Soundcore Liberty 4 NC
ANC earbuds · lab isolation numbers and gym-fit notes. Scroll the uses. There is no tab bar.
Official Liberty 4 NC product shot (A3947). Official site · Amazon
On a plane or train, the rumble actually drops.
SoundGuys measured an average 84% cut in outside loudness. They call airplane-engine rumble a strength, which is why these exist for commuting.
“Our testing shows that the Liberty 4 NC reduce the loudness of external noise by an average of 84%… In particular, the Liberty 4 NC are better at blocking out low-frequency noise, such as the rumble of an airplane engine.”See this real review on SoundGuysSoundGuys · Liberty 4 NC vs Liberty 5 · 2025-05
Voices around you still leak a bit.
Rumble is the easy part. In the full SoundGuys review, chatter still gets through, so you may need to turn the music up. The buds sit shallow, so higher sounds isolate worse than engine noise.
“With the buds' isolation, chatter sometimes still gets through somewhat, necessitating a volume increase. For the money, the combined noise canceling and isolation performance is still excellent overall, but the buds don't fit deep enough to isolate particularly well.”See this real review on SoundGuysSoundGuys · Liberty 4 NC review · isolation
In a busy gym, the background recedes.
RTINGS says the ANC can isolate you from a busy gym or heavy traffic, and they stay in for a moderate run or a bench session.
“They're lightweight and comfortable for long training sessions, and their ANC can keep you isolated from background noise in a busy gym or along a road with heavy traffic.”See this real review on RTINGSRTINGS · Liberty 4 NC · Sports and Fitness
Keep them for weights. Skip HIIT.
No wings, no hooks, shallow fit. RTINGS: they stay put for a moderate run or a weight session. CrossFit or HIIT is where they start falling out.
“Still, they'll stay in place during a moderate run or weight session on a bench but aren't stable enough for CrossFit or HIIT.”See the HIIT fit note in the same RTINGS reviewRTINGS · Liberty 4 NC · fit
Desk noise drops enough to work.
RTINGS calls them decent for the office. Nine hours on a charge with ANC, isolation against chatter and noisy fans, and they pair to two devices at once.
“These earbuds have a lightweight and comfortable build, as well as a nine-hour battery for all-day listening. Their great ANC performance will isolate you from ambient chatter and noisy PC fans, and they can connect to two devices simultaneously.”See the office section in the same RTINGS reviewRTINGS · Liberty 4 NC · Office Work
On calls, your voice sounds dark and a bit muddy.
Fine for listening at a desk. If you take Zoom, RTINGS says the mic is only okay: comprehensible, but bassy and short on detail.
“They're only okay for taking calls. Your voice on calls will be comprehensible but sound bassy and lacking in detail.”See the microphone note in the same RTINGS reviewRTINGS · Liberty 4 NC · microphone
What that adds up to
- Commute: engine rumble drops. Nearby voices still leak some.
- Gym: busy-room ANC helps. Skip HIIT and CrossFit.
- Desk: about 9h with ANC. Calls sound dark and a bit muddy.
Soundcore Liberty 4 NC
$80–$100
Official MSRP $99.99. Amazon was about $80 when this page was written.