this is a pdf-file from someone who apparently gathered all info he could find about beyer mics in one file. the 111 is mentioned there as well, only it's in french...

Micro BEYER M111
· Micro dynamique omnidirectionnel
· Réponse en fréquence : 60-15.000 Hz
· Impédance : 200 W
· Sensibilité ...

thx for the replies. i won the auction for the mic, so if anyone's interested i can tell you if i liked it after i received it.
i neither think that a switch generally lessens the quality of a mic. funny thing is, i've got 2 m500; one with and one without switch and the latter sounds considerably ...

has anyone used this mic or knows sth about it? the only site with information about it i could find was this one (pdf-file). i'm interested in it because of this auction. you can see a picture of it there as well.