I'm new to the forum so I first hope that I am doing this right.
I wanted this also on a new topic and I hope it has not been mentioned before.

It's impossible to plug the analog hole. Here is why.

First you can if you had to, plug your speaker terminals directly to a analog input, then use a peak meter to determine the correct level, sound quality GOOD. Then if you get rid of analog inputs, not to worry you will ALWAYS need a Mic input, you can get stereo mics, and feed the signal with an adaptor to there ports. My whole point is, we are analog, and therefore can never plug the whole, if that would be achieved will stifle creativity among new people. Also plugging it completely will be expensive and difficult since a guitar would have to convert its analog signal to digital for the mixer or amp. This also would effect the sound quality since there are many rates for digital 16-24 bit and then your sampling rate. The higher your go the better your quality, but with analog you have the MAX in quality with a device like that, so its impossible to plug the whole, and a online hacker can sell devices to fix that plug, so no MATTER what you do there is ALWAYS a work around for what man makes man can break.