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In Reply to: RE: Tube Inflation since 1965 ? ........................ posted by FlaCharlie on April 27, 2021 at 12:08:29:
The 300B was about $9.50 in the mid 1950s, which was very expensive, but it was a special tube designed for commercial or industrial use, not something employed in consumer applications.
Edits: 04/29/21
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- RE: Tube Inflation since 1965 ? ........................ - maxhifi 07:51:20 04/29/21 (0)