Oops! Good point. Always pays to look through ALL the specs . . . Thanks for the tip. James A. (Andy) Moorer www.jamminpower.com ----- Original Message ----- I'm rusty enough that I could be in left field here, but aren't the 6BJ6 heaters in series with other tubes? The 6BJ6 is a 150mA tube while the 6BA6 is 300. 73, Dave Wise