Hi, facten.
The CIAudio Wadia Dock power supply was purchased through "Music-Direct" some time ago, it was not cheap, around $250??. But it's a hefty unit and comes with the cable that plugs into the Wadia. It is a linear PS, not digital, so no squeaking and provides both hefty current delivery and voltage regulation, my ears tell me it was worth the extra $$. You do need to provide your own power cord for it, where I am using a budget Nordost cord.
