HMMM! The Gatesway we had at WKDK had 6BQ5's not 6AQ5's. Getting 10 watts out of a pair of 6AQ5s would require a cherry red plate! Ray Gilliam the CE made a plug in so the the 5V4 and the 6080 could be operated vertically and preventing the plate sag and POWWWW! on the 5V4 rectifier tube as it got older. Powell -- NNNN !