Short answer: the JBL Flip 6 on measured sound quality, the Ultimate Ears Boom 4 on price. The JBL Flip 6 ranks #12 of 136 medium speakers at $114.95. The Ultimate Ears Boom 4 ranks #88 at $105, $9.95 cheaper.
What the JBL Flip 6 offers: A very neutral speaker, very small, almost pocket size, a huge sound quality leap over the Flip 5. Watch for: Not stereo. Some slight upper mids emphasis. The TL version (made in Vietnam) tweeter can sound somewhat scratchy and doesn’t sound as good as the GG version (made in China)
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 6 when sound quality outweighs the price for you, and the Ultimate Ears Boom 4 when the price outweighs sound quality instead.
Specifications Side By Side
| JBL Flip 6 | Ultimate Ears Boom 4 | |
|---|---|---|
| Price | $114.95 | $105 |
| Ranked | #12 of 136 in Medium Size Portable Bluetooth Speakers | #88 of 136 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | No |
| Bass Extension (-10dB) | 56Hz | - |
| Battery Life | 12 hours (Manufacturer specified) | 15 hours (Manufacturer specified) |
| Built in Microphone | No | No |
| EQ | Yes (3 band) | Yes (via app) |
| IP Rating | IP67 | IP67 |
| Bluetooth Latency | 116ms | - |
| Max Volume | 98dB | 85dBC |
| Party Mode | Yes (PartyBoost up to 100 speakers) | - |
| Power Bank | No | No |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.2 lbs / 544 g | 1.4 lbs / 620 g |
| Bluetooth Codecs | AAC, SBC | - |
| Bluetooth Version | 5.1 | 5.1 |
| Dimensions | 6.9" x 2.7" x 2.8" (176 x 68 x 72 mm) | 7.2" x 2.9" x 2.9" (184 x 73 x 73 mm) |
| Drivers | 44mm x 80mm woofer, 16mm tweeter | 2x 1.57" (40mm) active drivers + 2x 1.81" x 2.57" (46.1 x 65.2mm) passive radiators |
| Power Input | USB-C | USB-C |
| Output Power | 30W | - |
| Digital Aux Input | No | No |
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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 6: $114.95 Amazon B&H Photo Video eBay
Pros: A very neutral speaker, very small, almost pocket size, a huge sound quality leap over the Flip 5.
Cons: Not stereo. Some slight upper mids emphasis. The TL version (made in Vietnam) tweeter can sound somewhat scratchy and doesn’t sound as good as the GG version (made in China)
Full JBL Flip 6 review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 56Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | AAC, SBC |
| Bluetooth Latency | 116ms |
| Bluetooth Version | 5.1 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 6.9" x 2.7" x 2.8" (176 x 68 x 72 mm) |
| Drivers | 44mm x 80mm woofer, 16mm tweeter |
| EQ | Yes (3 band) |
| IP Rating | IP67 |
| Max Volume | 98dB |
| Omnidirectional | No |
| Output Power | 30W |
| Party Mode | Yes (PartyBoost up to 100 speakers) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | Yes |
| Weight | 1.2 lbs / 544 g |
- Links
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Ultimate Ears Boom 4: $105 Amazon eBay
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 →
| App | Yes |
|---|---|
| Aux Input | No |
| Battery Life | 15 hours (Manufacturer specified) |
| Bluetooth Version | 5.1 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 7.2" x 2.9" x 2.9" (184 x 73 x 73 mm) |
| Drivers | 2x 1.57" (40mm) active drivers + 2x 1.81" x 2.57" (46.1 x 65.2mm) passive radiators |
| EQ | Yes (via app) |
| IP Rating | IP67 |
| Max Volume | 85dBC |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.4 lbs / 620 g |
- Links
- Reviews, Comparisons and Sound Samples
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