So I just picked up a Macbook Air to replace my desktop rig and Audioengine A5 speakers. The A5's were wonderful as near-field/directional speakers, but doesn't really fill up a bedroom vibrantly.
I'm considering a T-Amp like the Dayton DTA-100a and a quality 2.0 bookshelf speaker to stream music to using a Apple Airport Express.
I will also be placing the speakers on a bookshelf and the height can be no taller than 12".
I did really love the warm sound and bass of the A5's, but I haven't really listened to other higher-end speakers to compare them to.
I listen to pretty much any type of music other than hard rock; mostly listen to Frank Sinatra, Miachel Buble, James Blunt, Jason Mraz, Ed Sheeran, etc.
Budget wise I would like to keep it around $300, but would probably be willing to stretch it up to $400 if the difference is worth it.