RCA 12SN7 vacuum tubes testing strong. 100% represents what you would expect from a NOS tube on my Amplitrex and 65% is considered too low to use. Please feel free to return items that do not meet your needs within the 30 day period, I only want satisfied customers! Thanks and God bless!
"But seek first the kingdom of God and his righteousness, and all these things will be added to you." Matthew 6:33