Sony WEGA KLV-26HG2 Operating Instructions Manual page 36

Dual Sound
If you select other equipment connected to the TV, set the Dual Sound option to Stereo, A, or B.
i Volume
Even if headphones are connected to the TV, you can hear the sound from the TV speakers.
i Dual Sound
If you select other equipment connected to the TV, set the i Dual Sound option to Stereo, A, or B.
Reset
Only "Treble," "Bass," and "Balance" are restored to the factory settings when you reset the sound.
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Menu System
Mono/Stereo
For a stereo broadcast, select Stereo or Mono.
Mono/A/B
For a bilingual broadcast, select A for sound channel 1, B for sound channel 2, or Mono
for a mono channel, if available.
Press or to turn the volume of the headphones down.
Press or to turn the volume of the headphones up.
Select the "Dual Sound" option of the headphones.
Mono/Stereo
For a stereo broadcast, select Stereo or Mono.
Mono/A/B
For a bilingual broadcast, select A for sound channel 1, B for sound channel 2, or Mono
for a mono channel, if available.
Cancel/OK
Select OK to reset the sound to the factory preset.