dCS Debussy DAC User Manual Software Issue 2.2x
August 2013
Debussy DAC Manual v2_2x.docx Page 18 English version
REAR PANEL
Figure 8 - Rear Panel
Analogue Outputs
The unit features separately buffered Balanced Outputs (N) on XLR connectors and Unbalanced
Outputs (O) on RCA connectors. The Balanced Outputs should be connected to true balanced
inputs only. If your preamplifier / power amplifier has unbalanced inputs (even if the inputs are on XLR
connectors), please use the Unbalanced Outputs instead.
Output Level Switch
The O/P Level switch (P) sets all outputs to either 2V rms or 6V rms at full scale. When you set up
your system, choose the Output Level setting that gives a comfortable listening level with the Volume
set between –10dB and –20dB. The difference between the two settings is 9.5dB.
AES Digital Inputs
The AES1 and AES2 inputs (Q) can be used individually at 32, 44.1, 48, 88.2, 96, 176.4 or 192kS/s or
with DSD in DoP format.
If both inputs are connected to a Dual AES source and AES 1 + AES 2 is selected, they can be used
together as a Dual AES pair at 88.2, 96, 176.4 or 192kS/s or DSD data in DoP format.
!
For Dual AES mode to work correctly, the source must actually generate Dual AES data,
not just single AES on 2 connectors (which gives a mono output)!
Dual AES is available from dCS Upsamplers, some dCS Transports and some sound
cards.
SPDIF Digital Inputs
The unit features 2 co-ax SPDIF inputs (R) on RCA phono (SPDIF 1) and BNC connectors (SPDIF 2).
Each input will accept data at 32, 44.1, 48, 88.2, 96 176.4 or 192kS/s or DSD in DoP format.
Word Clock Input
The W/Clock In connector (S) will accept standard word clock from the source equipment or a master
clock at 32, 44.1, 48, 88.2, 96, 176.4 or 192kHz.
!
The clock frequency MUST be an exact multiple of the data rate (see page 16),
otherwise the system will not lock to word clock and the indicator will flash.
The source MUST be locked to the same clock unless the USB interface is selected,
otherwise the system will not be synchronised and periodic clicks will be heard on the
outputs.
Word clock is used for synchronisation only, it does not carry digital data.
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