| Year | Type | Ref. | Tubes |
| 73 | 5000T >>Siemens RS502 | 50p | |
| 72 | Compact 1000 quadrosound | 10p | |
| 76 | Compact 1100 quadrosound | 18p | |
| 72 | HI-FI-Receiver 3401T | 12p | |
| HI-FI-Receiver 3402T | 12p | ||
| 71 | HI-FI-Receiver 4101T Syntector Quadrosound | 12p | = Siemens RS172 / Hersteller Körting |
| PV1 Phono-Verstärker | La50 | ECC83 | |
| PV2 Entzerrer-Verstärker | La50 | OC71 | |
| 72 | Receiver 1000T Quadro-Sound | 12p | |
| 72 | Receiver 1000TE Quadro-Sound | 12p | |
| 69/70 | Syntector 4000T | 6p | |
| VE101 Phono-Verstärker | La50 | ECL82, AZ41 |