ASIO Target

Streams the project's mixed audio out to a connected ASIO sound device for low-latency professional playback. Useful for routing program audio to studio monitors, sending the mix into a hardware audio mixer or interface, feeding broadcast playout chains, or monitoring a stream's audio on dedicated speakers without going through the Windows audio stack. Available devices come from ASIO drivers installed on the host; pick a device, choose a channel offset and audio mode (mono or stereo), and start the target to begin playback.

ASIO Target - Settings

Property	Description
`Autostart when application starts`

Devices

Devices — pick which ASIO device receives audio and check how many output channels it has.

Property	Description
`ASIO Device`	Drop-down listing every ASIO driver detected on the host. The list is populated by the operating system; if a device is missing, install or repair its ASIO driver and reload the project. Selecting a device initializes it and reports its channel count via `TotalOutputChannels`.
`Total Output Channels`	Number of physical output channels reported by the selected ASIO device (read-only, debug). Used as the upper bound for `OutputChannelOffset`.
`ASIO Control Panel`	Opens the selected device's native ASIO control panel where buffer size, sample rate and routing can be configured. Provided by the device driver, not by Composer.

Output Channel

Output Channel — pick which channels on the ASIO device receive audio.

Property	Description
`Audio Mode`	Whether to send a single-channel (mono) downmix or a two-channel (stereo) signal to the device. `Stereo` uses `OutputChannelOffset` plus the next channel, while `Mono` uses just `OutputChannelOffset`.
`Channel Offset`	1-based index of the first ASIO output channel that receives audio. [min=1, max=512 — clamped to `TotalOutputChannels`]. For example, set to `3` on an 8-channel device in `Stereo` mode to send the left/right pair to channels 3 and 4.
`Output Channel`	Human-readable description of where audio is currently being routed (read-only, debug). Reflects `OutputChannelOffset` and `AudioOutputMode`.

Action

Action — start and stop audio playback to the selected ASIO device.

Property	Description
`Device Status`	Current device state — selected, initialized, playing, stopped or error (read-only, debug). Drives the enabled state of the Start/Stop and ASIO Control Panel buttons.
`Play`	Begins sending the project's mixed audio to the selected ASIO device. Initializes the device first if needed.
`Stop`	Stops audio playback to the ASIO device. The device stays selected and can be restarted with `StartCommand` without re-picking it.

Inherits from: AbstractTarget.