Dayton Audio B652 Bookshelf Speakers $29.98
Lepai LP-2020A+ Amplifier $28.00
Polk Audio PSW10 10" powered subwoofer $99.98
Not counted: Old Toshiba laptop, FiiO E17 DAC / headphone amplifier, speaker wire, 3.5mm male-to-male cable, and a desk.
Do not try this with Audioengine A2, or even Audioengine A5, hee hee.
This system kills in the near-field. It will rock a large bedroom to ear-ringing and ear-damage levels, and that includes huge punchy BASS. Fantastic for reggae, hip-hop, electronic, or what-have-you in a large sized bedroom, but also great for rock 'n roll, jazz, classical, and everything else. It's so loud in a large bedroom inside a house, that you will be worried about the neighbors calling Johnny Law. It will very easily knock stuff off the walls if you dial it up that way.
I'm not commenting on this rig for home theater, because that was never the goal. This is a MUSIC system.
The beauty is, through proper manipulation of the sub's crossover and volume controls, it sounds like the bookshelf speakers are the greatest bookshelf speakers in the world. They hit with authority. They hit you in-the-chest, and maybe in-the-feet. It sounds like all of the bass is coming from the bookshelf speakers in front of you, although of course it's not. The sub is hitting!
This will blow away any "2.1 computer system" you find at somewhere like Best Buy or Audioengine.
What is not apparent due to the picture quality, is that the bookshelf speakers are at ear-level for me and I have plenty of room to fit my legs and feet underneath the desk because the laptop extends out on a leaf of the desk. Don't worry, this equipment is easy to move around to fit your desktop environment. The bookshelf speakers are pointed right at my ears, and the subwoofer is out of the way below my feet.