Short answer: the Soundcore Boom Go 3i. It ranks #2 of 62 small speakers by sound quality (rated 4.4/5) at $59.99 and is still sold new; the Harman Kardon Esquire Mini 2 ranks #57 (rated 2.4/5) and is discontinued, so it is only an option used.
The Soundcore Boom Go 3i is the better-sounding, longer-running choice. An exceptionally rugged 0.8 lbs (380 g) mini speaker with IP68 protection, a floating sound-forward design, app EQ, RGB lighting, a battery display, USB-C power-bank output and Auracast/TWS linking. It is rated for 24 hours of battery against 10 for the Harman Kardon Esquire Mini 2. It is rated IP68, while the Harman Kardon Esquire Mini 2 has no water resistance. It links with other speakers (Auracast), which the Harman Kardon Esquire Mini 2 cannot. The catch: This is still a 15W mono speaker: bass impact and stereo width are limited, and critical listeners may find the upper treble piercing or metallic.
The Harman Kardon Esquire Mini 2 is the lighter choice. Doubles as a hands-free speakerphone and USB power bank. At 0.6 lbs (250 g) it weighs noticeably less than the Soundcore Boom Go 3i at 0.8 lbs (380 g). It keeps a wired aux input, which the Soundcore Boom Go 3i lacks. The catch: Huge lack of bass.
Buy the Soundcore Boom Go 3i. It is rated higher for sound quality and still sold new, while the Harman Kardon Esquire Mini 2 is discontinued.
Want more options? Browse the full Portable Bluetooth rankings.
Specifications Side By Side
| Soundcore Boom Go 3i | Harman Kardon Esquire Mini 2 | |
|---|---|---|
| Price | $59.99 | $100 Discontinued |
| Ranked | #2 of 62 in Small Size Portable Bluetooth Speakers | #57 of 62 in Small Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Battery Life | 24 hours (Manufacturer specified) | 10 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| Built-in Microphone | Yes | Yes |
| EQ | Yes | No |
| IP Rating | IP68 | None |
| Party Mode | Yes (Auracast) | No |
| Power Bank | Yes (USB-C) | Yes (USB-A) |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | Pointing up | Pointing up |
| TWS | Yes | No |
| Weight | 0.8 lbs (380 g) | 0.6 lbs (250 g) |
| Bluetooth Version | 6.0 | 4.2 |
| Amplifier Power | 15W | 8W |
| Dimensions | 4” x 4.2” x 1.8” (102.1 x 105.9 x 45.5 mm) | 5.5” x 3” x 1” (140 x 75.2 x 26.1 mm) |
| Drivers | 25mm tweeter + 42mm woofer + passive radiators | 2x 44.5mm (~1.75”) full-range drivers |
| Maximum SPL | 92dB (Manufacturer specified) | - |
| Digital Aux Input | No | No |
| Lights | Yes | - |
| Strap | Yes (detachable strap) | - |
| Bass Extension (-10dB) | - | ~120Hz |
| Frequency Response | - | 130Hz - 20kHz (Manufacturer specified) |
| Charging Time | - | 3 hours |
Related Speaker Comparisons
More top alternatives to Soundcore Boom Go 3i:
- Soundcore Boom Go 3i vs Tribit Stormbox Micro 2
- Minirig Mini 2 vs Soundcore Boom Go 3i
- Minirig Mini vs Soundcore Boom Go 3i
- Soundcore Boom Go 3i vs Tribit Stormbox Micro
- Soundcore Boom Go 3i vs Tribit Stormbox Micro 3
Prices on this page were last checked October 12, 2026 at 4:13 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 Go 3i: $59.99 Amazon $59.99 AliExpress $133.27 eBay
Pros: An exceptionally rugged 380g mini speaker with IP68 protection, a floating sound-forward design, app EQ, RGB lighting, a battery display, USB-C power-bank output and Auracast/TWS linking. It reaches about 92dB and independent testing finds it lasts nearly six hours at maximum volume with lights and BassUp enabled, matching its demanding claim.
Cons: This is still a 15W mono speaker: bass impact and stereo width are limited, and critical listeners may find the upper treble piercing or metallic. It is directional by design, so the sound changes off-axis, and independent reviews note it lacks a built-in microphone; it is far better for rugged outdoor background music than a large gathering.
Setup: Try out Oluv’s EQ which slightly improves the sound
Full Soundcore Boom Go 3i review and specifications →
| Released | Feb 2026 (8 months ago) |
|---|---|
| Amplifier Power | 15W |
| App | Yes |
| Aux Input | No |
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 6.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 4” x 4.2” x 1.8” (102.1 x 105.9 x 45.5 mm) |
| Drivers | 25mm tweeter + 42mm woofer + passive radiators |
| EQ | Yes |
| IP Rating | IP68 |
| Lights | Yes |
| Maximum SPL | 92dB (Manufacturer specified) |
| Omnidirectional | Pointing up |
| Party Mode | Yes (Auracast) |
| Power Bank | Yes (USB-C) |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (detachable strap) |
| TWS | Yes |
| Weight | 0.8 lbs (380 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Oluv Patreon: SoundCore Boom Go 3i - first look More from Oluv’Sone →
- Techder Audios: Soundcore Boom Go 3i - Soundtest HOW GOOD IS 15W? WITH BASS UP 2.0!? More from techderaudios →
- Storytripper HD: Bose Micro 2 vs Soundcore Boom Go 3i vs Tribit Micro 2 More from storytripperhd →
- TecH Moe: Soundcore Boom Go 3i: The Mini Speaker to Buy! More from TecHMoE →
- Gi Rides: Soundcore Boom Go 3i vs Tribit Stormbox Micro 2 Binaural Audio
- Head-to-Head Comparisons
- Soundcore Boom Go 3i vs Tribit Stormbox Micro 2
- Soundcore Boom Go 3i vs Minirig Mini 2
- Soundcore Boom Go 3i vs Minirig Mini
- Soundcore Boom Go 3i vs Tribit Stormbox Micro
- Soundcore Boom Go 3i vs Tribit Stormbox Micro 3
- Soundcore Boom Go 3i vs Teufel Boomster Go
- Soundcore Boom Go 3i vs Soundcore Mini 3 Pro
- Soundcore Boom Go 3i vs Soundcore Mini 3
- See all 61 comparisons
Harman Kardon Esquire Mini 2: $100 Discontinued eBay
Pros: Doubles as a hands-free speakerphone and USB power bank. Metal grille with a faux-leather back and a small kickstand. 8-10 hour battery life. Measured bass extension of ~120Hz (-10dB).
Cons: Huge lack of bass. Sounds very thin and tinny at high volume. Discontinued.
Full Harman Kardon Esquire Mini 2 review and specifications →
| Released | 2018 (8 years ago) |
|---|---|
| Amplifier Power | 8W |
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | ~120Hz |
| Battery Life | 10 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Charging Time | 3 hours |
| Digital Aux Input | No |
| Dimensions | 5.5” x 3” x 1” (140 x 75.2 x 26.1 mm) |
| Drivers | 2x 44.5mm (~1.75”) full-range drivers |
| EQ | No |
| Frequency Response | 130Hz - 20kHz (Manufacturer specified) |
| IP Rating | None |
| Omnidirectional | Pointing up |
| Party Mode | No |
| Power Bank | Yes (USB-A) |
| Power Input | USB-C |
| Stereo | No |
| TWS | No |
| Weight | 0.6 lbs (250 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Harman Kardon Esquire Mini 2 vs Harman Kardon Neo
- Harman Kardon Esquire Mini 2 vs Lenovo 700 Ultraportable Bluetooth Speaker
- Harman Kardon Esquire Mini 2 vs Xiaomi Sound Pocket
- Harman Kardon Esquire Mini 2 vs Sony SRS-XB12
- Harman Kardon Esquire Mini 2 vs Noxgear 39g
- Harman Kardon Esquire Mini 2 vs Xiaomi Mi Portable Mini
- Harman Kardon Esquire Mini 2 vs JBL Clip 3
- Harman Kardon Esquire Mini 2 vs JBL Clip
- See all 29 comparisons