Hey guys! Your problem is likely the monitors you are using. Don't get me wrong, the Shure 215s are nice and clear but the frequency response in the lower end is not adequate in my experience. The triple driver monitors are a lot better (ie. Shure se535s). Also, I find if the foams get old and don't seat in your ears properly you lose a lot of the power behind the sound. Even the 535s can get really thin sounding if they aren't in properly with a good seal.