Zealot S78 Review: Ranked #90 of 91

Last updated: October 5, 2026

The Zealot S78 ranks #90 out of 91 total Boombox Size Portable Bluetooth Speakers for sound quality. See all Portable Bluetooth rankings for every top pick.

Brand: Zealot

Prices on this page were last checked October 5, 2026 at 10:21 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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Zealot S78 - ranked #90 of 91 Boombox Size Portable Bluetooth Speakers · Editor's rating 2/5
Check price at Amazon ($159.68) →

#90 Zealot S78: $159.68 Amazon AliExpress 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.

How it compares: Just above it: Artsound PWR05 - $639 more, 30 fewer hours of battery life. Just below it: Pioneer PBM5 - $11 cheaper, 27 fewer hours of battery life.

Amplifier Power120W RMS / 150W peak
AppNo
Aux InputYes
Battery Life40 hours (Manufacturer specified)
BluetoothYes
Bluetooth CodecsSBC
Built-in MicrophoneNo
Digital Aux InputNo
Dimensions16.1” x 6.6” x 7.3” (410 x 167 x 185 mm)
Drivers2x ~120mm (4.72”) woofers + 2x ~42mm tweeters + 2x passive radiators
EQYes (multiple modes)
IP RatingIP67
MicroSD PlaybackYes
OmnidirectionalNo
Party ModeNo
Power BankYes (USB-A)
Power InputUSB-C
StereoYes
StrapYes (detachable shoulder strap)
TWSYes
USB PlaybackYes
Weight9.7 lbs (4.4 kg)
Check current price at Amazon ($159.68) →Check current price at AliExpress ($91.38) →Search eBay for Zealot S78 →

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