Pink noise when Studio monitors are Maxout


I was using my US22mkII with studio monitors max out. Everything was fine. Then I decided to use MR816csx with the project that I noticed as soon as I turned MR on a very loud noise was coming out of the speaker. I turned the volume of speakers to halfway, now the noise is much much less.

How can I get rid of the noise especially when I have my monitors all the way up?

Any help would be appreciated.