Short answer: the JBL Flip 5. It ranks #62 of 136 medium speakers by sound quality at $64.97; the Ultimate Ears Boom 4 ranks #88 and costs $105, which makes this an easy call rather than a real tradeoff.
What the JBL Flip 5 offers: Compact and light (1.1 lb) with a carry lanyard. Charges via USB-C, topping off in about 2.5 hours. IP67 rated. Watch for: Not stereo. Boosted upper bass. Piercing sound when turned up. Peaky lower treble at higher volumes.
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 5. It ranks higher for sound quality than the Ultimate Ears Boom 4 and costs less, so the other one has nothing left to offer.
Specifications Side By Side
| JBL Flip 5 | Ultimate Ears Boom 4 | |
|---|---|---|
| Price | $64.97 Discontinued | $105 |
| Ranked | #62 of 136 in Medium Size Portable Bluetooth Speakers | #88 of 136 in Medium Size Portable Bluetooth Speakers |
| Bass Extension (-10dB) | 59Hz | - |
| Battery Life | 12 hours (Manufacturer specified) | 15 hours (Manufacturer specified) |
| Bluetooth Latency | 200ms | - |
| Max Volume | 92dB | 85dBC |
| Party Mode | Yes (PartyBoost up to 100 speakers) | - |
| Weight | 1.2 lbs / 540 g | 1.4 lbs / 620 g |
| Bluetooth Version | 4.2 | 5.1 |
| Drivers | 1x 44x80mm fullrange | 2x 1.57" (40mm) active drivers + 2x 1.81" x 2.57" (46.1 x 65.2mm) passive radiators |
| Dimensions | 7.1" x 2.7" x 2.9" (181 x 69 x 74 mm) | 7.2" x 2.9" x 2.9" (184 x 73 x 73 mm) |
| Frequency Response | 65Hz - 20kHz (Manufacturer specified) | - |
| Output Power | 20W RMS | - |
| Aux Input | No | No |
| Bluetooth Codecs | SBC | - |
| Built in Microphone | No | No |
| EQ | Yes (via JBL app, sunsetted in 2024) | Yes (via app) |
| IP Rating | IPX7 | IP67 |
| Discontinued | Yes | - |
| Digital Aux Input | No | No |
| Omnidirectional | No | No |
| App | - | Yes |
| Power Input | - | USB-C |
| Stereo | - | Yes |
| TWS | - | Yes |
| Power Bank | - | No |
Related Speaker Comparisons
Other pairings from the same speaker class worth checking:
- JBL Flip 4 vs JBL Grip
- JBL Flip 4 vs Sony XB23
- JBL Flip 4 vs Ultimate Ears Roll 2
- JBL Flip 5 vs Bose SoundLink Color II
- Ultimate Ears Boom 4 vs Tribit Stormbox
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 5: $64.97 Discontinued Amazon eBay
Pros: Compact and light (1.1 lb) with a carry lanyard. Charges via USB-C, topping off in about 2.5 hours. IP67 rated.
Cons: Not stereo. Boosted upper bass. Piercing sound when turned up. Peaky lower treble at higher volumes. Discontinued.
Full JBL Flip 5 review and specifications →
| Aux Input | No |
|---|---|
| Bass Extension (-10dB) | 59Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 200ms |
| Bluetooth Version | 4.2 |
| Built in Microphone | No |
| Digital Aux Input | No |
| Dimensions | 7.1" x 2.7" x 2.9" (181 x 69 x 74 mm) |
| Discontinued | Yes |
| Drivers | 1x 44x80mm fullrange |
| EQ | Yes (via JBL app, sunsetted in 2024) |
| Frequency Response | 65Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Max Volume | 92dB |
| Omnidirectional | No |
| Output Power | 20W RMS |
| Party Mode | Yes (PartyBoost up to 100 speakers) |
| Weight | 1.2 lbs / 540 g |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Beoplay A1 Denon 250bt JBL Flip 5 Anker Flare 2 More from alanrossreviews →
- DLX Willington: JBL Flip 5 vs Flip 4 :Sound Battle: Almost to the size of the JBL Charge 3? More from DLXWillington →
- Alan Ross Reviews: Sony XB23 vs JBL Flip 5 v Tribit Maxsound Plus
- Techder Audios: #JBL Flip 5 VS #JBL Flip Essential “IMPRESSIVE COMPARISON!?” More from techderaudios →
- Alan Ross Reviews: Marshall Emberton vs JBL Flip 5 & Soundcore Boost - true stereophonic 🤓
- Reddit Search for JBL Flip 5 Review
- Head-to-Head Comparisons
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
- Head-to-Head Comparisons
- Ultimate Ears Boom 4 vs Ultimate Ears Boom 3
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom
- Ultimate Ears Boom 4 vs Klipsch Groove/Heritage Groove
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom 2
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom 3
- Ultimate Ears Boom 4 vs Ultimate Ears Wonderboom 4
- Ultimate Ears Boom 4 vs Sony SRS-XE300
- Ultimate Ears Boom 4 vs Tribit Stormbox
- See all 74 comparisons