PreSonus StudioLive 3232 st, Digital, 2 st, Headphone output, RCA stereo input, USB, Firewire, RCA stereo output, AUX send, 2 st, 2 st, Suitable for PA use/Rack mount, Support for more channels through the expansion site, App control, Talkback, Subgroups, Phantom power, Compressor/Limiter, Delay, Reverb