Short answer: the Soundcore Boom 3i. It ranks #29 of 144 medium speakers by sound quality, rated 4.0/5, at $118.99. The Teufel Rockster Go 2 ranks #75, rated 3.2/5, at $99.99, $19 cheaper, which does not close the gap in sound quality.
Why pick 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. Watch for: 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 Teufel Rockster Go 2 does well: At 0.74 kg, the IP67 Rockster Go 2 is genuinely easy to carry, and its claimed 28-hour battery life, USB-C fast charging, stereo pairing, and tripod mount suit outdoor use. The catch: There is no companion app or 3.5 mm input.
Buy the Soundcore Boom 3i. It is rated higher for sound quality, and the $19 you would save on the Teufel Rockster Go 2 does not close the gap.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Soundcore Boom 3i | Teufel Rockster Go 2 | |
|---|---|---|
| Price | $118.99 | $99.99 |
| Ranked | #29 of 144 in Medium Size Portable Bluetooth Speakers | #75 of 144 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes (Teufel Go) |
| Aux Input | No | No |
| Bass Extension (-10dB) | 56Hz | - |
| Battery Life | 16 hours (Manufacturer specified) | 15 hours, 28 with Eco Mode (Manufacturer specified) |
| EQ | Yes | Yes |
| IP Rating | IP68 | IP67 |
| Party Mode | No | Yes (Party Link, up to 100 speakers) |
| Power Input | USB-C | USB-C |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Bluetooth Version | 5.3 | - |
| Dimensions | 8.3” x 3.3” x 3.1” (210 x 85 x 78.5 mm) | 8.3” x 4.3” x 2.4” (211 x 109 x 61 mm) |
| Drivers | 94mm woofer + tweeter | 2x 50mm wide-band drivers + 1x 64mm passive radiator |
| Weight | 1.7 lbs (783 g) | 1.6 lbs (735 g) |
| Amplifier Power | 50W | 8W |
| Bluetooth Codecs | SBC, AAC | SBC, AAC |
| Built-in Microphone | Yes | No |
| Digital Aux Input | No | Yes (USB-C sound card) |
| Lights | Yes | - |
| Strap | Yes (detachable strap) | Yes (detachable strap) |
| Discontinued | - | No |
| Power Bank | - | No |
| USB Playback | - | No |
| Frequency Response | - | 60Hz - 20kHz (Manufacturer specified) |
| Charging Time | - | 2.5 hours (Manufacturer specified) |
Related Speaker Comparisons
How Soundcore Boom 3i compares with other leading options:
- Soundcore Boom 3i vs Earfun Uboom L
- Soundcore Motion 300 vs Soundcore Boom 3i
- Soundcore Motion+ vs Soundcore Boom 3i
- Soundcore Boost “upgraded” 2021 vs Soundcore Boom 3i
- Soundcore Boom 3i vs Minirig 4
Prices on this page were last checked September 26, 2026 at 11:14 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.
As an eBay Partner, we may be compensated if you make a purchase.
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 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
- See all 116 comparisons
Teufel Rockster Go 2: $99.99 Amazon eBay
Older model: the Teufel Rockster Go (rated 2.6/5).
Pros: At 0.74 kg, the IP67 Rockster Go 2 is genuinely easy to carry, and its claimed 28-hour battery life, USB-C fast charging, stereo pairing, and tripod mount suit outdoor use. Independent listening found a balanced, clear midrange and tuneful bass at sensible levels.
Cons: There is no companion app or 3.5 mm input. Reviewers found it loses some definition at maximum volume, and the claimed battery figure is optimistic for loud outdoor playback.
Full Teufel Rockster Go 2 review and specifications →
| Amplifier Power | 8W |
|---|---|
| App | Yes (Teufel Go) |
| Aux Input | No |
| Battery Life | 15 hours, 28 with Eco Mode (Manufacturer specified) |
| Bluetooth Codecs | SBC, AAC |
| Built-in Microphone | No |
| Charging Time | 2.5 hours (Manufacturer specified) |
| Digital Aux Input | Yes (USB-C sound card) |
| Dimensions | 8.3” x 4.3” x 2.4” (211 x 109 x 61 mm) |
| Discontinued | No |
| Drivers | 2x 50mm wide-band drivers + 1x 64mm passive radiator |
| EQ | Yes |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP67 |
| Omnidirectional | No |
| Party Mode | Yes (Party Link, up to 100 speakers) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | Yes (detachable strap) |
| TWS | Yes |
| USB Playback | No |
| Weight | 1.6 lbs (735 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Teufel Rockster Go 2 vs JBL Grip
- Teufel Rockster Go 2 vs Klipsch Nashville
- Teufel Rockster Go 2 vs Sony ULT Field 1
- Teufel Rockster Go 2 vs Treblab HD77
- Teufel Rockster Go 2 vs Tribit Stormbox 2
- Teufel Rockster Go 2 vs Sony ULT Field 3
- Teufel Rockster Go 2 vs Ultimate Ears Wonderboom 4
- Teufel Rockster Go 2 vs Ultimate Ears Boom 4
- See all 17 comparisons