Playing wise I never focused too much on my tone, though I really should, but more concerned with what I'm playing and being heard (me and my buddies play LOUD). One of the studios I frequent all come with the same equipment, that being a Aguilar preamp thing. Gain/Master Passive/Active switch I understand. I don't know what the other knobs really do so I'd like to learn more about it since I'll be using it often. Also somewhat related, any recommended articles/sites that explain how to get the best out of a 10-band EQ. I'd like to experiment more with my sound and some literature could always come in handy with these things.