double triode, noval tube: ECC83, 12AX7A, 7025, 5751, 12AY7, Mullard CV4004, CV759, CV492, 6N4, Genalex B339, 6L13, M8137, E83CC, ECC803s, Telefunken ECC808, E283CC, 7729 und 12BZ7
audio tube 12AU7A, ECC 82, 6189W Tung-Sol, JAN-5814A GE, 5963, B329, 13D8, CV4003, M8136, B749 Genalex, E82CC, ECC802s Telefunken
noval tube ECC81, 12AT7, E81CC Siemens, ECC801s Telefunken, CV455, 7728 USA, M8162 british valve, CV4024 military grade
tube types E88CC, 6922, 6DJ8, 6N23P, 6N1P, ECC88, CCa, 6Н23П-ЕВ, CV2492, 6H1n, 6H23n-EB, 6H23n-EV, 6N11
driver tubes 6SN7GT, 6N8S, 6H8C, VT231, CV278, 6180, 6D2, CV1988, 5692, B65, 6N8J, ECC32
input tube 6SL7GT, 6SU7, ECC35, CV1985, VT-229, 6113, 5691
tube types ECC99, 12BH7A, 7032, 6913
valves-tubes 5670W, 2C51, 6N3P, 6Н3П-Е, 6H3n, 6CC42, 396A, CV2831
other double triodes
