Short answer: the Soundcore Boost “upgraded” 2021. It ranks #4 of 136 medium speakers by sound quality at $60; the Bose Soundlink Flex ranks #34 and costs $84.99, so there is little reason to consider the other one.
What the Soundcore Boost “upgraded” 2021 offers: A very neutral good sounding inexpensive small speaker with quite deep bass for the size. This upgraded version has a usb-c port while the old one has micro usb. Watch for: Slight DSP tuning issue which makes bass get lighter at times at very low volumes, examples in oluv’s video.
What the Bose Soundlink Flex offers: IP67 rated; rugged enough to survive drops from several feet and floats. Around 12 hours of battery at moderate volume. Watch for: Not stereo. Warm sounding with overly boosted bass which drowns out midrange detail
Buy the Soundcore Boost “upgraded” 2021. It ranks higher for sound quality than the Bose Soundlink Flex and costs less, so there is no real case for the other one.
Specifications Side By Side
| Soundcore Boost “upgraded” 2021 | Bose Soundlink Flex | |
|---|---|---|
| Price | $60 | $84.99 |
| Ranked | #4 of 136 in Medium Size Portable Bluetooth Speakers | #34 of 136 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Yes |
| Aux Input | No | - |
| Bass Extension (-10dB) | 56Hz | 56Hz |
| Battery Life | 12 hours (Manufacturer specified) | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC | - |
| Built in Microphone | Yes | Yes |
| EQ | Yes (9 band) | No |
| IP Rating | IPX7 | IP67 |
| Bluetooth Latency | 150ms | 33ms |
| Max Volume | 99dB | 96dB |
| Party Mode | No | Yes (Bose Party mode) |
| Power Bank | Yes (USB-A, 5V/1A) | - |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.3 lbs / 590 g | 1.3 lbs / 589 g |
| Bluetooth Version | 5.0 | 4.2 |
| Dimensions | 8" x 2.8" x 2.7" (204 x 72 x 69 mm) (7.7 x 2.5 x 2.6 inches) | 7.9" x 3.5" x 2" (201 x 90 x 52 mm) |
| Drivers | 1.75" (44mm) x 2 active drivers and one passive radiator | 1x 60mm full-range driver + 2x passive radiators |
| Output Power | 20W (10W × 2) | - |
| Digital Aux Input | No | No |
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Prices on this page were last checked August 27, 2026 at 10:09 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
Soundcore Boost “upgraded” 2021: $60 Amazon eBay
Pros: A very neutral good sounding inexpensive small speaker with quite deep bass for the size. This upgraded version has a usb-c port while the old one has micro usb.
Cons: Slight DSP tuning issue which makes bass get lighter at times at very low volumes, examples in oluv’s video.
Full Soundcore Boost “upgraded” 2021 review and specifications →
| App | Yes |
|---|---|
| Aux Input | No |
| Bass Extension (-10dB) | 56Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth Codecs | SBC |
| Bluetooth Latency | 150ms |
| Bluetooth Version | 5.0 |
| Built in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 8" x 2.8" x 2.7" (204 x 72 x 69 mm) (7.7 x 2.5 x 2.6 inches) |
| Drivers | 1.75" (44mm) x 2 active drivers and one passive radiator |
| EQ | Yes (9 band) |
| IP Rating | IPX7 |
| Max Volume | 99dB |
| Omnidirectional | No |
| Output Power | 20W (10W × 2) |
| Party Mode | No |
| Power Bank | Yes (USB-A, 5V/1A) |
| Power Input | USB-C |
| Stereo | Yes |
| TWS | Yes |
| Weight | 1.3 lbs / 590 g |
- Links
- Reviews, Comparisons and Sound Samples
- Alan Ross Reviews: Soundcore Motion 300 or JBL Flip 6 or Soundcore Boost v2? we all have issues! More from alanrossreviews →
- Alan Ross Reviews: JBL Flip 6 vs Maxsound Plus and Soundcore Boost - ultimate travel speaker!
- Alan Ross Reviews: 2x Soundcore Boost (stereo) vs Motion Boom and Motion+ - Best Soundcore speaker? 😋
- Speakertech: Anker soundcore Boost (Upgraded) vs minirig mini in stereo /2.0 (and changing the equalizer)
- Alan Ross Reviews: Bogasing G4 spot cheap speaker - I was NOT expecting this!
- Alan Ross Reviews: Bose Soundlink Flex vs Soundcore Boost vs Bogasing M4 - cheap or Bose?
- Reddit Search for Soundcore Boost “upgraded” 2021 Review
- Head-to-Head Comparisons
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- Soundcore Boost “upgraded” 2021 vs B&O Beosound A1
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Bose Soundlink Flex: $84.99 Amazon eBay
Pros: IP67 rated; rugged enough to survive drops from several feet and floats. Around 12 hours of battery at moderate volume.
Cons: Not stereo. Warm sounding with overly boosted bass which drowns out midrange detail
Full Bose Soundlink Flex review and specifications →
| App | Yes |
|---|---|
| Bass Extension (-10dB) | 56Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| 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 |
| Max Volume | 96dB |
| Omnidirectional | No |
| Party Mode | Yes (Bose Party mode) |
| Power Input | USB-C |
| Stereo | No |
| 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
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- 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 →
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- 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!
- Reddit Search for Bose Soundlink Flex Review
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