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INTEGRATED AMPLIFIER L-509Z
9. Phone jack (PHONES-2)
Insert your standard 6.3 mm headphone plug into this out-
put socket when listening with stereo headphones. Even
when a headphone jack is inserted, signals to the speaker
output terminal are not interrupted. To listen to music using
only your headphones, set the speaker selector to OFF.
10. Phone jack (PHONES-1)
This jack is an output jack to be used with a 4.4 mm stereo
headphone plug.
Even when a plug is inserted in the same way as PHONES-2,
signals to the speaker output terminal are not interrupted.
The PHONES-1 (di. 4.4 mm) phone jack of this unit is a
ground separation type connection model with an unbal-
anced amplifier.
Connection of compatible headphones allows you to enjoy
listening with high separation performance thanks to inde-
pendent wiring of right and left (–) signals.
11. Mute button (MUTE)
When this button is pressed and the mute function is
activated, and the operation indicator will start blinking and
there will be no audio output.
Pressing this button again sets the mute function to off.
12. Line straight button (LINE STRAIGHT)
Enhances the purity of the sound quality by bypassing
circuits such as balance control and tone control.
OFF (Line straight indicator off):
Line straight off/bypass off
ON (Line straight indicator on):
Line straight on/bypass on
• This button toggles the line straight function on and off.
The line straight indicator lights up when the line straight
is set to on.
When the line straight button is set to on, the balance
control, tone control, subsonic, monaural and loudness
cannot be adjusted.
13. Balance control (BALANCE)
Adjusts the relative volume of the right and left channels.
Rotating the control counterclockwise gradually cuts the
volume of the right channel, rotating the control clockwise
gradually cuts the volume of the left channel.
This knob should be set to the center position under normal
conditions, and rotated to make adjustment if necessary.
When the line straight function is set to on, this control does
not function.
14. Tone control for treble
TONE CONTROL (TREBLE)
Controls the frequency characteristics of the high-frequency
range.
Setting this control to the center position provides flat
frequency characteristics. Rotating this control clockwise
enhances the high-frequency range, and rotating this control
counterclockwise attenuates the high-frequency range.
When the line straight function is set to on, this control does
not function.
15. Tone control for middle-range
TONE CONTROL (MIDDLE)
Controls the frequency characteristics of the middle-
frequency range.
Setting this control to the center position provides flat
frequency characteristics. Rotating this control clockwise
enhances the middle-frequency range, and rotating this
control counterclockwise attenuates the middle-frequency
range. When the line straight function is set to on, this control
does not function.
16. Tone control for bass
TONE CONTROL (BASS)
Controls the frequency characteristics of the low-frequency
range.
Setting this control to the center position provides flat
frequency characteristics. Rotating this control clockwise
enhances the low frequency range and rotating this control
counterclockwise attenuates the low frequency range.
When the line straight function is set to on, this control does
not function.
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