Sony video Hi8 XR CCD-TRV63 Operating Instructions Manual page 60

Usable cassettes and playback modes
When you play back a dual sound track tape recorded in an AFM HiFi stereo system,
set "HiFi SOUND" to the desired mode in the MENU settings (p. 51).
Sound from speaker
HiFi Sound Playing back Playing back a dual
Mode a stereo tape sound track tape
STEREO Stereo Main sound and sub sound
1 Monaural Main sound
2 Unnatural sound Sub sound
You cannot record dual sound programs on your camcorder.
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