Short answer: the Soundcore Boom 3i. It ranks #29 of 150 medium speakers by sound quality, rated 4.0/5, at $118.99. The Doss E-Go II ranks #124, rated 2.5/5, at $39.90, $79.09 cheaper, not enough of a saving to outweigh the sound-quality gap.
The case for the Soundcore Boom 3i: Looks to be designed as a direct competitor to the Charge 5 with a very similar sound profile, warm tuned with boosted bass. The catch: Not quite as good as a Charge 5, doesn’t go quite as loud or sound quite as balanced, but very very close.
What the Doss E-Go II does well: Very portable (water bottle sized), truly waterproof (IPX6), 12-hour battery life, excellent value for money, fast Bluetooth pairing. The catch: Horribly bad unless turned up, still not great.
Buy the Soundcore Boom 3i. It is rated higher for sound quality, and the $79.09 saving on the Doss E-Go II is not enough to make up the difference.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Soundcore Boom 3i | Doss E-Go II | |
|---|---|---|
| Price | $118.99 | $39.90 |
| Ranked | #29 of 150 in Medium Size Portable Bluetooth Speakers | #124 of 150 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 56Hz | 120Hz |
| Battery Life | 16 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| EQ | Yes | No |
| IP Rating | IP68 | IPX6 |
| Party Mode | No | - |
| Power Input | USB-C | Micro USB |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | No |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 4.1 |
| Dimensions | 8.3” x 3.3” x 3.1” (210 x 85 x 78.5 mm) | 7.8” x 2.5” x 2” (198 x 63 x 51 mm) |
| Drivers | 94mm woofer + tweeter | 2x 6W full-range drivers + 1x passive radiator |
| Weight | 1.7 lbs (783 g) | 0.9 lbs (399 g) |
| Amplifier Power | 50W | 12W |
| Bluetooth Codecs | SBC, AAC | SBC (inferred; additional codecs unverified) |
| Built-in Microphone | Yes | Yes |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Strap | Yes (detachable strap) | Yes (strap) |
| MicroSD Playback | - | Yes |
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Prices on this page were last checked September 30, 2026 at 2:57 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
Soundcore Boom 3i: $118.99 Amazon B&H Photo Video eBay
Pros: Looks to be designed as a direct competitor to the Charge 5 with a very similar sound profile, warm tuned with boosted bass. Better value for the money than the Charge 5. Measured bass extension of 56Hz (-10dB).
Cons: Not quite as good as a Charge 5, doesn’t go quite as loud or sound quite as balanced, but very very close. An earlier firmware version had some bass distortion, update your firmware in the Soundcore App
Full Soundcore Boom 3i review and specifications →
| Amplifier Power | 50W |
|---|---|
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 56Hz |
| Battery Life | 16 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC |
| Bluetooth Version | 5.3 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 8.3” x 3.3” x 3.1” (210 x 85 x 78.5 mm) |
| Drivers | 94mm woofer + tweeter |
| EQ | Yes |
| IP Rating | IP68 |
| Lights | Yes |
| Omnidirectional | No |
| Party Mode | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (detachable strap) |
| TWS | Yes |
| Weight | 1.7 lbs (783 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Soundcore Boom 3i vs JBL Charge 5
- Soundcore Boom 3i vs JBL Charge 5 Wifi
- Soundcore Boom 3i vs Cleer Audio Scene
- Soundcore Boom 3i vs Teufel Rockster XS
- Soundcore Boom 3i vs Bogasing G4
- Soundcore Boom 3i vs Tribit Xsound Plus 2
- Soundcore Boom 3i vs Harman Kardon Luna
- Soundcore Boom 3i vs Bose Soundlink Flex 2nd gen
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Doss E-Go II: $39.90 Amazon eBay
Pros: Very portable (water bottle sized), truly waterproof (IPX6), 12-hour battery life, excellent value for money, fast Bluetooth pairing. Measured bass extension of 120Hz (-10dB).
Cons: Horribly bad unless turned up, still not great
Full Doss E-Go II review and specifications →
| Amplifier Power | 12W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 120Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 4.1 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.8” x 2.5” x 2” (198 x 63 x 51 mm) |
| Drivers | 2x 6W full-range drivers + 1x passive radiator |
| EQ | No |
| IP Rating | IPX6 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | Micro USB |
| Stereo | Yes |
| Strap | Yes (strap) |
| TWS | No |
| Weight | 0.9 lbs (399 g) |
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons
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