Unmuted
PHASE POLARITY In phase
Out of phase
None None
CLOCK SOURCE
(individually
selectable for each
input)
Audio In
Internal Clock
Synchro BNC (75 Ohm)
Synchro BNC (Hi-Z)
SRC
SYNC_IO board to
choose some of these
clock sources
Audio In clock source is available in all cases for
digital in board inputs.
SRC adds an asynchronous sample rate converter
stage that allows the C1 to lock even on S/PDIF
sources that do not comply with AES requirements.
Internal Clock is the the default choice for computer
sources (USB audio and Ethernet streaming) where
C1 is the clock master.
Synchro BNC (75 Ohm) and Synchro (Hi-Z) are only
available when the SYNC_IO board is installed.
SYNC_IO offers choice of 75 Ohm or high-
impedance on its BNC clock input.
INPUT TYPE Disabled
Normal
Processor
“Disabled” inputs cannot be selected anymore when
scrolling though inputs (with remote control or
encoder).
For “Processor” inputs, the C1's volume control (in
processor mode) is not applied (no attenuation!)
Only available inputs (depends on hardware
configuration) can be enabled/disabled in the menu
INPUT GAIN
(individually
selectable for each
input)
-6 dB to +6 dB by 0.5
dB steps
None None
BALANCE Left +6 dB to Right +6
dB by 0.5 dB steps
None None
MONO MODE Stereo
Mono Left
Mono Right
None When “Mono Left” (respectively “Mono Right”) is
selected, the left (respectively right) audio input is
mapped to bot C1's outputs
PCM FILTER TYPE Minimum Phase
Linear P. apodising
Linear P. sharp
None Choice of different filter types for PCM audio input.
Linear P. indicates linear phase.
Sharp corresponds to a steep cut-off. Apodising
filters reach full attenuation at half the sampling
frequency to minimize transition band aliasing.
36 C1 User Manual Rev 1.9
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