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Source Selection
The active input source can be selected by rotating the Source Selector Knob. The Front Panel Display will show a
Source Selection screen, with the active input source highlighted. When the Source Selector Knob is rotated in
either direction, a new input source is highlighted. Once you settle down on an input source by leaving the highlight
cursor on it or by pressing the Source Selector Knob, the new input source becomes active and the Front Panel
Display returns to the Home Screen.
Remote:
You can also switch input sources by directly pressing the appropriate source button on the remote.
Volume Control
Rotating the Volume Knob clockwise or counter-clockwise will increase or decrease the volume level. The Volume
screen will appear to provide a visual reference for the volume level. The HA-1 implements its volume control with a
pure analog signal path. The numeric dB value displayed on the screen is based on the measurement of the Volume
Knob position. It indicates the approximate gain or attenuation level of the Pre-amplifier Output relative to the input
signal. It is normal for the display value to vary a few dB when the Volume Knob moves in the very low range due to
the logarithmic nature of the volume control curve. The actual headphone volume depends on the headphones’
sensitivity, the input signal level, and the Headphone Gain setting.
Remote:
You can also adjust the volume level by using the Volume +/- button on the remote control. The Front Panel Display
will show the Volume screen and the Volume Knob will also rotate accordingly.
Note:
It is possible that the Volume Knob may be inadvertently rotated when the HA-1 is off. In order to protect the
output device, there is a protection mechanism built-in to the HA-1’s volume control. When the device is powered
on, if the Volume Knob position is higher than the previously used volume level before the unit was powered off,
the Volume Knob will automatically return to the previous volume level. If the Volume Knob position is less than
the volume level before it was powered off, the HA-1 will keep the new volume level.
Source
Volume
Balanced
HEADPHONE AMPLIFIER HA-1
iPod/iPhone/iPad
19


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