Question 1: Speakers versus Hometheater system

Question 2: Powered versus Amp + Passive Speakers?

Question 3: Need of a DAC?



P.S. - It's all about Music, Music & Music and very little movies!



I shortlisted - 

AudioEngine A5+ Premium Powered

versus

AudioEngine P4 Premium Passive Bookshelf + AudioEngine N22 Desktop Audio Amplifier

versus

AudioEngine A2

Or

wait for AudioEngine A2+.

Also, suggest if these is anything better in this price bracket.