6SN7GTB ITT/Hitachi, black plates, copper rods, tests excellent
Out of stock
ITT 6SN7GTB made by Hitachi in Japan, no box.
This tube looks unused but may have seen minor use. Tests excellent with 100%+ on each triode system.
This tube features black plates and copper rods inside. Rumors tell that these were produced on ex-Mullard equipment…
Just one piece available!