Connecting An External Unit - Aiwa XP-R970 Operating Instructions Manual

CONNECTING AN EXTERNAL UNIT -
Use a commercially available connection cord which has
a 3.50 stereo mini-plug at one end and two plugs at the
other end.
connect the stereo mini-plug to the PHONEWLINE OUT
jack of the unit and connect the phono plugs to the analog
input terminals of the external unit.
Note
Turn off the power of both units before connection.
DO NOT connect to the PHONO inputs of an amplifier
(with a built-in phonoequalizer-amplifier).
Adjust the volume and DSL on thk unit.