In the early eighties when Sylvania merged with GTE. The Sylvania name was then sold to Philips to market electronics and Osram to market light bulbs. By about '83 or '84 there were no US or Western European tube manufacturers of significance.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.
