contact Konrad at Cheyenne , he'll take care of you...
as for t tech....awesome quality, great price.
im one of the listed artists at cheyenne...i have an original and a spirit.
both line 11-12 volts and shade around 9...sometimes i find some of my Cheyenne cartridges wont do anything under 11 volts, as in the machine wont move the needles...
please keep in mind, you lose the warranty of your machine if you use TTECH, so i only use them on my original.
ive never used used PU2 power supply, i use a critical, because i use other rotaries as well.
btw i really dont notice much difference between the orginal or spirit.
But i Love em