Send it to Amir to be measured!
I think that the MRX520 was reviewed here with not so good results.
I will if there's ever a time when I can reasonably live without it for the duration of the shipping and testing. I'm familiar with the MRX520 review and I wouldn't expect the MRX1120 to measure any better. The MRX1120 and AVM60 both have a large toroidal transformer that the 520/720 lack so there's the potential for some differences, but I wouldn't count on it.