Zealot PT21 vs Samsung MX-ST50B

Last updated: August 18, 2026

Short answer: the Zealot PT21. It ranks #15 of 50 party speakers by sound quality at $216.73; the Samsung MX-ST50B ranks #24 and costs $300, so there is not much of a tradeoff to weigh.

On the Zealot PT21 side: Dual 166mm woofers and 200W output in a lighter, more compact body than the ZE41, with a bundled wireless microphone and echo effect built in for karaoke. Set against that: Unlike some other Zealot models, app-based EQ customization doesn’t appear to be fully supported yet, and IPX5 means it can handle splashes but not submersion.

What the Samsung MX-ST50B gets right: Sounds reasonably balanced. The catch: Not as deep bass as the Partybox 110 or other higher ranked speakers.

Buy the Zealot PT21. It ranks higher for sound quality than the Samsung MX-ST50B and costs less, so there is no real case for the other one.

Zealot PT21 vs Samsung MX-ST50B

Specifications Side By Side

Zealot PT21 Samsung MX-ST50B
Price$216.73$300
Ranked#15 of 50 in Party Size Portable Bluetooth Speakers#24 of 50 in Party Size Portable Bluetooth Speakers
AppNoYes
Aux InputYesYes
Battery Capacity48000mAh (12x4000mAh)-
Bluetooth Version5.35.0
Dimensions21.1" x 8.6" x 11.9" (535 x 219 x 303 mm)13" x 26.2" x 11.9" (329 x 665 x 301 mm)
Drivers2x 166mm woofers + tweeters + midrange drivers2x 6.5" woofers, 2x 2.5" tweeters
EQYes (Bass, Voice, Standard modes)Yes
Frequency Response20Hz - 20kHz (Manufacturer specified)-
IP RatingIPX5IPX5
Microphone InputYes (Karaoke mode with echo effect)Yes (Karaoke mode with echo effect)
MicroSD PlaybackYes-
Output Power200W240W (AC) / 90W (battery)
Party ModeYes (PartyAdd up to 100 speakers)Yes (Samsung Group Play up to 10 speakers)
Power BankYes (USB-A)Yes
Power InputType-CAC Power cord
StereoYesYes
OmnidirectionalNoNo
TWSYesNo
USB PlaybackYesYes
Weight20.7 lbs / 9.4 kg26.2 lbs / 11.9 kg
Digital Aux InputNoNo
Battery Life-18 hours (Manufacturer specified)
Bluetooth Codecs-aptX, AAC, SBC

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

The Two Speakers In Full

Zealot PT21: $216.73 Aliexpress

Zealot PT21 ranking card

Pros: Dual 166mm woofers and 200W output in a lighter, more compact body than the ZE41, with a bundled wireless microphone and echo effect built in for karaoke. Quite deep bass for the price, even deeper than the JBL Boombox 4 in direct comparisons.

Cons: Unlike some other Zealot models, app-based EQ customization doesn’t appear to be fully supported yet, and IPX5 means it can handle splashes but not submersion.

AppNo
Aux InputYes
Battery Capacity48000mAh (12x4000mAh)
Bluetooth Version5.3
Digital Aux InputNo
Dimensions21.1" x 8.6" x 11.9" (535 x 219 x 303 mm)
Drivers2x 166mm woofers + tweeters + midrange drivers
EQYes (Bass, Voice, Standard modes)
Frequency Response20Hz - 20kHz (Manufacturer specified)
IP RatingIPX5
MicroSD PlaybackYes
Microphone InputYes (Karaoke mode with echo effect)
OmnidirectionalNo
Output Power200W
Party ModeYes (PartyAdd up to 100 speakers)
Power BankYes (USB-A)
Power InputType-C
StereoYes
TWSYes
USB PlaybackYes
Weight20.7 lbs / 9.4 kg

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Samsung MX-ST50B: $300 Amazon

Samsung MX-ST50B ranking card

Pros: Sounds reasonably balanced. A little tough to judge based on the sound samples, would be nice to have more comparisons.

Cons: Not as deep bass as the Partybox 110 or other higher ranked speakers. Needs to be plugged in to reach higher volume.

AppYes
Aux InputYes
Battery Life18 hours (Manufacturer specified)
Bluetooth CodecsaptX, AAC, SBC
Bluetooth Version5.0
Digital Aux InputNo
Dimensions13" x 26.2" x 11.9" (329 x 665 x 301 mm)
Drivers2x 6.5" woofers, 2x 2.5" tweeters
EQYes
IP RatingIPX5
Microphone InputYes (Karaoke mode with echo effect)
OmnidirectionalNo
Output Power240W (AC) / 90W (battery)
Party ModeYes (Samsung Group Play up to 10 speakers)
Power BankYes
Power InputAC Power cord
StereoYes
TWSNo
USB PlaybackYes
Weight26.2 lbs / 11.9 kg

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