Short answer: the JBL Flip Essential 2. It ranks #75 of 157 medium speakers by sound quality (rated 3.3/5); the Boat Stone 350 ranks #135 (rated 2.3/5).
The JBL Flip Essential 2 is the better-sounding, longer-running pick. Essentially a Flip 5 in a new shell: the same single 44 x 80mm racetrack driver and 20W amplifier, rated down to 65Hz. It is rated for 10 hours of battery against 6 for the Boat Stone 350. Watch for: There is no tweeter, and side by side comparisons found it does not sound as good as the Flip 6, with less bass; its bass stops growing above about 70% volume, so turning it up mostly adds loudness, not weight.
The case for the Boat Stone 350: 10W cylindrical stereo speaker with dual passive radiators, IPX7 water resistance, microSD card slot, and 3.5mm aux input. It keeps a wired aux input, which the JBL Flip Essential 2 lacks. It has an adjustable EQ, which the JBL Flip Essential 2 lacks. It plays in stereo from a single unit, unlike the JBL Flip Essential 2. Watch for: Midrange peaks with rolled-off treble.
Buy the JBL Flip Essential 2. It is rated higher for sound quality than the Boat Stone 350.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| JBL Flip Essential 2 | Boat Stone 350 | |
|---|---|---|
| Price | $85.90 | - |
| Ranked | #75 of 157 in Medium Size Portable Bluetooth Speakers | #135 of 157 in Medium Size Portable Bluetooth Speakers |
| Drivers | 1x 44x80mm racetrack fullrange + 2x passive radiators | 2x 20mm tweeters + 2x 45mm drivers |
| Amplifier Power | 20W RMS | 10W |
| Battery Life | 10 hours (Manufacturer specified) | 6 hours (Manufacturer specified) |
| IP Rating | IPX7 | IPX7 |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.1 | 5.0 |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Party Mode | No | - |
| TWS | No | Yes |
| App | No | No |
| EQ | No | Yes (multiple modes) |
| Stereo | No | Yes |
| Omnidirectional | No | No |
| Aux Input | No | Yes |
| Digital Aux Input | No | No |
| Power Bank | No | - |
| Power Input | USB-C | USB-C |
| Weight | 1.1 lbs (520 g) | 0.9 lbs (426 g) |
| Dimensions | 6.9” x 2.7” x 2.8” (175 x 68 x 70 mm) | 3.5” x 7.1” (90 x 180 mm) |
| Frequency Response | 65Hz - 20kHz (Manufacturer specified) | - |
| Bass Extension (-10dB) | - | 87Hz |
| MicroSD Playback | - | Yes |
| Built-in Microphone | - | Yes |
| Strap | - | No |
Related Speaker Comparisons
More worthwhile head-to-heads for JBL Flip Essential 2:
- Earfun Uboom L vs JBL Flip Essential 2
- Soundcore Motion 300 vs JBL Flip Essential 2
- Minirig 4 vs JBL Flip Essential 2
- B&O Beosound A1 2nd gen vs JBL Flip Essential 2
- JBL Charge 6 vs JBL Flip Essential 2
Prices on this page were last checked October 2, 2026 at 10:18 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 Essential 2: $85.90 Amazon eBay
Older model: the JBL Flip Essential (ranked lower, rated 3.2/5).
Pros: Essentially a Flip 5 in a new shell: the same single 44 x 80mm racetrack driver and 20W amplifier, rated down to 65Hz. In a side by side loudness test it got louder than the JBL Grip, and listeners comparing it with the Marshall Emberton found it more open sounding and clearer. IPX7 waterproof, 520 g, USB-C charging and Bluetooth 5.1 with two phones connected at once.
Cons: There is no tweeter, and side by side comparisons found it does not sound as good as the Flip 6, with less bass; its bass stops growing above about 70% volume, so turning it up mostly adds loudness, not weight. No app, no EQ, no PartyBoost or stereo pairing, a claimed 10 hours of battery, and IPX7 covers water but not dust.
Full JBL Flip Essential 2 review and specifications →
| Amplifier Power | 20W RMS |
|---|---|
| App | No |
| Aux Input | No |
| Battery Life | 10 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.1 |
| Digital Aux Input | No |
| Dimensions | 6.9” x 2.7” x 2.8” (175 x 68 x 70 mm) |
| Drivers | 1x 44x80mm racetrack fullrange + 2x passive radiators |
| EQ | No |
| Frequency Response | 65Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| TWS | No |
| Weight | 1.1 lbs (520 g) |
- Links
- Reviews, Comparisons and Sound Samples
- AudioTribe: JBL Flip 6 vs JBL Flip Essential 2 FULL TEARDOWN in Just 15 Minutes!
- Speaker Fan: JBL Flip 6 VS JBL Flip Essential 2 VS JBL Grip Loudness Test - Which Is Louder?
- HQ AUDIO Exchange: JBL Flip Essential 2 vs. Flip 6 | Bass Sound Test!
- Cristian Catalin’s Sound&Video: JBL Flip Essential 2 VS Marshall Emberton - sound comparison
- Angelicaaudio: Mini JBL Flip Essential 2 vs. JBL Charge 5 Bluetooth Speaker Review
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Boat Stone 350 eBay
Pros: 10W cylindrical stereo speaker with dual passive radiators, IPX7 water resistance, microSD card slot, and 3.5mm aux input. Measured bass extension of 87Hz (-10dB).
Cons: Midrange peaks with rolled-off treble. Bass extension limited below 87Hz.
Full Boat Stone 350 review and specifications →
| Amplifier Power | 10W |
|---|---|
| App | No |
| Aux Input | Yes |
| Bass Extension (-10dB) | 87Hz |
| Battery Life | 6 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.0 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 3.5” x 7.1” (90 x 180 mm) |
| Drivers | 2x 20mm tweeters + 2x 45mm drivers |
| EQ | Yes (multiple modes) |
| IP Rating | IPX7 |
| MicroSD Playback | Yes |
| Omnidirectional | No |
| Power Input | USB-C |
| Stereo | Yes |
| Strap | No |
| TWS | Yes |
| Weight | 0.9 lbs (426 g) |
- Links
- 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
- Boat Stone 350 vs Boat Stone 352
- Boat Stone 350 vs Doss Soundbox Pro
- Boat Stone 350 vs Marshall Emberton II
- Boat Stone 350 vs Marshall Emberton III
- Boat Stone 350 vs Ultimate Ears Boom 4
- Boat Stone 350 vs Ultimate Ears Wonderboom 4
- Boat Stone 350 vs Soundcore 2
- Boat Stone 350 vs Sony ULT Field 1
- See all 29 comparisons