Short answer: both are discontinued, so this only matters if you are buying used. Used, the Soundcore Boost “upgraded” 2021 is the better pick: it ranks #5 of 175 medium speakers by sound quality (rated 4.4/5), against #172 (rated 2.0/5) for the Zealot S61. If you want one new, the EarFun Uboom L ranks #2 at $49.79.
The Soundcore Boost “upgraded” 2021 is the better-sounding pick. A very neutral good sounding inexpensive small speaker with quite deep bass for the size. It has an adjustable EQ, which the Zealot S61 lacks. It plays in stereo from a single unit, unlike the Zealot S61. The tradeoff: Slight DSP tuning issue which makes bass get lighter at times at very low volumes, examples in oluv’s video.
The Zealot S61 is the longer-running pick. 20W output, IPX7 waterproof, exceptional 40-hour battery life, Bluetooth 5.2, TWS stereo pairing, compact 1.5 lbs (665 g) design, single full-range driver, built-in microphone, AUX input, USB-C charging. It is rated for 40 hours of battery against 12 for the Soundcore Boost “upgraded” 2021. It keeps a wired aux input, which the Soundcore Boost “upgraded” 2021 lacks. Watch for: Sounds like a soup can, no bass at all.
Buy the Soundcore Boost “upgraded” 2021 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the EarFun Uboom L instead.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Specifications Side By Side
| Soundcore Boost “upgraded” 2021 | Zealot S61 | |
|---|---|---|
| Price | $60 Discontinued | $20 Discontinued |
| Ranked | #5 of 175 in Medium Size Portable Bluetooth Speakers | #172 of 175 in Medium Size Portable Bluetooth Speakers |
| App | Yes | No |
| Aux Input | No | Yes |
| Bass Extension (-10dB) | 56Hz | - |
| Battery Life | 12 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC (inferred; additional codecs unverified) |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (9 band) | No |
| IP Rating | IPX7 | IPX7 |
| Bluetooth Latency | 150ms | - |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) | - |
| Party Mode | No | - |
| Power Bank | Yes (USB-A, 5V/1A) | No |
| Power Input | USB-C | USB-C |
| Stereo | Yes | No (single full-range driver) |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 1.3 lbs (590 g) | 1.5 lbs (665 g) |
| Bluetooth Version | 5.0 | 5.2 |
| Dimensions | 8” x 2.8” x 2.7” (204 x 72 x 69 mm) | 4.1” x 4.1” x 6.7” (103 x 103 x 170 mm) |
| Drivers | 1.75” (44mm) x 2 active drivers and one passive radiator | 66mm full-range |
| Amplifier Power | 20W (10W × 2) | 20W |
| Digital Aux Input | No | No |
Related Speaker Comparisons
More worthwhile head-to-heads for Soundcore Boost “upgraded” 2021:
- Soundcore Boost “upgraded” 2021 vs Soundcore Motion 300
- Soundcore Boost “upgraded” 2021 vs Soundcore Motion+
- Denon Envaya DSB-250BT vs Soundcore Boost “upgraded” 2021
- Minirig 4 vs Soundcore Boost “upgraded” 2021
- Soundcore Boost “upgraded” 2021 vs B&O Beosound A1
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.
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The Two Speakers In Full
Soundcore Boost “upgraded” 2021: $60 Discontinued eBay
Older model: the Soundcore Boost “original model” pre-2021 (ranked lower, rated 4.2/5). See every Soundcore Boost generation.
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. Measured bass extension of 56Hz (-10dB).
Cons: Slight DSP tuning issue which makes bass get lighter at times at very low volumes, examples in oluv’s video. Discontinued and no longer sold new.
Full Soundcore Boost “upgraded” 2021 review and specifications →
| Released | Jul 2021 (5 years ago) |
|---|---|
| Amplifier Power | 20W (10W × 2) |
| App | Yes |
| Aux Input | No |
| Bass Extension (-10dB) | 56Hz |
| Battery Life | 12 hours (Manufacturer specified) |
| Bluetooth | Yes |
| 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) |
| Drivers | 1.75” (44mm) x 2 active drivers and one passive radiator |
| EQ | Yes (9 band) |
| IP Rating | IPX7 |
| Maximum SPL | 99dB (measured by Alan Ross Reviews) |
| Omnidirectional | No |
| 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
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- Alan Ross Reviews: Soundcore Motion 300 or JBL Flip 6 or Soundcore Boost v2? we all have issues!
- Alan Ross Reviews: 2x Soundcore Boost (stereo) vs Motion Boom and Motion+ - Best Soundcore speaker? 😋
- Alan Ross Reviews: Bogasing G4 spot cheap speaker - I was NOT expecting this!
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- Alan Ross Reviews: Soundcore Boost vs Soundcore 3 - Best small bluetooth speaker❓
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- Alan Ross Reviews: 1 million views! Best Budget Tws? Tozo Pa1 Review and sound test
- Alan Ross Reviews: Earfun UBoom L Review Speaker tuned by a Geek vs Soundcore Motion Plus $100 dollar best portable?
- Alan Ross Reviews: Small speakers, Bogasing M5 speaker takes on the usual suspects!
- Speakertech: Anker soundcore Boost (Upgraded) vs minirig mini in stereo /2.0 (and changing the equalizer)
- Head-to-Head Comparisons
- Soundcore Boost “upgraded” 2021 vs Denon Envaya DSB-250BT
- Soundcore Boost “upgraded” 2021 vs Soundcore Motion+
- Soundcore Boost “upgraded” 2021 vs Minirig 4
- Soundcore Boost “upgraded” 2021 vs Soundcore Motion 300
- Soundcore Boost “upgraded” 2021 vs B&O Beosound A1
- Soundcore Boost “upgraded” 2021 vs B&O Beosound A1 2nd gen
- Soundcore Boost “upgraded” 2021 vs JBL Charge 6
- Soundcore Boost “upgraded” 2021 vs JBL Flip 6
- See all 77 comparisons
Zealot S61: $20 Discontinued eBay
Pros: 20W output, IPX7 waterproof, exceptional 40-hour battery life, Bluetooth 5.2, TWS stereo pairing, compact 665g design, single full-range driver, built-in microphone, AUX input, USB-C charging
Cons: Sounds like a soup can, no bass at all. Weird frequency response all over. Discontinued and no longer sold new.
Full Zealot S61 review and specifications →
| Released | Feb 2022 (4 years ago) |
|---|---|
| Amplifier Power | 20W |
| App | No |
| Aux Input | Yes |
| Battery Life | 40 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC (inferred; additional codecs unverified) |
| Bluetooth Version | 5.2 |
| Built-in Microphone | Yes |
| Digital Aux Input | No |
| Dimensions | 4.1” x 4.1” x 6.7” (103 x 103 x 170 mm) |
| Drivers | 66mm full-range |
| EQ | No |
| IP Rating | IPX7 |
| Omnidirectional | No |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No (single full-range driver) |
| TWS | Yes |
| Weight | 1.5 lbs (665 g) |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons