Audio Research SP9 MKII

what was the favorite and what was it about the 9 MKII that did not hit the mark?

I've heard the SP-9 a number of times in a friends system. I owned the SP-14 for many years. If you can afford it, go with the SP-14. Its a much better sounding unit. I'll bet you can pick one up at a very reasonable price these days. I sold mine for $1000. years ago when I bought my new REF-3.  

Thanks, will look and see what is out there.

Having owned both the SP-9 mkII & SP-14, I have to agree with oregonpapa.  Both were good performers, when equipped with the Siemens, early 60's, grey shield, CCa, but- the 14 did have better presentation than the 9.     I handed my 14 down to my son.   Whichever you settle on, install an IEC C14 connector(ie: http://www.partsconnexion.com/ac_furutech_plug_inlet.html) and upgrade the PC.  It's an easy project, given the aluminum chassis, and well worth the effort.

Thanks all!