6
Treble Control goes from above the high midrange control out to the top of the normal
audio range. It's used to enhance brightness and sharpness in the overall tone settings.
Equalizer Bypass Switch
This is available only on the footswitch. FT/SW (A) Jack. Switch (1). This allows you to
set up a special tone setting on the 4 band tone controls and then bring it in and out as
needed by bypassing the tone setting back to straight wire flat.
Auxiliary Input Level Control
This controls the mix level of the Auxiliary inputs from the back panel. It has 6dB of gain
so you can properly mix your MP3 audio files, tunes, tracks or drum machine with your
bass at normal live playing levels.
Master Level Control
The Master Level Control is a level control, not a gain control. It is the final control
before the amplifier input. Use this control to set your overall sound level for the room
when you are playing.
Amplifier Standby Switch
This allows you to put the amplifier in the standby mode. This can be useful in the
studio and other places where you want to run the preamplifier but do not need the
amplifier to be operating.
Power On LED
The power on (green) LED turns on when unit is powered up and stays on as long as
unit is in normal operating condition. If the green power on LED is not on after you
power on the main switch. The unit has a problem and is not in proper operating
condition. If the green power on indicator will not illuminate, the unit has an operational
problem and needs to be checked out by your dealer or authorized DNA service center.
Peak Level LED
The amber colored Peak Level LED flashes briefly when your unit
’s
output amplifier
exceeds 0.01% total harmonic distortion. This function is basically a peak output
indicator, though it comes on at well below the actual peak output of the amplifier.
System Protect LED
Under normal circumstances, you should only see the red system protect LED come on
when you're turning on or turning off your unit. It should extinguish after the start cycle
or stop cycle is completed. If it remains on them there is a problem with the operating
system or with the operating conditions of your amplifier that you will have to check.
Typically, you would check the AC power condition and both the input and output cables
to make sure everything is in good working order. Then turn off and restart the
amplifier. That should normally resolve the problem. If the problem persists even with
the inputs and outputs unplugged, and the protect LED remains lit. It is likely your unit
has a board level electronic fault in needs to be serviced by a DNA dealer or service