I've heard that putting your amp on an elevated surface (so that it is in line with your head) allows more of the high-end (treble) to be heard. This is also why some cabinets are slanted. I find that this is true, but now my amp seems very loud and trebley. Is this how I'm supposed to hear my amp, or should I put it back on the floor?
raising it off the floor kills your bass response. if you don't like the treble put it back down on the ground.
if you want lots of highs and not much bass, lift it or angle it up. if you want moderate everything, keep it on the floor away from walls. if you want lots of bass, keep it on the floor against a wall.
thanks for the help everyone