Here is a Korby PSU for AKG C-12 and C-12VR and other 12-Volt tube mics:

http://search.ebay.com/_W0QQsassZcathedralguitar

or if already sold, it is always viewable on my website:

http://www.m221b.com/Korby/Korby.html

Free Shipping for 3dB Members!!!
Stephen