Starting to clear some stuff...
I have a pair of Beyerdynamic TR/BV 351 015 006 input transformers.
I've been using these for MC step up and they sound great. Some folks in the group have heard these and they compared very favorably to, if not better than, everything else we compared them to.
$75 shipped to anywhere in the US. PayPal is fine.
You can email me at firstname.lastname@example.org
Or text at 443-280-8963
There will be more stuff to come.