1. Yes, I use headphones. Currently Sennheisser HD 555. 2. I have Harman Kardon SoundSticks III 2.1 Channel Sound System. I use them when watching a movie or w

1. Yes, I use headphones. Currently Sennheisser HD 555. 2. I have Harman Kardon SoundSticks III 2.1 Channel Sound System. I use them when watching a movie or when I'm alone at home. 3. All kind of metal. Mostly progressive, technical death metal, deathcore, etc. Then classical, ambient, trip and a lot of Soundtracks… 4. I do but I rarely use Spotify.