(4) NOS Tesla EL-34 tubes prof essionally tested on a Amplitrex AT1000 tester. Tubes have brown bases, OO getters and welded plates. Based on the test results, all 4 can be considered "As New" and are closely matched. All 4 were stable and reached full current output swiftly, and had no shorts, leaks or appreciable gas. Test results for current and transconductance as a % of spec were as follows: tube 1 - 92% / 114% tube 4 - 86% / 104% tube 7 - 90% / 96% tube 12 - 91% / 99% Applied Test/Plate Screen Voltage was 250/265 volts. Shipping to CONUS only.
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