the only help I can offer regarding the B&K Pro 10 is this -
I have and have had lot's of B&K gear and it's all great, especially for the $. I had the CS-117 preamp which is the same vintage, and I believe derived from the Pro-10. I didn't use the phono stage (and I know it didn't have MC), but the preamp was quite nice sonically - incredibly nuetral which is more than I can say for other pre's I tried in that same vintage and price range (Adcom, Parasound). It was also dead quiet.
I have and have had lot's of B&K gear and it's all great, especially for the $. I had the CS-117 preamp which is the same vintage, and I believe derived from the Pro-10. I didn't use the phono stage (and I know it didn't have MC), but the preamp was quite nice sonically - incredibly nuetral which is more than I can say for other pre's I tried in that same vintage and price range (Adcom, Parasound). It was also dead quiet.