I am looking for experiences with European brands of this tube. I have some Westinghouse made in England and a few American brands but am having troubles finding a dealer who carries Telefunken, Mullard, Marconi....
I'll take a look at head-fi. I have a Vista Audio SET amp that is sensitive to tube rolling. I like Raytheon and RCA so far, but would really like to try more because they are pretty cheap to experiment with.
You might want to check over at head-fi. There is a small German OTL integrated amp (Eklipse maybe) often used to drive AKG K1000 headphones that uses those tubes. My recollection is that amp was reportedly NOT sensitive to tube rolling.
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