Sony ULT Field 5 vs Zealot S97

Last updated: August 18, 2026

Short answer: the Sony ULT Field 5 for better sound quality, the Zealot S97 for the lower price. The Sony ULT Field 5 ranks #41 of 77 large speakers at $198. The Zealot S97 ranks #46 at $65.86, $132.14 cheaper.

What the Sony ULT Field 5 gets right: IP67 rated, dustproof and water resistant. The catch: Bass not as deep as others in the category, and sound quality overall is just okay.

On the Zealot S97 side: There is nothing else for $48 with that deep of bass and a reasonable tuning. Set against that: Doesn’t get very loud compared to other speakers in this class.

Buy the Sony ULT Field 5 if sound quality matters more than the price. Buy the Zealot S97 if the price matters more than sound quality.

If battery life is a priority, the Sony ULT Field 5 is rated for 25 hours versus 12 hours for the Zealot S97.

Sony ULT Field 5 vs Zealot S97

Specifications Side By Side

Sony ULT Field 5 Zealot S97
Price$198$65.86 with coupon YZZL10
Ranked#41 of 77 in Large Size Portable Bluetooth Speakers#46 of 77 in Large Size Portable Bluetooth Speakers
AppYesNo
Aux InputYesYes
Battery Life25 hours (Manufacturer specified)12 hours (Manufacturer specified)
Bluetooth CodecsSBC, AAC, LDACSBC
Bluetooth Version5.35.2
Built in MicrophoneYesYes
Dimensions12.6" x 5.7" x 4.9" (320 x 144 x 125 mm)12.6" x 7.3" x 5.9" (321 x 185 x 151 mm)
Drivers2x 46mm tweeters + 1x 79mm x 107mm woofer2x 76mm (3") woofers + 2x 38mm tweeters + 2x passive radiators
EQYes (App + ULT button)3 EQ presets
IP RatingIP67IPX6
Party ModeYes (Party Connect up to 100 speakers)Yes (PartyAdd up to 100 speakers)
Power BankYes (USB-C)Yes (USB-A + USB-C)
Power InputUSB-CUSB-C
StereoYesYes
OmnidirectionalNoNo
TWSYesNo
Weight7.3 lbs / 3.3 kg7.3 lbs / 3.3 kg
Output Power27W80W
Digital Aux InputNoNo
MicroSD Playback-Yes

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The Two Speakers In Full

Sony ULT Field 5: $198 Amazon

Sony ULT Field 5 ranking card

Pros: IP67 rated, dustproof and water resistant. 25 hour battery life. App with 10-band EQ. Party Connect with up to 100 speakers. USB-C in/out for charging your phone.

Cons: Bass not as deep as others in the category, and sound quality overall is just okay. ULT button makes a really loud tone when pressed. Just an okay speaker.

AppYes
Aux InputYes
Battery Life25 hours (Manufacturer specified)
Bluetooth CodecsSBC, AAC, LDAC
Bluetooth Version5.3
Built in MicrophoneYes
Digital Aux InputNo
Dimensions12.6" x 5.7" x 4.9" (320 x 144 x 125 mm)
Drivers2x 46mm tweeters + 1x 79mm x 107mm woofer
EQYes (App + ULT button)
IP RatingIP67
OmnidirectionalNo
Output Power27W
Party ModeYes (Party Connect up to 100 speakers)
Power BankYes (USB-C)
Power InputUSB-C
StereoYes
TWSYes
Weight7.3 lbs / 3.3 kg

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Zealot S97: $65.86 with coupon YZZL10 Aliexpress

Zealot S97 ranking card

Pros: There is nothing else for $48 with that deep of bass and a reasonable tuning

Cons: Doesn’t get very loud compared to other speakers in this class. Short battery life. Pretty heavy. Many say the S67 has deeper bass, but also gets more distorted

AppNo
Aux InputYes
Battery Life12 hours (Manufacturer specified)
Bluetooth CodecsSBC
Bluetooth Version5.2
Built in MicrophoneYes
Digital Aux InputNo
Dimensions12.6" x 7.3" x 5.9" (321 x 185 x 151 mm)
Drivers2x 76mm (3") woofers + 2x 38mm tweeters + 2x passive radiators
EQ3 EQ presets
IP RatingIPX6
MicroSD PlaybackYes
OmnidirectionalNo
Output Power80W
Party ModeYes (PartyAdd up to 100 speakers)
Power BankYes (USB-A + USB-C)
Power InputUSB-C
StereoYes
TWSNo
Weight7.3 lbs / 3.3 kg

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