Technical information

Apollo Software Manual Chapter 6: Console Settings 118
Sample Rate
This setting defines the sample rate that is used for Apollo A/D and D/A conversion and
UAD Powered Plug-Ins processing. When using UAD Powered Plug-Ins, higher sample
rates require more UAD DSP resources.
Important: When the Clock Source parameter is set to use any external clock
source, the sample rate must be manually set to match the sample rate of the
external clock.
Note (Apollo Twin and Apollo 8p): If the current digital input setting is S/PDIF
and the sample rate is changed to a rate higher than 96 kHz, the clock source is
changed to Internal and the S/PDIF inputs are no longer unavailable.
Clock Source
This setting determines the master clock source for A/D and D/A conversion. The avail-
able values are:
Apollo, Apollo 8, Apollo 8p – Internal clock or external clock from S/PDIF, ADAT, or Word
Clock
Apollo 16 – Internal clock or external clock from AES/EBU or Word Clock
Apollo Twin – Internal clock or external clock from S/PDIF or ADAT
If the Clock Source setting is not set to Internal and the external clock signal is not
detected, then the text in the Clock Source display is RED (if this occurs, verify connec-
tions and external clock device settings).
Note: Only one device in a system can be the master clock. This setting must
match the host DAW setting or audio glitches and/or distortion could occur.
Digital Mirror
This setting configures the S/PDIF outputs (Apollo, Apollo 8, Apollo 8p) or AES/EBU out-
puts (Apollo 16) to mirror the Monitor 1 & 2 outputs. This feature is typically used when
connecting to the stereo inputs of other devices with digital inputs such as a speaker
system, stereo recorder, or external D/A converter.
When Mirror mode is ON, the Monitor Level knob controls both the digital output level
and the analog monitor output level (these digital outputs are post-fader when mirrored).
This setting is unavailable with Apollo Twin, which does not feature digital outputs.
Note: When set to ON, any DAW outputs and/or Console aux outputs that are rout-
ed to these digital ports will not be heard, because the digital ports are switched
to output the monitor bus instead.