ECC83
Philips
Welter EL34-S
Philips E88CC
Orion EL34 6CA7
Fullmusic 300B
RCA 5R4GYB
Svetlana 6550 C
Philips 12AU7
V.A.L. 300B
Audio Research
Ultron ECC82
Hoges EL12 375
Electro
Telefunken
12AU7 Röhren
Golden Dragon
National 12AU7
Siemens ECC82
Electron EL-34
RCA 5881
GEC KT66
Raytheon
Telefunken EL41
Ediswan ECC81
Telefunken
Philips ECC86
KR Audio KT88
EL34 Röhren
GE 6550 A
Telefunken
6550 Röhre
National 6922
Mazda 12AT7
12AX7 China
Valvo PCC88
RSD EL34
Shuguang 300B S
General
Philips ECG
Tube Audio Bonn
AEG EL34
EAT 300B Röhren
Siemens ECC88
RSD EL84
Siemens EL84
Angeschaut