Philippe Cabrit says > i have a friend who is technician for tube amp and i want to build a bassman > 59 amp... > i want to know if someone here try this? > i need drawings and all tips are welcome Philippe, you're STILL on an amplifier tone quest, eh? ;-) Here are some links you may find useful: http://members.cox.net/nongenius/links.html#_amp Bon Chance! - -Scorcher