Matched Pair Psvane CV181-T Mark II Vacuum Tube New Premium Grade Treasure Tube 1.By virtue of its smart design of power turbo, the electron current density within the vacuum tube reaches up to the maximum value so that the energy, dynamic performance and saturation of voice can be greatly improved. 2. Due to the use of Teflon as its base material, the Psvane Mark becomes more stable and durable. 3. The method of aluminum base oxidization is used for coloring to make sure it will never change color or discolor. 4.It adopts the completely new gold plated base pin so that the contact performance at the connection part can be much better, thus the loss of small-signal can be reduced to the minimum level. Packaged includes: Matched pair PSVANE CV181-T Mark Vacuum Tube2pcs