OPERATING INSTRUCTIONS FOR DAC204 24Bit / 192kHz D/A CONVERTER OPERATION
Weiss Engineering Ltd., Florastr. 42, CH-8610 Uster, www.weiss.ch weiss@weiss.ch Page 5
OPERATION
Unpacking and Setup of the DAC204
Carefully unpack the DAC204. The following items should be
enclosed:
• The DAC204 D/A Converter unit
• A power supply
• This Owners Manual
Power Supply Connection
Connect the enclosed power supply or any other appropriate
supply to the input socket. See the Technical Data section for
more information on the power supply.
USB driver
For MacOS systems the DAC204 des not need any USB driv-
er. For Windows systems the appropriate USB driver has to
be downloaded from our website at the INT204 downloads
page. www.weiss.ch
Input Connection
The DAC204 operates either with the RCA input, the optical
Toslink input or the USB input. Select the input with the
appropriate switch. The data format can be either AES/EBU
or S/PDIF. The USB input also supports DSD64 and DSD128
streams. Note, the LEDs indicating the sampling frequency
are active for the USB input only.
Output Connection
Connect your preamplifier or power amplifier to the output
connectors of the DAC204.
Use either the symmetrical (balanced) lines (XLR) or the
asymmetrical (unbalanced) lines (RCA). It is also possible to
use both outputs simultaneously. We do not recommend to
connect a low impedance headphone and an amplifier sim-
ultaneously though, as the headphone may compromise the
signal going to the amplifier.
If the XLR outputs are used to connect to an unbalanced
input then make sure that XLR pin 1 is used for the ground
connection and XLR pin 2 is used as the hot signal. XLR pin 3
must be left open.
If there isn’t any signal at the DAC204 outputs check the
power switch / LED and also make sure the sampling fre-
quency is in the range supported. See the Technical Data
section for details.
Output Level
The output level can be set with the two switches in 10dB
steps. Four different output levels can be selected.
Downsampling
The USB input signal is treated as follows:
- Sampling frequencies between 44.1 and 192 kHz are
passed unaltered.
- Sampling frequencies of 352.8 or 384 kHz are downsam-
pled to half of their value, i.e. to 176.4 or 192 kHz.
- DSD64 or DSD128 signals are converted to PCM with the
parameters according to the settings of the switches. I.e. a
sampling frequency of 88.2 or 176.4 kHz can be selected.
Plus a word-length of 16 or 24 Bit. These selection switches
may make sense if an external D/A Converter is connected
to the digital outputs of the DAC204. If only the internal D/A
Converter is used we recommend to set the switches to
176.4 kHz and 24 Bit.
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