On sale is a matching pair of US made Amperex USN 6922, military grade with pinched waist envelopes, built with curved D getter, used old stock tubes. These tubes produce the sound is balance, dynamic, quiet, refined, dimensional and excellent focus. They made my system produced a wider and deeper sound stage with a cleaner floor. These pinched waist tubes are rated the best by most of the people.
First tube coded 7l4/*9d, 919, 950, second tube coded 7l4/*9e, 919, 950. Their trans conductance percentage have been tested by a military tv2-cu tube tester, the reading for the first tube is 87/85 and the reading for the second one is 86/84. For a new tube is 100. These tubes have been sound tested with my kt88 pp power amp to made sure they sound the same and also there is no micro phonic and no noise have been found.
These tubes come with 5 day satisfaction warranty, refund will be the price of the tubes.
Shipping for the inner 48 states is $8.00, rest is various.
Insurance is optional.
For international buyer, please contact us before any offer.
Money order will be limited to US postal only.
Please let us know if you need a single or more.
NY state residence need to pay NY state tax of 8.875%.