2A3-Z (pair)
True "Treasure" as a result of Shuguang's 50 years of expertise in vacuum tube design and production. High Polymer Compound Carbon (HPCC) coating is for the first time used on vacuum tube production. Compared to traditional carbon spray technology, HPCC More Info »300B-Z (pair)
True "Treasure" as a result of Shuguang's 50-years' of expertise in vacuum tube design and production. High Polymer Compound Carbon (HPCC) coating is for the first time used on vacuum tube production. Compared to traditional carbon spray technology, HPCC coating More Info »6CA7-Z (quad)
True "Treasure" as a result of Shuguang's 50 years of expertise in vacuum tube design and production. High Polymer Compound Carbon (HPCC) coating is for the first time used on vacuum tube production. Compared to traditional carbon spray technology, HPCC More Info »CV181-Z (pair)
This tube is a true 6SN7 equivalent and you can use it in place of 6SN7 tubes of various brands. It has identical specification as RCA 6SN7. Do not use it to replace NOS CV181 tube. True "Treasure" as a More Info »KT88-Z (quad)
True "Treasure" as a result of Shuguang's 50-years' of expertise in vacuum tube design and production. High Polymer Compound Carbon (HPCC) coating is for the first time used on vacuum tube production. Compared to traditional carbon spray technology, HPCC coating More Info »
