ONE new in box RFT EF12K (low microphonic version of ef12). Computerized tested on etracer tube tester. This is new in box. I only open to test. new in box.
ONE RFT EF-12 Vacuum Tube / Tested 💪 /Ships FAST From USA / NOS telefunken EF12
ONE RFT EF12. Computerized tested on etracer tube tester. Tests slightly used @ 80% gm 80% mA.
ONE RFT EF-12 Vacuum Tube / Tested 💪 /Ships FAST From USA / NOS telefunken EF12
ONE new in box VEB RFT EF12. Computerized tested on etracer tube tester. Made in Germany.
ONE RFT EF-12 Vacuum Tube / Tested 💪 /Ships FAST From USA / FUNKWERK LOGO EF12
FUNKWERK logo on tube. ONE RFT EF12. Computerized tested on etracer tube tester. “Gut” written on tube = good in German.
ONE RFT EF-12K Vacuum Tube / Tested 💪 /Ships FAST From USA / telefunken EF12
ONE new in box RFT EF12K (low microphonic version of ef12). Computerized tested on etracer tube tester. This was sealed new in box. I only open to test. new in box.