Sound quality:
- with FLAC music:
 bass is lot
 medium is average
 high is medium-high
Tested with rock music, drum and bass and beatbox. Recommended for music with lot of bass.
Clear, not noise heared.
 
- with MP3 music:
 bass is more
 medium is high
 high is lower
Tested with 320kbs mp3s and sound is clear but sometimes hear low noise effect.
 
Volume level is very good high. I like this headphone. You need just try one, and you like them too