Adjustable level of each volume
Subaru Impreza / Subaru Impreza Owners Manual / Audio / Hands-free system (if equipped) / Using the Hands-free system / Adjustable level of each volume

See also:
Certification for the Handsfree system
FCC WARNING
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
NOTE
This device complies with Part ...
Turbo models
The engine is designed to operate at maximum performance using premium unleaded
gasoline with an octane rating of 93 AKI or higher. If 93 AKI fuel is not readily
available in your area, unleaded g ...
Non-turbo models
The non-turbo engine is designed to operate using unleaded gasoline with an octane
rating of 87 AKI or higher. ...
