bertawicks

hey everyone, I'm kind of new to the minidisc community and hobby. I've used my minidisc player, a sony mz-rh10 several times using one mic and it sounds pretty good. Anyways I bought another mic and a splitter from radio shack and when i use the splitter and two mics the sound only registers in one side. I called the Sony guy and he told me that I can only use one mic for that one but there are minidisc recorders that have two mic inputs...does anyone know where I can find one of those. Your help would be GREATLY apppreciated...