I have the Focusrite 4i4, but just run stereo sound to my monitor speakers from the PC. You have taken it to another level. I don't really have space for surround in the study, but we have a surround amp in the living room that is nice for movies.
I run a mixer into my Focusrite so I can get various instruments through the speakers or record them. I could record 4 channels at once, but have never done that.
There is something about your post that makes it flicker in peakd, but is fine in Ecency. I wonder if it is something about the images.
When you say flicker do you mean the images? They flicker on phone or on PC?
The 4i4's are nice. Could record a band live with it,
Or a 4 person podcast. If you have a mixer running into 1 channel I'm sure you could do even more insturments/mics.
Like run several drum mics into the mixer first then into one of the channels on the interface.
I got my 2i4 mainly because I wanted the real MIDI ports, and the 2i2's didn't have them. I've never even used them though lol. I've only done midi over USB really. I don't know if there's any advantage to the midi in/out ports over USB.
Even though it's a "surround" system I have them all front-facing but I spread them around on shelves/desk/dresser.
I've had the Bose system for about 20 years now.
The whole page flickers in Firefox on the PC. I think it's the images as that flickers in the feed too.
I bought the interface that would give me more options. I've not used the MIDI, but that is something I want to explore. A lot of devices use USB now anyway. I could set up multiple drum mics, but I have the Yamaha EAD10 that records the whole kit. That also does USB audio. My Roland e-kit does audio and MIDI over USB. I've really got all the gear I need to make music.
I think the main original purpose of MIDI was specifically for live performances.
So if you had a drum-machine and several synths one player could operate any of those with the same keyboard or even at the same time.
This was in the 70's I think that it began so the computer aspect wasn't even part of it yet. On the computer I will use it to play virtual instruments.
Oh also, you can make .midi files that are portable music for any instrument.
I've never seen one of those Yamaha drum mic devices before, but that's pretty cool.