Which Mackie mixer should I choose for USB recording?

The Mackie ProFX12v3 is a 12-channel analogue mixer with USB. It’s worth considering if that channel count suits your setup, but don’t assume USB alone means you can record every input separately: check its recording capabilities against your needs before buying.

The Mackie Onyx16 offers 16 channels and explicitly includes multitrack USB. That makes it the clearer choice here if you want separate recorded tracks for later mixing rather than committing everything to one mix.

Before choosing, count the sources you’ll connect at once and check the input layout—not just the headline channel count. For recording, also confirm how many separate USB tracks you need.