Equalizers...you can add lows, mids, highs. If you don't know the basis of an equalizer, I'm not even going to explain it. ;-)

You can shape your sound very nicely with one of these...and with 31 different bands to modify, it was very tedious to get the sound that I wanted...took me 23 minutes to dial in what I was looking for.

Touch one of those sliders and see what happens to your hand after that...you'll carry it home in a bag. I'll supply you some ice for the cut, though...I'm not THAT much of a prick.