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1 / 8Soundcore Sleep A20
Key specs
Low-profile earbuds is the most common — on 67% of the 3 sleep headphones we've cataloged (of 3).
above average for sleep headphones — based on 3 of 3 we've cataloged.
True is the most common — on 67% of the 3 sleep headphones we've cataloged (of 3).
Based on 3 of 3 sleep headphones we've cataloged.
Design
- Form Factor
- Low-profile earbuds
- Is Washable
- Yes
- Weight
- 53 g
Battery
- Battery Life Wireless
- 10 h
- Charging Method
- USB-C
- Full Charge Minutes
- 90 min
Features
- Sleep Timer
- Yes
- Companion App
- IOS + Android
- Built In Sounds
- Yes
Connectivity
- Bluetooth Version
- 5.3
- Bluetooth Codec
- SBC, AAC
- Connection Type
- Bluetooth
Build
- Material Chassis Primary
- Rubber
Identity
- Model Number
- A6611
Microphone
- Microphone
- No
Release
- Date
- 2024-05-02
- Msrp Usd
- 149.99 USD
- Year
- 2024
Sound
- Frequency Response
- 20-20000 Hz
- Frequency Response High Hz
- 20000 Hz
- Frequency Response Low Hz
- 20 Hz
SoundGuys review
Read the full review ›The Anker Soundcore Sleep A20 earbuds are comfortable and stay in place for side sleepers, and have a long battery life. Still, they are held back by mediocre sound quality and a lack of ANC.
Lab data
How we test ›Objective measurements from the SoundGuys test lab — overlay other models to see how this one compares.
Measured frequency response (dB) against the SoundGuys house target — the dashed curve. The closer the measured line tracks the target, the more neutral the tuning; peaks ride above the target, dips fall below it.
Frequency response — measurement data
| Frequency (Hz) | Response (dB) |
|---|---|
| 20 | 22.2 |
| 25 | 26.7 |
| 32 | 21.0 |
| 40 | 21.1 |
| 50 | 11.5 |
| 63 | 15.9 |
| 80 | 1.6 |
| 100 | 8.5 |
| 125 | 14.2 |
| 160 | 6.5 |
| 200 | 6.8 |
| 250 | 7.3 |
| 315 | 3.8 |
| 400 | 0.7 |
| 500 | 0.1 |
| 630 | 2.3 |
| 800 | 6.3 |
| 1000 | 6.6 |
| 1250 | 1.5 |
| 1600 | 1.4 |
| 2000 | 4.7 |
| 2500 | 7.4 |
| 3150 | 3.0 |
| 4000 | 1.5 |
| 5000 | -3.5 |
| 6300 | -11.0 |
| 8000 | -10.0 |
| 10000 | -15.6 |
| 12500 | -13.6 |
| 16000 | -16.1 |
| 20000 | -19.3 |
Passive isolation (dB) with ANC off — how much ambient noise the fit blocks on its own. Higher on the chart means more attenuation.
Passive isolation — measurement data
| Frequency (Hz) | Attenuation (dB) |
|---|---|
| 21 | 3.5 |
| 26 | 3.3 |
| 33 | 2.4 |
| 41 | 1.6 |
| 52 | 4.9 |
| 65 | 3.7 |
| 82 | 4.3 |
| 103 | 3.9 |
| 130 | 2.8 |
| 163 | 4.8 |
| 205 | 5.5 |
| 259 | 6.0 |
| 325 | 6.0 |
| 410 | 4.7 |
| 516 | 7.7 |
| 613 | 7.8 |
| 772 | 12.3 |
| 972 | 15.5 |
| 1220 | 17.1 |
| 1540 | 18.5 |
| 1940 | 22.4 |
| 2440 | 27.3 |
| 3070 | 29.2 |
| 3870 | 29.1 |
| 4870 | 28.7 |
| 6130 | 28.1 |
| 7720 | 28.7 |
| 9720 | 35.6 |
| 12200 | 25.6 |
| 15400 | 26.5 |
| 19400 | 27.3 |
Features & Opinions
More from the team ›Commentary and deep dives from the SoundGuys editorial team.

