Naim Audio NAP S1 - Manual (Page 14)

4 . 2 A U D I O I N P U T G A I N A D J U S T M E N T
The input gain for each of the five NAC S1 inputs can be individually adjusted to compensate for
different source output levels. An adjustment range of plus or minus 7dB in 1dB steps is available.
Any of the inputs can also be switched to “unity gain” mode where NAC S1 volume control is
disabled. Unity gain enables the NAC S1 to integrate with audio-visual systems where a multi-
channel home theatre processor takes over system volume control.
To adjust the input gain proceed as follows:
• Using the remote handset or the top panel input buttons select the preamplifier input to
be adjusted.
• Press and hold both the connection panel down and up buttons until the gain indicator flashes.
If the specific NAC S1 input is in its default gain state the 0dB indicator will be flashing.
• With the indicator flashing use the down or up button to increase or decrease the gain.
• Press the select button to save the new input gain setting and leave the input gain adjustment
routine. The input gain will now be set at the desired level.
To switch an input to unity gain mode proceed as follows:
W A R N I N G . Unity gain must be used with great care as any signal connected
to a unity gain input will be passed to the power amplifier at maximum output level.
• Using the remote handset or the top panel input buttons select the preamplifier input to be
switched to unity gain. Ensure that any source connected to the input is switched off.
• Press and hold both the connection panel down and up buttons until the gain indicator flashes.
If the specific NAC S1 input is in its default state the 0dB indicator will be flashing.
• With the indicator flashing use the up button to increase the gain to +7dB.
• Press and hold the up button until the +7dB indicator extinguishes and the unity indicator
flashes.
• Press the select button to save the unity gain setting and leave the unity gain selection routine.
Unity gain will now be engaged on the selected input.
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