Phonak DigiMaster X Installation Instructions Manual page 6

Connection to Calypso CA-1000
The CA Config software program is required to set the gain of the CA-1000.
Terminate the 2-pin Phoenix connector to the
CH4+/CH4-(Bal) series-socket as depicted above.
Shielding
The screenshot show:
• Set-up on channel 4 for DigiMaster X
• Mono, Gain 32
• Fine-tune the volume
• Change the 'PreSet Vol:' to the same value as the Master out volume
Identical values