Italy is Wisycom's country. You won't have any trouble with Wisycom !... And you'll see that they are very, very usefull in Italy....In Milano I found only two free DAB channels !
Oups that is not clear on the specs sheet for mixpré3 to 10 I can read that mic gain is 76 dB AND fader +20 dB .Does it mean that the 20 dB of the faders is digital gain ?
I think the the TX gain is not set properly. In the Wisy transmiter there is a presset called "Line" it works very good. As NCG says you can also output a tone at 0 dBfs ( or 20dBu) and set the TX level in order to be just at the clipping limit.
The MPR output max level is at 18 dBu and the MCR42 at 12 dBu.
I use this excellent phantom power with my wirelesses : Lebel audio PWL III
http://www.lebel-audio.com/index.php/fr/produits
Very good sound, very low consomption (only one LR6 for one day).
I sent two emails to Wisycom. One a few months ago, the other one a few years ago. I received a very prompt answer for each emails, and a precise answer to my question.