Short answer: the JBL Partybox Encore 2 if sound quality matters most, the Zealot S78 if price matters most. The JBL Partybox Encore 2 ranks #4 of 73 boombox speakers at $330. The Zealot S78 ranks #73 at $159.68, $170.32 cheaper.
What the JBL Partybox Encore 2 offers: Appears to have better off axis performance due to the move to dome tweeters over cone. A little less rolled off in the highs than the first Encore. Goes slightly deeper than the old Encore. Includes 2 wireless microphones. Better battery life than the first Encore. Watch for: Missing a little bit of upper bass.
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 Encore 2 if sound quality is the priority over the price, or the Zealot S78 if the price is the priority over sound quality.
The Zealot S78 is not a sound-quality pick. It sits near the bottom of the 73 boombox speakers; there are better options higher up.
There is a real battery-life gap here: the Zealot S78 is rated for 40 hours, the JBL Partybox Encore 2 only 15 hours.
Water resistance is not close: the Zealot S78 is rated at IP67 (brief submersion), well ahead of the JBL Partybox Encore 2 at IPX4 (splashing).
Specifications Side By Side
| JBL Partybox Encore 2 | Zealot S78 | |
|---|---|---|
| Price | $330 | $159.68 |
| Ranked | #4 of 73 in Boombox Size Portable Bluetooth Speakers | #73 of 73 in Boombox Size Portable Bluetooth Speakers |
| App | Yes (JBL PartyBox app) | No |
| Aux Input | Yes | Yes |
| Battery Life | 15 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| Built in Microphone | No | No |
| EQ | Yes (7 band App EQ) | Yes (multiple modes) |
| IP Rating | IPX4 | IP67 |
| Max Volume | 110dB | - |
| Party Mode | Yes (Auracast) | No |
| Power Bank | Yes (USB-C) | Yes (USB-A) |
| Power Input | AC Power cord | USB-C |
| Removable Battery | Yes | - |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| USB Playback | Yes | Yes |
| Weight | 14.1 lbs / 6.4 kg | 9.7 lbs / 4.4 kg |
| Wireless Microphones | Yes 2 Included | - |
| Bluetooth Codecs | SBC | SBC |
| Bluetooth Version | 5.4 | - |
| Output Power | 100W RMS | 120W RMS / 150W peak |
| Dimensions | 12.6" x 13.3" x 10.4" (319.5 x 338.6 x 263 mm) | 16.1" x 6.6" x 7.3" (410 x 167 x 185 mm) |
| Drivers | 1x 135mm (5.25") woofer + 2x 20mm (0.75") dome 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 Partybox Encore Essential 2 vs Zealot ZE21
- JBL Partybox Encore Essential 2 vs Zealot S89
- Harman Kardon Go + Play 3 vs W-King D10
- JBL Partybox Encore Essential vs Zealot S78
- JBL Partybox Encore 2 vs Zealot S95
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 Encore 2: $330 Samsclub eBay
Pros: Appears to have better off axis performance due to the move to dome tweeters over cone. A little less rolled off in the highs than the first Encore. Goes slightly deeper than the old Encore. Includes 2 wireless microphones. Better battery life than the first Encore.
Cons: Missing a little bit of upper bass.
Full JBL Partybox Encore 2 review and specifications →
| App | Yes (JBL PartyBox app) |
|---|---|
| Aux Input | Yes |
| Battery Life | 15 hours (Manufacturer specified) |
| 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 |
| Max Volume | 110dB |
| Omnidirectional | No |
| Output Power | 100W RMS |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C) |
| Power Input | AC Power cord |
| Removable Battery | Yes |
| Stereo | Yes |
| TWS | Yes |
| USB Playback | Yes |
| Weight | 14.1 lbs / 6.4 kg |
| Wireless Microphones | Yes 2 Included |
- Links
- Reviews, Comparisons and Sound Samples
- 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
- 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 🎶
- Dominik Reviews: JBL Partybox Encore 2 vs JBL Boombox 3 WiFi - Sound Test - Wide vs Narrow Soundstage! More from Dominik Reviews →
- M1M Tech Channel: JBL Partybox Encore 2 Ein fettes Bass Upgrade
- M1MTechChannel: Welche JBL Partybox ist die BESTE ? Alle Partyboxen im Vergleich | 2026
- Reddit Search for JBL Partybox Encore 2 Review
- Head-to-Head Comparisons
- JBL Partybox Encore 2 vs Harman Kardon Go + Play 3
- JBL Partybox Encore 2 vs JBL Partybox Encore Essential 2
- JBL Partybox Encore 2 vs Tribit Stormbox Blast
- JBL Partybox Encore 2 vs JBL Partybox Encore
- JBL Partybox Encore 2 vs Earfun Uboom X
- JBL Partybox Encore 2 vs JBL Partybox Encore Essential
- JBL Partybox Encore 2 vs Harman Kardon Onyx Studio 8
- JBL Partybox Encore 2 vs Harman Kardon Onyx Studio 6
- See all 47 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