Integrating hardware MIDI synths, samplers & drum machines etc into a computer music studio. You don't need a mixer. This is how to setup your computer DAW (Cubase, Logic, Pro-Tools etc) & External MIDI hardware studio using any 8 Line-input audio interface.

If you do go with this technique, here's solutions to get LOTS of inputs into your DAW:
   • How to get LOTS of inputs into your DAW!