Elektron Musical Instruments

Hi folks,
I have just purchased a used Sidstation which is currently on its way 
to me.

The former owner made the comment that he bought a new Radioshack 
adapter for it because the Elektron adapters were not good quality and 
caused crackling. Is this true? Or is he just making an excuse for the 
non-original adapter?

Does Elektron sell the Sidstation adapters separately? I couldn't find 
them on the web site.

Thanks!
-V