Master and Group Channel Strips

The Master channel strip and the channel strips for Groups contain controls which will be familiar from the Audio Track Channel Strips with a few omissions which are not pertinent for the Master or Groups as they are only channels - or 'buses' -  and not 'tracks' as such.

As can be seen, there is no Arm button or Input Selector as you cannot record to a Group or the Master - again, they are not tracks. They do not have FX Sends either as these cannot be used on the Master channel or Groups (though, of course, Groups might be used by the FX Sends of audio and MIDI tracks as FX Returns). As such, unlike the audio and MIDI tracks, no Sends are displayed on their FX Grid setup, see below.

It is also worth mentioning the Output options for the Master channel and Group channels:

Pressing the Output button on a Group channel strip will give the option of No Output, Master or any other Group/Bus which is present in the project. If you use a USB audio interface with more than 2 outputs in combination with the eXtream Software Development USB Audio Driver, you can also assign the output of the bus to a specific stereo output pair of the USB audio interface. For example, if you have 6 mono outputs, options 'Stereo 1-2', 'Stereo 3-4' and 'Stereo 5-6' can be selected. Please note that you cannot route audio from two busses to one stereo hardware output pair: the selection needs to be unique. You can use this feature for example to provide separate submixes or route to outboard effects.

Pressing the Output button on the Master Channel Strip opens the following Output Selection dialog.

The options available for the Master output depend on whether you have a USB audio interface attached or not. If not, the only option available will be 'Android', as shown above, meaning your device itself, its own speakers or headphone output. But, if you do have a USB audio interface attached, and you are using the eXtream Software Development USB Audio Driver, the default Master output will switch to use that USB audio interface instead.

Lastly, it's important to realize that Groups can be renamed by long pressing on their current name on their channel strip. Alternatively, long pressing in the area on their channel strip just beneath their name will open the Group Options seen here.

As can be seen, these options allow you to add further Groups to your project (also possible with the Add bus button at the top of the Master Screen), remove the Group long pressed upon to open these options, and also another way to rename that Group.