Apogee, there's a guy on Ebay selling this Krell KRS 1A preamp.
You should ask him.
http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313&_nkw=Krell+KRS+1A+Preamp&_sacat=0
You should ask him.
http://www.ebay.com/sch/i.html?_from=R40&_trksid=p2050601.m570.l1313&_nkw=Krell+KRS+1A+Preamp&_sacat=0