1dB is easy to tell the difference, for me 0.5 isn't any prob either. At least with the kX Audio driver's EQ, I often try listen to difference between 0.1 increments. :p But yea I probably was using a bit different values than this, (maybe -1.5 at 62 - 125Hz for example) but the shape of the curve is more relevant though, it's all about the relevance to each other, I mean you would get similar shape with your suggested settings, it would sound a bit less warm and more laid-back the lower you'd boost the values but that's about it. I usually tend to prefer go the opposite, even keeping the lowest point above 0dB but boosting all other frequencies even more instead to get an even more warmer/aggressive sound which is what I prefer.
Edited by RPGWiZaRD - 12/26/10 at 5:40pm