Sylvania etc. Pair (2) 1LA6 Pentagrid Converter Loktal TESTED Vacuum Tube Audio 1939-1949

This listing is for a Pair (2) of 1LA6 Pentagrid Converter Loktal vacuum tubes in the Straight-walled Glass tube shape. They have a metal base, black plate, and top getter. Labels in stock include Sylvania, Philco. If you're looking for a particular brand, please message right as you order - we pack and ship quickly!

Your tubes have been fully tested on our Knight 600A tube tester with used good results. It has also passed shorts and gas tests. The tubes might have mechanical wear or have the label rubbed off - these are very old! Tubes that test like new (tNOS) are available in a separate listing. Every tube you receive from Sound By Doc is guaranteed against failure for 60 days after purchase, an industry extreme!

OPTIONS:

Want a regular white box? $1 extra

Most of our tubes are tested with one of our Amplitrex AT1000 tube testers, but these fantastic testers do not have built-in support for this tube type. Therefore, this type is tested on our Knight 600A tube tester from 1969. Most vintage testers use a proportional emissions test at 30VAC and extrapolate to real, working voltages, but not this one! The Knight tester is revered for its 250VAC, real-world emissions test and for its robust gas test. Since we have not calibrated your tester, we cannot guarantee that the test results on your tester will be the same.