1More launched its first pair of true-wireless stereo (TWS) earbuds with active noise cancellation (ANC) in late 2019. Now, it has revealed that the same accessories have attained a certification from the audio authority THX. This is attributed to the brand's QuietMax technology and hybrid ANC techniques.
https://www.notebookcheck.net/1More-announces-that-its-ANC-earbuds-are-the-first-TWS-devices-to-be-THX-certified.492512.0.html
It's so overrated, I got thx stuff and hiss is present.
1more anc pro got great anc, not the best though, at 500-2000Hz and around 10kHz it's weak.
If they would present some technical graphs to go along with their words, it would be more believable.