Simultaneous Track Recordings From an Aggregate Device


I’m fairly new to Audacity and Mac. I created an aggregate device with 2 Logitech headsets (and hope to add more later on) but am having trouble separating the two headsets into different tracks on Audacity. I want ultimately want to record several headsets simultaneously, but on different tracks. I’m not sure if this is something that requires a closer look at my setup in AudioMidi or Audacity. Thanks in advance for any suggestions!


Aggregate Device gives one track with two performances smashed together. It’s not a multi-track recorder. As a general rule, Audacity will only record from one thing.

There are multi-track soundcards and we did a review I’m going to try and find.



I’m not sure what you mean to say here.

Aggregate devices will supply every channel separately. The only gotcha is that it doesn’t work with some interfaces (Tascam, for instance). But most brands aggregate perfectly.

In principle, every audio interface that works with OSX should work with Audacity. If needed I could supply a long list, but it’s as simple as that.

There might be some funky Skype/gaming headphone mics out there that don’t follow this rule, but it’s been many years since I saw one of those. Maybe the op has one of those rare exceptions if both mics show up as one channel?

In general it’s not a good idea to try and aggregate more than 2 or 3 interfaces. It works, but the more interfaces you aggregate, the more sync problems you’ll have. You’re better of using one 8-channel interface than trying to use four aggregated 2-channel interfaces.

Please tell us your version of Audacity and Mac OS X (see the pink panel at the top of the page).

Model number of the headsets?

Are you selecting the aggregate device in Audacity’s Device Toolbar? How many recording channels does the aggregate device show in “Recording Channels” in Device Toolbar?

Cyrano’s answer is in principle correct, I think - and yes better to get an 8-channel device or even to daisy-chain two identical 8-channel devices where the devices support that.