Operation Manual

MENU AND DIALOG REFERENCE
765
External Sync Offset
This control should normally only be adjusted when synchronizing Reason to an external MIDI Clock.
Because of the latency problem, you might need to adjust Reason’s playback in relation to the sync master, so that
they are in perfect time. The tempo will not differ between the two, but Reason might play ahead or behind the other
application. You might need to adjust this. However, this is something you only need to do once. The setting is stored
with your other preferences, so you don’t need to adjust it again.
See “Adjusting for Latency” for more information.
Active Input and Output Channels
This displays the number of audio input and output channels the currently selected audio hardware supports. If your
audio card has multiple inputs and/or outputs, and an audio driver that supports this is selected, the “Channels...” but-
ton will be enabled. Clicking this will bring up a window with check boxes for all available inputs and outputs. By tick-
ing these boxes, you are able to select which input and/or output channels should be active.
Active inputs and outputs will be also indicated with yellow and green LEDs in the Reason Hardware Interface - see
“How Reason communicates with your audio hardware”.
Clock Source (ASIO Only)
If you are using an ASIO driver for your audio hardware, you have the possibility of selecting a Clock Source. This is
used for determining the source to which audio playback should synchronize its sample rate. If you have an audio
card and a driver that supports it, you can choose to synchronize to external sources.
Control Panel
If you have selected an ASIO or Core Audio driver, this button brings up a control panel window specifically for that
audio hardware. This may contain buffer settings, routing options, synchronization alternatives etc.