NOS 6550 Longevity

Longevity NOS Tung-Sol Blackplates vs NOS GE 6550a in use?

williampowell01-29-2021 8:27pm

millercarbon Details Discussions Posts This discussion 12,531 posts 01-30-2021 at 05:23pm Copy Comment URL Report Comment Edit Delete I can categorically state without a doubt they will last until they wear out.