Port & Preamp field notes
How many audio-interface inputs do you need?
Choose interface size by simultaneous microphones, instruments, stereo sources, podcasts, drums, live sessions, and future expansion.
Write the largest normal session
Count what records at the same time on an ordinary month, not the imaginary session that might happen once.
Name every input type
Microphone, line, instrument, digital, and MIDI connections solve different jobs even when the total socket count looks generous.
Buy one sensible step ahead
A little headroom prevents immediate replacement. Too much unused I/O adds cost, desk space, and routing complexity.