Model:
6CN6/EL38
Brand:
Mullard
Classification:
Pentode or Tetrode
Model:
6EW6
Brand:
General Electric
Classification:
Pentode
Model:
6J7
Brand:
Ken-Rad
Classification:
Pentode (metal)
Model:
6JK6
Brand:
Amperex
Classification:
Pentode (for Marantz 10B tuner)
Model:
6JK6
Brand:
National
Classification:
Pentode (for Marantz 10B tuner)
Model:
6SJ7
Brand:
GE Jan
Classification:
Pentode (metal)
Model:
6SJ7
Brand:
KenRad
Classification:
Pentode (metal)
Model:
6SJ7
Brand:
RCA
Classification:
Pentode (metal)