FL Studio supports audio time stretching and pitch scaling, beat slicing, chopping, and editing of audio, and as of version 12.9 it can record up to 125 simultaneous audio tracks. VoiceMeeter Banana allows you to take input from up to 3 hardware devices and 2 software applications and mix them together, sending that output to up to 3 hardware devices and 2 software devices while also having recording functionality.
Zoom LiveTrak L-8 8-Channel Digital Audio Mixer and Recorder.
