Matt - I used to be totally opposed to any EQ in my system, but that was before Amarra. This is so transparent that it can both correct for deficiencies in your speakers as well as reduce the room resonances. Everything gets better. This is the cheapest, most significant upgrade you will ever do. It can transform your system.
I use it at shows whenever possible and at home. Its a bit or work to get it installed and do the tweaking, but not too bad.
Steve N.
Empirical Audio