The VssBurst SPTT2.6 is the most comprehensive electron tube tester on the market today, offering unparalleled testing possibilities for all Electron Tubes / Thermionic Valves. No need for upgrades or unstable software. Every variable is easily modified by the user so as to be able to test the tube under the same voltage conditions present in the final application. The VssBurst tester uses three, fully regulated Direct Current Power Supplies, to supply precise parameters to the tube under test. Test Fixtures are available for all types of sockets. The SPTT-2.61 ships with 8 pin and 9 pin inclusive.