Roon Room Correction- Who Has used it? Opinions please!

I haven't done it, as I am rather old school and don't want to introduce unknown/unwanted time smears to my music.

I do know that many have used a mic for calibration. 

As for software, some use apps on their smartphone.

Please don't think I am a Luddite, but digital room correction is not a panacea for all the sound reproduction issues. It masks obvious issues, but in the end, is not the cure.

If you are looking for a simple sound correction for issues with a simple (non critical listening) system. Roon correction should be an easy way to go.

But, if you are really serious about sound reproduction, I would advise against it.

My 2.4 cents

Bob

AFAIK, you need to get a mic and measurement program to see what the response is. Then you can enable EQ in Roon to change it (say to eliminate nulls). At present, Roon is not a complete solution, as it neither measures nor generates the filters used to perform DRC. It will take filters and apply them.

I have used its EQ for other purposes and found it quite good.

You can use Roon's DSP based EQ without any microphones, however if you want to do actual room correction with any sort of automated algorithm then a mic will be required.