The Shiva is made by
www.adireaudio.com. You can get them directly from the mfg. They should also have a list of resellers on the site that might save you some shipping. You'll find all the info you need at that site. If you have any specific questions, feel free to ask here also. There are a few of us who own them and will be able to answer just about anything.
BTW, also check out the dayton DVC12 from
www.partsexpress.com . It is a shiva clone and depending on where you live might be easier to get a hold of.