Hello, in preparation of upcoming move overseas, I decided to part with a stock of new and used 300B tubes listed below:
Shuguang Black Treasure 300BZ: three matched pairs (MPs) two new pairs (bought as spares and never used), one pair used for about a year. Purchased from PartsConnexion.
Shuguang 300B: two MPs, one new (bought as a spare and never used), one pair used for about 9 months
Sophia Electric 300B: one MP used for approx. 6 months
JJ 300B: one MP used for approx. 6 months
Euro 500 for all of the above + shipping costs.
Shuguang Black Treasure 300BZ: three matched pairs (MPs) two new pairs (bought as spares and never used), one pair used for about a year. Purchased from PartsConnexion.
Shuguang 300B: two MPs, one new (bought as a spare and never used), one pair used for about 9 months
Sophia Electric 300B: one MP used for approx. 6 months
JJ 300B: one MP used for approx. 6 months
Euro 500 for all of the above + shipping costs.