51 vs Harman Kardon Onyx Studio 9
- Zealot ZE51 vs Zealot ZE21
- Zealot ZE51 vs Harman Kardon Onyx Studio 7
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JBL Partybox Encore 2: $330 Sam’s Club $330 eBay
Older model: the JBL Partybox Encore (ranked lower, rated 4.3/5). See every JBL PartyBox Encore generation.
Same family: the JBL Partybox Encore Essential 2 (larger model, ranked lower, rated 4.3/5).
Pros: The Encore 2 improves the original with dome tweeters, a less boomy balance, slightly deeper bass, longer battery life and two included wireless microphones. Its compact karaoke-ready design and 7-band EQ make it more adaptable indoors than the earlier Encore. Measured bass extension of 42Hz (-10dB).
Cons: It still lacks some upper-bass punch and cannot match the scale of the larger PartyBoxes. The main value is compact karaoke convenience rather than full-range party output.
Full JBL Partybox Encore 2 review and specifications →
| Released | Apr 2025 (1 year ago) |
|---|---|
| Amplifier Power | 100W RMS |
| App | Yes (JBL PartyBox app) |
| Aux Input | Yes |
| Bass Extension (-10dB) | 42Hz |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.4 |
| Built-in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 12.6” x 13.3” x 10.4” (319.5 x 338.6 x 263 mm) |
| Drivers | 1x 135mm (5.25”) woofer + 2x 20mm (0.75”) dome tweeters |
| EQ | Yes (7 band App EQ) |
| IP Rating | IPX4 |
| Lights | Yes |
| Maximum SPL | 110dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C) |
| Power Input | AC Power cord |
| Removable Battery | Yes |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 14.1 lbs (6.4 kg) |
| Wireless Microphones | Yes 2 Included |
- Links
- Reviews, Comparisons and Sound Samples
- JOY‘s 🎧3D🔈Audio-Show: JBL Boombox 4 vs Partybox Encore 2 - outdoor loudness & basstest More from Oluv’Sone →
- Alan Ross Reviews: JBL giving it to us large! The good, The bad, The diabolical! More from alanrossreviews →
- M1M Tech Channel: Partybox Killer? 2x Earfun UBoom X stärker als JBL Encore 2 ? More from M1MTechChannel →
- M1M Tech Channel: JBL Partybox Encore 2 Ein fettes Bass Upgrade
- M1MTechChannel: Welche JBL Partybox ist die BESTE ? Alle Partyboxen im Vergleich | 2026
- Dominik Reviews: JBL Partybox Encore 2 vs JBL Boombox 3 WiFi - Sound Test - Wide vs Narrow Soundstage! More from Dominik Reviews →
- Mateusz Cholewa: JBL Partybox ENCORE 2👌FULL TEST🆚 JBL Partybox ENCORE 1 More from Mateusz Cholewa →
- Mateusz Cholewa: Jbl Partybox Encore 2 📦UNBOXING. Short TEST AUDIO z ENCORE 1👌
- Mateusz Cholewa: JBL Encore 2 Partybox Deep Bass 🆚 Jbl Boombox 3 WiFi 🎶
- GYMCADDY: JBL Partybox On The Go 2 Vs JBL Partybox Encore 2 More from GYMCADDY →
- GYMCADDY: Soundboks Mix Vs JBL Partybox 120
- Head-to-Head Comparisons
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