I've got a Victoria champ clone and it is a great sounding amp - not lacking in any way. However, I prefer a lot of high end sparkle from my amps. Anyway to add some treble or presence to the amp (changing a resistor or cap maybe?) I've already played around with tubes and speakers and like the ones I have in it. By the way, it is the one with the 12" speaker, and I have a Celestion G12h30 in it and it sounds way bigger than the original Jensen. Thanks.