PSU's for an Acoustic Revive RR-888 (or RR-777or RR-77)?

Thanks Ozzy.  Did you notice a significant improvement after adding this PSU?  Also, it appears from looking at the rear of the unit, that there are speaker binding posts rather then the normal 12V female receptacle?  Am I missing something here?  

I have been researching Linear PSUs for my DAC and can offer you some suggestions. First, check the specs of your unit; it's 12V, but you need to know it's amperage. You can use a power supply with slightly higher amps, because the RR-888 will only draw the amount it needs.
  Also, it's important that the unit has a high-quality transformer, and a regulator which can filter noise from returning back down the line to the mains.

The PSU's made in the US and UK are highly regarded.
As for buying from China, I have only found one brand that has been receiving high praise; Teradak, and reasonably priced.
http://www.teradak.com/products/?id=25
Their dealers sell on ebay. Again, you need to match the specs of your unit with the specific power supply.
http://www.ebay.com/itm/131112824783?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

Teddy Pardo is a top rated PSU, but you pay for that quality.
http://www.teddypardo.com/powersupplies.html

I've heard great things about the Teddy Pardo PSUs, but I've also had very good luck with the KingRex supplies as well. Unfortunately, the price has risen with the MKII upgrade--which I don't think is significant enough, sonically, over the MKI on the AR devices to justify the upgrade, but that's just me.

Whatever PSU you choose, try experimenting with power cords on the supply. You might be surprised.

As a lower-cost (but still very effective) alternative, possibly contact Jennifer Crock at Jena Labs. She does a fairly inexpensive filtration tweak to the stock wall wart that, in my experience, is as effective as many linear supplies I've tried. I use that on my second Schumann device.