im from lima ohio. i played in supercharger xtc, ive played chicago a few times. i teach 80 kids used to have a lot of you tube vids shredding, but ima nobody. but i truly think youre right. ive tried the levels many ways but the diezel comes through too hot. when the input is down the diezel signal is too quiet compared too other instruments. its has to be the diezel with my board. my other amps are not sounding that hot in the in put. i aslo used a radial direct box. u ever tried them. im talking between students by the way