That is a totally inaccurate statement. Vac , and many others have been using
dependable matched tubes for years Shugaung has been making tubes since 1958. They have had old RCA and Tungsol original machines in there from way back and have made new machines similar. Their El34, Kt88 Kt120
power tubes all very dependable . And small signal tubes a lot direct American copies .Old 60s50s tubes tubes better for various reasons mainly
a bit better materials and much closer inspection per 100, hoot 1,000s
if you want top tubes the a Black treasures are very good quality and highly musical. They are a bit $$ pricy but are superior for power tubes no Russion tube is better. And if you buy from them on eBay you get a full 12 month warranty . You will not top that.
dependable matched tubes for years Shugaung has been making tubes since 1958. They have had old RCA and Tungsol original machines in there from way back and have made new machines similar. Their El34, Kt88 Kt120
power tubes all very dependable . And small signal tubes a lot direct American copies .Old 60s50s tubes tubes better for various reasons mainly
a bit better materials and much closer inspection per 100, hoot 1,000s
if you want top tubes the a Black treasures are very good quality and highly musical. They are a bit $$ pricy but are superior for power tubes no Russion tube is better. And if you buy from them on eBay you get a full 12 month warranty . You will not top that.