Model:
E88CC (6922/ECC88/6DJ8)
Brand:
Tungsram, Hungary
Classification:
Twin Triode
Model:
US$12.00/pc

ECC88/6DJ8
Brand:
Ultron
Classification:
Twin Triode, Russian made, best buy
Model:
E88CC (6922/ECC88/6DJ8)
Brand:
Valvo
Classification:
Twin Triode
Model:
6DN7
Brand:
General Electric
Classification:
Twin Triode
Model:
6DN7
Brand:
RCA
Classification:
Twin Triode
Model:
6EM7/6EA7
Brand:
Dumont
Classification:
Twin Triode
Model:
6EM7/6EA7
Brand:
RCA
Classification:
Twin Triode
Model:
6EM7/6EA7
Brand:
Sylvania
Classification:
Twin Triode