- Jan 20, 2010
Ah, yes, the GE 5998A is a nice little tube. I think I paid like $5 for mine about 10 years ago.Actually, I own four of the GE 5998A power tubes. They are very good (rotate their use in Woo WA3). As for Sylvania, I have no experience with their 6080 types but I do like their 7308s and their triple mica, square getter 12AT7…(rotation in Schiit Valhalla II).