The 950 also only has the 2 prong without the ground prong. I connected a MIT Z-Cord2 cable without any problem.
The MIT Z-Cord2 does have 3 prongs that plug into the power and 3 holes on the other side that plug into the audio device.
Sicnce the 950 only has 2, the 3rd hole isn't used.

I've had no problems using it at all.