Hi pd777, I'm not sure if you're still interested but I have a B&K MC101 pre-amplifier available. I took it out of service about 18 months ago when I upgraded my entire system. I am the original owner and it is in the original box and is in excellent condition for its age. I used it in conjunction with a B&K EX442 amplifier (which I also still have) and Legacy Signature speakers (also still have). I'm not sure what it's worth but it is still a very nice pre-amp. Let me know if you're interested. Thanks.
Larry
Larry