I've had this idea that I could order parts for the Objective2 amplifier, construct it, then sell inexpensively (Like $80 - $90 or something like that) for a little profit, and to make the O2 a bit more accessible for anyone wanting to buy one of the greatest solid state amplifiers in existence...

Nermind.  Friend doesn't want anything,

So I have a friend who is thinking about making music, and I would like to know what the best setup for mixing and mastering with a budget of $250 (He can go a little above if necessary). I'm looking for a setup with an open back and a setup with a closed back, because right now he has a...