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2. Using the optical connections
In addition to the two analogue inputs, the Clarett 2Pre has an ADAT input port (OPTICAL IN) which
can provide an additional eight audio inputs at 44.1/48 kHz sample rate, four at 88.2/96 kHz or two at
176.4/192 kHz. Using a separate 8-channel microphone preamplier equipped with an ADAT output
– such as the Focusrite Clarett Octopre– provides a method of expanding the Clarett 2Pre’s input
capability.
Computer
running DAW
and Focusrite Control
To inputs 1 & 2
on front panel
To inputs 1 & 2
on front panel
Optical ADAT connection (TOSLINK)
Up to 10 Mic/Line Sources
Octopre MKII
8ch Mic Amp
The OctoPre’s OPTICAL OUT port is connected to the Clarett 2Pre’s OPTICAL IN port with a
single TOSLINK optical cable. Stable ADAT synchronisation may be achieved by setting the
Clarett 2Pre’s clock source (in Focusrite Control) to be the ADAT format signal at the OPTICAL IN
port.
Note: when interconnecting two digital devices by any method, always ensure both are set to use the
same sample rate.
The additional inputs from the optical port may be routed using Focusrite Control in exactly the same
way as the other inputs. The additional inputs can form part of any musician’s headphone mix, as
required.
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