4.2 Operating modes
The C1 D/A controller has two main operating modes: Normal mode and Menu mode. Normal mode is used to access standard
preamplifier controls whereas Menu mode is used to configure the unit. The C1 also includes Shortcuts for quick access to selected
Menu mode items. Shortcuts are user programmable and most Menu mode items can be selected as Shortcuts.
4.2.1 Normal mode
Normal mode is used for standard preamplifier functions. When powered-on, the C1starts in Normal mode. The display looks as
follows:
Normal mode display elements
(1) Incoming audio sampling frequency (first number, replaced by “DSD” when playing an SACD DSD layer through CH Link) and DSP output
frequency (either 705.6 or 768 kHz) feeding conversion chips. Shows the over-sampling (or DSD to PCM conversion) performed by the C1's
DSPs.
(2) Mute indication. If the 7 symbol is present, the output is muted
(3) Analog output level. Only displayed when C1 is used as a preamplifier. When C1 is used as a pure DAC (selectable through C1's menu), output
level is set to 0 dB and not mentioned in this display area.
(4) Polarity (phase) indication. If the H symbol is present, polarity is reversed
(5) External power supply indication. When an external power supply is connected and engaged, < symbol is displayed and internal power supply is
turned off
(6) Clock source indication (internal, audio in, or clock frequency when an external clock is selected as the clock source)
(7) Lock indication (J or K). Tells if the unit is locked to a clock source or not
(8) Input source name. Each input source can be renamed through C1's menu
28 C1 User Manual Rev 1.9
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