EF800 Siemens/Telefunken, true NOS/NIB, diamond <>, holy grail


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SKU: 2020200002 Categories: , ,


Siemens EF800/CV5092/6BX6 tube. This tube is absolutely new and in immaculate condition.

The EF800 is the milspec/professional longlife, low noise version of the EF80/6BX6.

It is the gold standard for the Miktek CV4 Mk9 Bock Audio 241, Stam Audio SA-47 MK2, Golden Age GA-47 etc.

The tube was made by Telefunken and relabeled by Siemens. You will find the Telefunken diamond on the bottom of each tube.

The tube comes in its original military white box. Box may have light storage wear and/or slightly different design.

The actual tubes delivered may vary in print-style from the one pictured. Othter than that, they are all the same.

The tube is guaranteed to be new and unused from old military stock!

We also do have original Telefunken EF800 and Siemens with gold pins (Tesla made) in stock. Please ask…

Additional information

Weight50 g



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