Short answer: the JBL Charge 3. It ranks #67 of 136 medium speakers by sound quality at $80; the KEF Muo gen2 ranks #73 and costs $249.99, so there is not much of a tradeoff to weigh.
On the JBL Charge 3 side: Doubles as a 6000mAh power bank for USB devices. ~20 hour battery life. Set against that: Less clarity than the Flip 4. Battery failures are common.
What the KEF Muo gen2 gets right: KEF seemed to have fixed the rolled off treble and overall balance. Watch for: Lacking deeper bass. Very thuddy bass. Appears to be the exact same hardware but with updated tuning.
Buy the JBL Charge 3. It ranks higher for sound quality than the KEF Muo gen2 and costs less, so there is no real case for the other one.

Specifications Side By Side
| JBL Charge 3 | KEF Muo gen2 | |
|---|---|---|
| Price | $80 Discontinued | $249.99 |
| Ranked | #67 of 136 in Medium Size Portable Bluetooth Speakers | #73 of 136 in Medium Size Portable Bluetooth Speakers |
| Aux Input | Yes | - |
| Bass Extension (-10dB) | 63Hz | - |
| Battery Life | 20 hours (Manufacturer specified) | 24 hours (Manufacturer specified) |
| Max Volume | 100dB | 90dB |
| Party Mode | Yes (Connect+ up to 100 speakers) | Yes (Auracast) |
| Power Bank | Yes (USB-A, 5V/2A) | - |
| Power Input | Micro USB | - |
| Weight | 1.8 lbs / 800 g | 1.6 lbs / 740 g |
| Bluetooth Version | 4.1 | 5.4 |
| Drivers | 2x 50mm fullrange | 1x 58x117mm racetrack woofer, 1x 20mm tweeter |
| Dimensions | 8.4" x 3.5" x 3.5" (213 x 88 x 88 mm) | 8.5" x 3.2" x 2.3" (216 x 82 x 59 mm) |
| Frequency Response | 65Hz - 20kHz (Manufacturer specified) | 43Hz - 20kHz (Manufacturer specified) |
| Output Power | 20W RMS | 40W |
| App | Yes (JBL Connect) | Yes |
| Built in Microphone | Yes | - |
| Bluetooth Codecs | SBC | SBC, aptX Adaptive up to 48 KHz 24 bit |
| EQ | No | - |
| IP Rating | IPX7 | IP67 |
| Discontinued | Yes | - |
| Digital Aux Input | No | Yes (USB-C) |
| Omnidirectional | No | No |
| Stereo | - | Yes |
| TWS | - | Yes |
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More useful head-to-heads from the same speaker class:
- JBL Charge 2 vs Sonos Roam
- Sonos Roam vs Sony ULT Field 3
- Sonos Roam 2 vs Sonos Roam
- KEF Muo gen2 vs Sony ULT Field 1
- JBL Charge Essential vs KEF Muo gen2
The Two Speakers In Full
JBL Charge 3: $80 Discontinued
Pros: Doubles as a 6000mAh power bank for USB devices. ~20 hour battery life. IPX7 rated; built-in noise/echo-cancelling speakerphone.
Cons: Less clarity than the Flip 4. Battery failures are common. Discontinued.
Full JBL Charge 3 review and specifications →
| App | Yes (JBL Connect) |
|---|---|
| Aux Input | Yes |
| Bass Extension (-10dB) | 63Hz |
| Battery Life | 20 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 4.1 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 8.4" x 3.5" x 3.5" (213 x 88 x 88 mm) |
| Discontinued | Yes |
| Drivers | 2x 50mm fullrange |
| EQ | No |
| Frequency Response | 65Hz - 20kHz (Manufacturer specified) |
| IP Rating | IPX7 |
| Max Volume | 100dB |
| Omnidirectional | No |
| Output Power | 20W RMS |
| Party Mode | Yes (Connect+ up to 100 speakers) |
| Power Bank | Yes (USB-A, 5V/2A) |
| Power Input | Micro USB |
| Weight | 1.8 lbs / 800 g |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: JBL Charge 5 vs JBL Charge 4 and Charge 3 - best JBL charge 5 review 2021?
- Alan Ross Reviews: JBL Flip 6 vs JBL Charge 4 and JBL Charge 3 - small one or a large one? 🤷♂️
- DLX Willington: JBL Flip 5 vs Flip 4 :Sound Battle: Almost to the size of the JBL Charge 3?
- EnforcerMan: JBL CHARGE 3 VS TREBLAB HD77 - FULL REVIEW
- Reddit Search for JBL Charge 3 Review
- Head-to-Head Comparisons
KEF Muo gen2: $249.99 Amazon
Pros: KEF seemed to have fixed the rolled off treble and overall balance
Cons: Lacking deeper bass. Very thuddy bass. Appears to be the exact same hardware but with updated tuning. Bass distorts as volume increases, and the claimed 43Hz extension is really only audible at low listening volumes, with a few seconds of lag after volume changes. Loses most of its bass off-axis. Customer reviews are mixed, ranging from praise for detail at low volume to complaints of a boxy, hollow sound.
Full KEF Muo gen2 review and specifications →
| App | Yes |
|---|---|
| Battery Life | 24 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC, aptX Adaptive up to 48 KHz 24 bit |
| Bluetooth Version | 5.4 |
| Digital Aux Input | Yes (USB-C) |
| Dimensions | 8.5" x 3.2" x 2.3" (216 x 82 x 59 mm) |
| Drivers | 1x 58x117mm racetrack woofer, 1x 20mm tweeter |
| Frequency Response | 43Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP67 |
| Max Volume | 90dB |
| Omnidirectional | No |
| Output Power | 40W |
| Party Mode | Yes (Auracast) |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.6 lbs / 740 g |
As an eBay Partner, we may be compensated if you make a purchase.
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons

