freemate DA-275, Owner'S Manual

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[12]
Stage 2. Checking for
Computer use
1. Stereo / Mono selection switch
1) When you use a monaural headset,
slide the knob to the right (M)
(Factory setting)
* Notes; you can hear very low sound if it
s positioned to the left(S) by
using monaural headset.
2) In a stereo headset supplied by us,
slide the knob to the left(S) to enjoy
stereo sound
* Notes ; If it s positioned to the right (M)
by using our stereo headset or if
it s not our supplied headset,it
cannot be properly worked. At
once,
you should use our
specified stereo headset to
hear stereo sound.
2. PC listening volume controller (DA-275 ONLY)
1) Adjust listening volume of music,
internet phone from computer or
other audio device by sliding.
(DA-275 ONLY)