Lot Mullard 6 Blackburn 6CA7 / EL34 Vacuum Tubes Used LOW Tv7 Tests

Description: This is a lot of 6 LOW TESTING MULLARD EL34 6CA7 Black burn codes on all 6 These tubes tested at or below the tv minimum of 30 They are used tubes that have no shorts - and are sold as is with no refund or return. The vintage guitar amp I have that uses these tubes needs high testing strong tubes so these can not be used in my unit. The tv7 tester has been around a long time and is a trusted tester for military, who had high standards for reliable tubes that would not fail in critical conditions. Military standards were tubes needed to meet 60/65% which they established as (minimum value) A common misconception of tube testing is that every unused tube, new or vintage, should test at 100% of the meter scale of the tester. A tube was considered acceptable/new/ passed standards if it tested between the specified minimum and maximum on a tube data sheet or the minimum value specified on the tester (tv7 is minimum is 65%) Tubes do not give the same reading across testsrs - even the same model tester will give a different reading sometimes. A tube testing low on tv7 does not mean it’s a bad tube just unacceptable for military.

Price: 360 USD

Location: Columbia, Tennessee

End Time: 2024-11-08T16:26:56.000Z

Shipping Cost: 5.38 USD