iPod Optimus Oz Adapter

Hi All
I was wondering if anyone out there (in Australia or who knows about this kind of thing) has an iPod Convoy, and if so what kind of adapter specifications should I look for if I want to power mine.
I did the stupid thing of asking the guy at the electronics store and blew the original adapter so now I need a new one not just a Aus/converter.
Lucky for me I didn't quite trust them enough to plug the speakers in right away and so the sizzling and popping was restricted to just the adapter.
I know nothing about electronics so any help would be greatly appreciated.
Thanks in advance.
I was wondering if anyone out there (in Australia or who knows about this kind of thing) has an iPod Convoy, and if so what kind of adapter specifications should I look for if I want to power mine.
I did the stupid thing of asking the guy at the electronics store and blew the original adapter so now I need a new one not just a Aus/converter.
Lucky for me I didn't quite trust them enough to plug the speakers in right away and so the sizzling and popping was restricted to just the adapter.
I know nothing about electronics so any help would be greatly appreciated.
Thanks in advance.