[macrojack]

Legendary and rare step up transformer for low output moving coils. I'm asking $1200 but will consider respectful offers. I've used it with a Denon DL 103 and a ZYX R-1000 Airy. Highly recommended.

[NealH]

A little steep in price in my opinion and, frankly I don't  need one now but, in my opinion the Mk 2 Cotter is the pinnacle of moving coil step-up devices - amplified or passive.  Nothing I have ever heard compared to it.  One of the biggest mistakes I ever made was selling mine.   I don't need it now, but I still miss it. 

[TomS]

I had the whole MK system including NFB many years ago.  Of all the pieces I've owned I wish I still had it.  Tom