Valvo ECC81 E88CC Röhren Philips ECG Siemens ECC85 ITT Lorenz Hoges ECC81 Psvane 12AU7 -T Valvo PCC88 Telefunken Philips AEG E88CC National 12AX7A National 6CG7 Siemens ECC83 Standard Brand National 12AU7 Siemens ECC82 12AX7WA Thorens ECC82 Tungsram ECC82 Philips ECG Philips 12AU7 RAM 12AX7 Paar Ultron ECC82 ECC82 Röhre Sovtek 12AX7LPS Electro Philips E88CC Sylvania 6189W Philips 6CG7 Electro AEG ECC83 Paar Gold Aero 6922 Golden Dragon Philips Siemens E88CC Haltron ECC82 Tesla E83CC 5814A E82CC Telefunken Mullard E88CC Telefunken National 6922 Sovtek 6922 ECC83 National 6922