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All tubes come with a full 30 day, unconditional, no questions asked, money back satisfaction guarantee!
Test scores average between 80% and 90% of NOS values.
These particular tubes measure 90%.
Individual test scores will be written on the new boxes that you receive with your tubes.
You are purchasing a "Platinum Grade" matched pairs of tubes. This means that the plates are very tightly matched on a calibrated Hickok TV-7 or 799 within 5%.
Please see our other listings for "Silver, Gold and Platinum Plus" tubes. Silver Grade tubes are matched within 15%, Gold Grade within 10% and Platinum Plus within 1%.
The Gold and Platinum grade tubes are recommended for more critical applications such as your preamp and phono stage.
Worldwide United States Postal Service First Class International delivery is available at $12.95 for the first pair and only $3.00 for each additional pair.
Please email with any questions and/or concerns.
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