I purchased the MP100 because of the 12' run to the C50 from the VPI TT. It also allows more versatile to change from MM/MC cartridges on both TT. I also use XLR connections from the MP100 to the C50. Since your set up which is nice by the way is a short distance like my Linn Sondek LP12 to the C50 set up you will not gain any sound quality advantage from the MP100. If your going to add more turntables to your system or record vinyl to digital files I would recommend it. Hopefully this helps you !
Thanks for your comments, and to answer your question about McIntosh speakers. I did not pay $10,000 for them which is the going price new. They are a true 4 way full range speaker. The sound stage is amazing no matter what music you choose. Are they worth $10,000 ? Absolutely ! Hope this helps.
Sounds like you have a nice system ! Thank you for the comments, its hard to turn off it sounds incredible at any volume or music source. I'm 61 yrs old and retired and have been a McIntosh fan for a long time !