Harman Kardon HK680 - Controls and Functions Overview; Input Selection Controls; Volume and Tone Controls

Indicates that the UNIt susan
is switched on.
Indicates that power
cord is connected to an
AC receptacle and that
the unit is switched off.
Power Switch
Press to turn the unit on and off.
Headphone Jack
Plug in headphones if desired. (With
both Speakers 1 and 2 switches in Off
position, output is supplied only to
headphones.)
CONTROLS and FUNCTIONS
harman/kardon = ik 680
Treble Balance
Lee TA ee) ke ee deo. PU af KZ Bass
Headphones C) cD Cc) Tone Defeat Mono
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Indicates which function Remote Sensor Indicates which function
is selected for listening. is selected for recording.
Speakers Switches Bass Control Volume Control
Push in to select either of two sets of Turn to increase or decrease the Turn to raise or lower output volume.
speakers, or both, or neither proportion of low frequency sound.
(headphone output only). Tone Defeat Switch
Treble Control Press to bypass the bass and treble
Listen Selector Buttons Turn to increase or decrease the control circuitry. (The bass and treble
Select desired input source by pressing proportion of high frequency sound. controls have no effect.)
the corresponding button.
Balance Control Mono Switch
Record Selector Buttons Turn to adjust relative output level of left Press to hear input from any source in
Select desired output source for and right speakers. mono.
recording by pressing the corresponding
button.