JBL Flip 4 vs Ultimate Ears Boom 4

Last updated: August 28, 2026

Short answer: the JBL Flip 4. It ranks #63 of 136 medium speakers by sound quality at $70; the Ultimate Ears Boom 4 ranks #88 and costs $105, so there is not much of a tradeoff to weigh.

What the JBL Flip 4 offers: Less bass than a Flip 5. Peaky lower treble. Watch for: Battery failures are common.

What the Ultimate Ears Boom 4 offers: IP67 rated, floats, and finally charges via USB-C instead of the older Booms’ Micro-USB. 15 hour battery. Customizable EQ and speaker-pairing via the UE app. Watch for: Not much improvement over the old ones. Weak bass extension and thuddy bass. Gets distorted above 90%

Buy the JBL Flip 4. It ranks higher for sound quality than the Ultimate Ears Boom 4 and costs less, which settles it without a real tradeoff to make.

Buy the JBL Flip 4 at Amazon ($70) →Buy the Ultimate Ears Boom 4 at Amazon ($105) →

JBL Flip 4 vs Ultimate Ears Boom 4

Specifications Side By Side

JBL Flip 4 Ultimate Ears Boom 4
Price$70 Discontinued$105
Ranked#63 of 136 in Medium Size Portable Bluetooth Speakers#88 of 136 in Medium Size Portable Bluetooth Speakers
Aux InputYesNo
Bass Extension (-10dB)66Hz-
Battery Life12 hours (Manufacturer specified)15 hours (Manufacturer specified)
Bluetooth Latency300ms-
Party ModeYes (Connect+ up to 100 speakers)-
Power InputMicro USBUSB-C
TWSNoYes
Weight1.1 lbs / 510 g1.4 lbs / 620 g
Bluetooth Version4.25.1
Drivers2x 40mm fullrange2x 1.57" (40mm) active drivers + 2x 1.81" x 2.57" (46.1 x 65.2mm) passive radiators
Dimensions6.9" x 2.8" x 2.6" (175 x 70 x 65 mm)7.2" x 2.9" x 2.9" (184 x 73 x 73 mm)
Frequency Response70Hz - 20kHz (Manufacturer specified)-
Output Power16W RMS-
IP RatingIPX7IP67
DiscontinuedYes-
Max Volume92dB85dBC
Digital Aux InputNoNo
OmnidirectionalNoNo
App-Yes
Stereo-Yes
EQ-Yes (via app)
Built in Microphone-No
Power Bank-No
Buy the JBL Flip 4 at Amazon ($70) →Buy the Ultimate Ears Boom 4 at Amazon ($105) →

Other pairings from the same speaker class worth checking:

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 Flip 4: $70 Discontinued Amazon eBay

JBL Flip 4 ranking card

Pros: Less bass than a Flip 5. Peaky lower treble.

Cons: Battery failures are common. Discontinued.

Full JBL Flip 4 review and specifications →

Aux InputYes
Bass Extension (-10dB)66Hz
Battery Life12 hours (Manufacturer specified)
Bluetooth Latency300ms
Bluetooth Version4.2
Digital Aux InputNo
Dimensions6.9" x 2.8" x 2.6" (175 x 70 x 65 mm)
DiscontinuedYes
Drivers2x 40mm fullrange
Frequency Response70Hz - 20kHz (Manufacturer specified)
IP RatingIPX7
Max Volume92dB
OmnidirectionalNo
Output Power16W RMS
Party ModeYes (Connect+ up to 100 speakers)
Power InputMicro USB
TWSNo
Weight1.1 lbs / 510 g
Check current price at Amazon ($70) →Search eBay for JBL Flip 4 →

Ultimate Ears Boom 4: $105 Amazon eBay

Ultimate Ears Boom 4 ranking card

Pros: IP67 rated, floats, and finally charges via USB-C instead of the older Booms’ Micro-USB. 15 hour battery. Customizable EQ and speaker-pairing via the UE app.

Cons: Not much improvement over the old ones. Weak bass extension and thuddy bass. Gets distorted above 90%

Full Ultimate Ears Boom 4 review and specifications →

AppYes
Aux InputNo
Battery Life15 hours (Manufacturer specified)
Bluetooth Version5.1
Built in MicrophoneNo
Digital Aux InputNo
Dimensions7.2" x 2.9" x 2.9" (184 x 73 x 73 mm)
Drivers2x 1.57" (40mm) active drivers + 2x 1.81" x 2.57" (46.1 x 65.2mm) passive radiators
EQYes (via app)
IP RatingIP67
Max Volume85dBC
OmnidirectionalNo
Power BankNo
Power InputUSB-C
StereoYes
TWSYes
Weight1.4 lbs / 620 g
Check current price at Amazon ($105) →Search eBay for Ultimate Ears Boom 4 →