Constant Voltage
- Audio Telex ACM1202PAudio Telex ACM1202P
- Audio Telex ACM120PAudio Telex ACM120P
- Audio Telex ACM2150Audio Telex ACM2150
- Audio Telex ACM2151Audio Telex ACM2151
- Audio Telex ACM250PAudio Telex ACM250P
- Audio Telex ACM604PAudio Telex ACM604P
- Audio Telex AT250BAudio Telex AT250B
- Audio Telex DCM120Audio Telex DCM120
- Audio Telex DCM250Audio Telex DCM250
- Audio Telex DCM500Audio Telex DCM500