JJ Valves

All materials used in the manufacturing of JJ tubes comply with the most stringent quality requirements. In tube manufacturing, the fundamental requisite for the best production results is to maintain as high mechanical precision for assembly as possible. JJ Electronic uses assembly precision of no more than ± 0.02 mm. We at Hot Rox UK ship JJ valves direct from their factory which then go through our stringent testing and curve trace matching procedure on our customized computer valve testers