I have brand new Nokia 6.1 model TA-1043, latest Android 8.1 May update, and I'm facing the problem with sound, both with speaker and headphones. When the Volume is below 50% scale and you listening some music with a low-level intro, like Pink Floyd Echoes or Pink Floyd Speak To Me, both sounds from speaker or headphones act like you using a heavy setup of Noise Gate Compression. I've made some mp3 example with Pink Floyd Echoes flac, processing Noise Gate plugin -40dB approx. I don't know is it the problem with my device or is global.
mp3 link: https://drive.google.com/file/d/1xGv...ew?usp=sharing
Noise Gate screenshot: https://drive.google.com/file/d/1K8f...ew?usp=sharing