I should have used an intro there.....I didn't "say" anything in post #79. I simply posted a technical expanation for the situation. I'll edit... standby..use 'em if you have 'em adn want to use 'em. Be aware that cathode poisoning is a reality and occurs when the circuit has been left in that standby mode for long periods....decreasing the integrity and life of the tube. If I didn't say it earlier, the only amps that demand that I use the standby on are amps that have a lot of relays that Pop! when the circuit is shut down with full voltage present in the circuit. The standby is not needed for firing the amp up, but it is needed when shutting the amp down...unless you like hearing those relays Pop, Pop, Pop..... The standby is useful when changing cables or instruments.