These are not really the same size class, and that is the honest framing here. The Bose Soundlink Flex ranks #36 of 144 medium speakers by sound quality at $79.99; the JBL Go 3 ranks #26 of 47 small speakers by sound quality at $39.95.
Why pick the Bose Soundlink Flex: IP67 rated; rugged enough to survive drops from several feet and floats. The catch: Not stereo.
The case for the JBL Go 3: Genuinely pocket-sized at 209g. The tradeoff: Not much bass at all, strange mids peak.
Buy the Bose Soundlink Flex at $79.99 if you want a medium speaker. Buy the JBL Go 3 at $39.95 if you want a small speaker instead.
There is a real battery-life gap here: the Bose Soundlink Flex is rated for 12 hours, the JBL Go 3 only 5 hours.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Specifications Side By Side
| Bose Soundlink Flex | JBL Go 3 | |
|---|---|---|
| Price | $79.99 | $39.95 |
| Ranked | #36 of 144 in Medium Size Portable Bluetooth Speakers | #26 of 47 in Small Size Portable Bluetooth Speakers |
| App | Yes | No |
| Bass Extension (-10dB) | 56Hz | 87Hz |
| Battery Life | 12 hours (Manufacturer specified) | 5 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | No | No |
| IP Rating | IP67 | IP67 |
| Bluetooth Latency | 33ms | - |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | 88dB (measured by Alan Ross Reviews) |
| Party Mode | Yes (Bose Party mode) | No |
| Power Input | USB-C | USB-C |
| Stereo | No | No |
| Omnidirectional | No | Pointing up |
| TWS | Yes | No |
| Weight | 1.3 lbs (589 g) | 0.5 lbs (209 g) |
| Bluetooth Version | 4.2 | 5.1 |
| Dimensions | 7.9” x 3.5” x 2” (201 x 90 x 52 mm) | 3.4” x 2.7” x 1.6” (86 x 69 x 40 mm) |
| Drivers | 1x 60mm full-range driver + 2x passive radiators | 36mm full-range driver |
| Digital Aux Input | No | No |
| Bluetooth Codecs | SBC | SBC |
| Aux Input | No | No |
| Strap | Yes (built-in loop) | Yes (built-in loop) |
| Power Bank | - | No |
| Frequency Response | - | 110Hz - 20kHz (Manufacturer specified) |
| Charging Time | - | 2.5 hours |
| Amplifier Power | - | 4.2W |
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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.
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The Two Speakers In Full
Bose Soundlink Flex: $79.99 Amazon eBay
Newer model: the Bose Soundlink Flex 2nd gen, rated 3.8/5.
Pros: IP67 rated; rugged enough to survive drops from several feet and floats. Around 12 hours of battery at moderate volume. Measured bass extension of 56Hz (-10dB).
Cons: Not stereo. Warm sounding with overly boosted bass which drowns out midrange detail
Full Bose Soundlink Flex review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 56Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 33ms |
| Bluetooth Version | 4.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 7.9” x 3.5” x 2” (201 x 90 x 52 mm) |
| Drivers | 1x 60mm full-range driver + 2x passive radiators |
| EQ | No |
| IP Rating | IP67 |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| Party Mode | Yes (Bose Party mode) |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (built-in loop) |
| TWS | Yes |
| Weight | 1.3 lbs (589 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Joy & Oluv’Sone: Bose Soundlink Flex 2nd gen vs Flex More from Oluv’Sone →
- Alan Ross Reviews: Bose Soundlink Flex Review! vs JBL Flip 6 and JBL Charge 5. Travel heaven?? 🤞 More from alanrossreviews →
- Joy & Oluv’Sone: Bose Soundlink Flex 2nd gen vs Flex
- Alan Ross Reviews: Beats Pill vs Harman Luna vs Bose Flex vs Soundcore Motion Plus
- Alan Ross Reviews: Tribit Xsound Mega vs the world! (JBL Charge 5, Bose Flex, Sony XB33, LG PL7) 👍
- Alan Ross Reviews: Bose Soundlink Flex vs Soundcore Boost vs Bogasing M4 - cheap or Bose?
- Alan Ross Reviews: Tribit Stormbox Flow has deeper bass than the Bose Flex but………..
- Jay’s Straight Up Reviews & More: Tribit Stormbox Flow vs Soundcore Motion 300 (LDAC) 😵 Budget Bose Soundlink Flex "Inspired" Speakers More from JaysStraightUpReviews →
- Oluv Patreon: Soundcore Motion 300 = Bose Soundlink Flex = Earfun UBoom L?
- Alan Ross Reviews: Bose Soundlink Flex or JBL Flip 6 (eq adjusted) or Denon Envaya - best speaker for travel!
- Alan Ross Reviews: Bose Soundlink Flex or Beosound A1 (1st gen) - ultimate compact speaker 😇
- Alan Ross Reviews: Bose Soundlink Flex or JBL Flip 6 (eq adjusted) or Denon Envaya - best speaker for travel!
- Jay’s Straight Up Reviews & More: Tribit Stormbox Flow vs Soundcore Motion 300 (LDAC) 😵 Budget Bose Soundlink Flex "Inspired" Speakers
- Patricio Benadon: Bose SoundLink Flex vs. Mini 2 SE. Music audio quality sound test. Listen 4 different genres!
- Patricio Benadon: Bose SoundLink Flex vs. Mini 2 SE. Music audio quality sound test. Listen 4 different genres!
- Danny Pops: BEST Bose Speaker?? Bose Soundlink Flex vs micro, Color II, and revolve + More from DannyPops →
- Alan Ross Reviews: Bose Soundlink Flex vs Minirig MK3 and Marshall Emberton - best bluetooth speaker?
- Joy & Oluv’Sone: JBL, Bose, B&O, Sonos, Earfun, SoundCore… which portable speaker sounds best?
- Alan Ross - The Anti Shill!: Small speaker, mighty sound, The Flex gen 2 shatters physics!
- Head-to-Head Comparisons
- Bose Soundlink Flex vs Bose Soundlink Flex 2nd gen
- Bose Soundlink Flex vs JBL Charge Essential 2
- Bose Soundlink Flex vs Tribit Xsound Plus 2
- Bose Soundlink Flex vs Huawei Sound Joy
- Bose Soundlink Flex vs Teufel Rockster XS
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- Bose Soundlink Flex vs Soundcore Motion 100
- See all 117 comparisons
JBL Go 3: $39.95 Amazon eBay
Newer model: the JBL Go 5, rated 3.2/5.
Pros: Genuinely pocket-sized at 209g. IP67 rated, survives full submersion in a meter of water for 30 minutes. Rope loop for clipping to a bag. Measured bass extension of 87Hz (-10dB).
Cons: Not much bass at all, strange mids peak.
Full JBL Go 3 review and specifications →
| Amplifier Power | 4.2W |
|---|---|
| App | No |
| Aux Input | No |
| Bass Extension (-10dB) | 87Hz |
| Battery Life | 5 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.1 |
| Built-in Microphone | Yes |
| Charging Time | 2.5 hours |
| Digital Aux Input | No |
| Dimensions | 3.4” x 2.7” x 1.6” (86 x 69 x 40 mm) |
| Drivers | 36mm full-range driver |
| EQ | No |
| Frequency Response | 110Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP67 |
| Maximum SPL | 88dB (measured by Alan Ross Reviews) |
| Omnidirectional | Pointing up |
| Party Mode | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (built-in loop) |
| TWS | No |
| Weight | 0.5 lbs (209 g) |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: JBL GO 3 Review - vs Tribit Stormbox Micro - best small cheap speaker? More from alanrossreviews →
- DLX Willington: Jbl Go 3 vs Sony XB12 Sound Battle With Sound Sample More from DLXWillington →
- Stereo Specs: JBL GO 4 vs JBL GO 3 : Is there more bass or not?Unboxing,Features,Specs,Sound Test & Comparison !
- StereoSpecs: JBL GO 4 vs JBL GO 3 : Worth the upgrade?
- Techder Audios: JBL GO 3 VS XIAOMI PORTABLE OUTDOOR SPEAKER "BEST COMPACT SPEAKERS!?" More from techderaudios →
- Techder Audios: HOPESTAR H54 VS JBL GO 3 "SIMILAR DESIGN BUT SOUND IS DIFFERENT?!’’
- Alan Ross Reviews: Harman Kardon Neo vs JBL GO 3 - best bluetooth micro speaker❗❗❗
- Techder Audios: JBL GO 3 VS ORTIZAN X10
- Head-to-Head Comparisons