Hi folks, I currently play my bass through a Keyboard amp which handles the ottom end OK, and I THOUGHT was fine until I played through a pal's trace combo..... oh dear...... now I need to spend money!! so.... I MAINLY play guitar, and occasionally bass. My git I run throught FX and Di it to the PA...... If I were to buy or build a Valve Head, how much difference is there between the schematics for a bass & git amp? ta!!