Cello Technology

http://www.cellotech.co.nz/

If you have a special requirement, have a talk with them.  They usually can source, or build what ever you need.

Unfortunately the choices are pretty limited in Dunedin. If I want something urgently I'll go to Cello or GLI but I've found a lot of the time they'll need to order stuff in anyway and they've almost always been more expensive than ordering online from a store elsewhere in the country. I've found the best option is to just order online from Computer Lounge or Ascent, both for parts or prebuilt systems.