You guys were super helpfull with my previous dilemma concerening some design considirations for my bass preamp. So here my next hurdle. I can't decide between a 3 band EQ with selectable mid frequency or a 4 band with fixed frequencies (80 shelf, 360, 900, 2k shelf). It's an all tube EQ. 3 Band will give a bigger boost/cut dB range, but that's not really an issue. i don't like to use an EQ as an effect. So, there it is. What would you guys like on your pre amp??