Zealot S89 vs JBL Boombox 3

Last updated: August 18, 2026

Short answer: the Zealot S89. It ranks #16 of 73 boombox speakers by sound quality at $193.58; the JBL Boombox 3 ranks #21 and costs $349.95, so there is not much of a tradeoff to weigh.

What the Zealot S89 offers: A great value for the bass performance, play time and max volume in the boombox class. Watch for: On the heavy side.

What the JBL Boombox 3 gets right: IP67 rated. The catch: Dips in mid bass range which makes the bass sound undefined, bass boosted, peaky at 700hz, not quite as good mids and treble as the Blast.

Buy the Zealot S89. It ranks higher for sound quality than the JBL Boombox 3 and costs less, so there is no real case for the other one.

If battery life is a priority, the Zealot S89 is rated for 40 hours versus 24 hours for the JBL Boombox 3.

Zealot S89 vs JBL Boombox 3

Specifications Side By Side

Zealot S89 JBL Boombox 3
Price$193.58$349.95
Ranked#16 of 73 in Boombox Size Portable Bluetooth Speakers#21 of 73 in Boombox Size Portable Bluetooth Speakers
AppNoNo
Aux InputYesYes
Bass Extension (-10dB)36Hz43Hz
Battery Life40 hours (Manufacturer specified)24 hours (Manufacturer specified)
EQYes (multiple modes)No
IP RatingIPX6IP67
Bluetooth CodecsSBCSBC
MicroSD PlaybackYesNo
Party ModeYes (PartyAdd up to 100 speakers)Yes (PartyBoost up to 100 speakers)
Power InputUSB-CAC Power cable
StereoYesYes
OmnidirectionalNoNo
TWSYesYes
Weight16.1 lbs / 7.3 kg14.8 lbs / 6.7 kg
Power BankYes (USB-A + USB-C)Yes (USB-A)
USB PlaybackYesNo
Built in MicrophoneNoNo
Output Power250W180W AC / 136W battery
Dimensions21.2" x 10.4" x 9.4" (538 x 265 x 240 mm)19" x 10.1" x 7.9" (482 x 257 x 200 mm)
Drivers130W subwoofer + 2x 40mm drivers + 2x tweeters1x 189mm subwoofer + 2x 81mm woofers + 2x 20mm tweeters
Digital Aux InputNoNo
Aux Latency-25ms
Bluetooth Latency-100ms
Max Volume-110dB
FM Tuner-No
Microphone Input-No

More useful head-to-heads from the same speaker class:

The Two Speakers In Full

Zealot S89: $193.58 Aliexpress Amazon

Zealot S89 ranking card

Pros: A great value for the bass performance, play time and max volume in the boombox class. Likely the same internals as the Zealot ZE21

Cons: On the heavy side. A little rolled off up top and not that balanced through the rest of the range. Clarity isn’t as good as better speakers. Bass EQ is bloated and muddy sounding

AppNo
Aux InputYes
Bass Extension (-10dB)36Hz
Battery Life40 hours (Manufacturer specified)
Bluetooth CodecsSBC
Built in MicrophoneNo
Digital Aux InputNo
Dimensions21.2" x 10.4" x 9.4" (538 x 265 x 240 mm)
Drivers130W subwoofer + 2x 40mm drivers + 2x tweeters
EQYes (multiple modes)
IP RatingIPX6
MicroSD PlaybackYes
OmnidirectionalNo
Output Power250W
Party ModeYes (PartyAdd up to 100 speakers)
Power BankYes (USB-A + USB-C)
Power InputUSB-C
StereoYes
TWSYes
USB PlaybackYes
Weight16.1 lbs / 7.3 kg

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JBL Boombox 3: $349.95 Amazon

JBL Boombox 3 ranking card

Pros: IP67 rated. 24 hour battery life (6.5 hour charge time). Doubles as a power bank. PartyBoost links up to 100 compatible JBL speakers. Three-way speaker system with subwoofer.

Cons: Dips in mid bass range which makes the bass sound undefined, bass boosted, peaky at 700hz, not quite as good mids and treble as the Blast.

AppNo
Aux InputYes
Aux Latency25ms
Bass Extension (-10dB)43Hz
Battery Life24 hours (Manufacturer specified)
Bluetooth CodecsSBC
Bluetooth Latency100ms
Built in MicrophoneNo
Digital Aux InputNo
Dimensions19" x 10.1" x 7.9" (482 x 257 x 200 mm)
Drivers1x 189mm subwoofer + 2x 81mm woofers + 2x 20mm tweeters
EQNo
FM TunerNo
IP RatingIP67
Max Volume110dB
MicroSD PlaybackNo
Microphone InputNo
OmnidirectionalNo
Output Power180W AC / 136W battery
Party ModeYes (PartyBoost up to 100 speakers)
Power BankYes (USB-A)
Power InputAC Power cable
StereoYes
TWSYes
USB PlaybackNo
Weight14.8 lbs / 6.7 kg

As an eBay Partner, we may be compensated if you make a purchase.