about a year ago i bought a mesa boogie walkabout and a 4x10 ampeg front ported cab. overall, i am impressed with the performance but i find it to be good, but i am having trouble dialing in my eq settings. i am used to using a graphic eq and i find that the easiest way to get what i want. i was wondering if you had any suggestions on eqing or a preamp that i should look into to get any specific sound. i play an ernie ball stingray and prefer the tight soundsof rage against the machine, but i also would like to easily change the sound at any time. please help.