aac/m4a 10 Channel Export

I can get 8 channel m4a encode with Audacity using qaac with the guide below but I need 10 channels.

AAC supports inclusion of 48 full-bandwidth (up to 96 kHz) audio channels

What’s the problem?

I need to get 10 channels
Drums-10ch-m4a.gif

You will need to use an encoder that supports 10 channels. Audacity’s “FFmpeg libvo_aacenc” only supports up to 8 channels.
Perhaps you could use OGG instead?