Thanks Wayne. That tube is most likely what Valve Art sells @ $39.95. I'm presently using Billington Gold, which I've been told are the same tubes only hand-selected for better quality. I know Cetrons are $400~$500ea. Good NOS RCA's are typically over $300 and you can get a pair of KR Audio's for $550. I'm most likely going to try the new 845B made in China. It's supposedly modeled after the old Amperex 845 and quite a bit better sounding that the typical 845 being made today. But a pair costs $150. I was hoping that someone would have responded about the new 845M (M=Metal Plate) that's supposed to be coming out of the same factory that makes the 845B. I cannot find any info and really want to know if the 845B or 845M sounds best!Thanks, thetubeguy1954 (Tom Scata)