Join Date: Jun 2002
Location: Lubbock, TX, USA
The Zumo 550 has very good output if you are not using earplugs. Make sure you have the volume turned up. Push the button on the bottom left and then the + sign at the top left to increase the volume. Also check the master volume controls by pushing the menu button then the small wrench. From the next set of windows push the volume button which will allow you to seperately turn up the GPS instructions and the MP3 output.