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Dr. DAC prime
3.2 Digital to Analog Converter
Dr. DAC prime works as a digital to analog converter with extremely high quality.
The digital signal source can either be the optical or coaxial S/PDIF input on the rear panel (the
SOURCE switch has to be set to DIGITAL in that case) or it can be the playback from your audio
application when Dr. DAC prime is connected to a computer via USB (in that case, the SOURCE
switch has to be set to USB).
The signal will be sent out through the line output (RCA connectors) on the back panel of Dr. DAC
prime and will also be sent through the headphone outputs (see section 3.3).
3.2.1 Fixed Output Level
Dr. DAC prime has a great feature that ensures to provide the maximum dynamic range of any
signal by providing a fixed output level (at the max. possible setting). To activate this, the LINE
OUTPUT LEVEL switch on the back panel has to be set to FIX.
If you are changing the volume of the playback signal, you would typically do this on the amplifier
connected to the line output of Dr. DAC prime.
3.2.2 Variable Output Level
If you need to control the volume directly on Dr. DAC prime (i.e. if you have connected it to active
monitoring speakers), you should set the LINE OUTPUT LEVEL switch on the back panel to VAR.
In this case, the playback volume for the line output signal is controlled by the VOLUME
potentiometer on the front panel.
3.2.3 Mute Function for Line Output
The MUTE switch on the front panel allows you to mute the playback signal temporarily (if set to
ON) for line output only. The headphone output signal (see section 3.3 for reference) is not affected
by this.
3.2.4 192kHz Upsampling
Dr. DAC prime provides a powerful function to upsample any incoming digital signals to a 192kHz
sample rate. To enable the upsampling function, the UPSAMPLE switch has to be set to 192kHz,
otherwise to BYPASS.
3.3 Headphone Amplifier
Dr. DAC prime can be used as a powerful headphone amplifier.
It provides two individual headphone outputs on the front panel, one with a 1/4" and one with a 1/8"
TRS connector, allowing you to connect any current professional headphone without the use of an
adapter. Both headphone outputs send out the same signal and can be used simultaneously.
All input signals (as selected via the SOURCE switch on the front panel) are routed to the
headphone output. This means you can listed to signals from the ANALOG, USB and DIGITAL
inputs, depending on the switch settings.
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