Power Supply For Frostwave Fat Controller

I need a bit of help with finding a new power supply. Specifically the current rating.

The manual unfortunately omits these items and only says 16voltAC is required.

Thanks in advance.

Here is a link to the product recommended by Paul Perry, should anyone else need one. He also suggested buying two as he thinks these are getting harder to come by.

http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_100108_-1