i have 2 GB and it is working very nicely from past 2 years with a high level output. I also bought audio system for my car as i love music. well car audio playes a great role to make every journey very musical and delightful. car audio installation is also not that difficult as it looks.. you just need to follow step by step instructions, color photos, wiring detail, as well as what tools ans parts you will need to do a professional installation.. so there is one source from where i buyed stereo for my car and other car accessories i.e. car audio install, take a look and ENjoy!!! Thanks, Have a good day!!