Description: An original and unique saver for great tubes! As a body we use part of a very rare version of the 6X6 tube, which was produced only until 1960 by the MELZ plant. What makes this case stand out is the thicker metal and rounded edges. Creating process: In our savers and converters, we use NOS components made 40-60 years ago. We assume that the quality of materials in those years was better than now. Further, it seems logical if you use a converter (saver) for the NOS (rare) tube from the same materials as your tube. Our standards: 1. We use quality materials and spare parts in all our products. We try to use Soviet-made NOS parts as much as possible, as we believe that the quality was much higher at that time. 2. All our products (savers and adapters) are assembled by hand in our specialized lab. 3. Each product undergoes rigorous testing and quality control, including testing on a special test stand.