What is the Make and Model of the amplifier?
You need to use the Red and White RCA plugs on the "break away" cable that comes with the Speck 1 to Input to an amplifier and send audio out to the amp.
Let me know what you've tried so far and if you get stuck. One caveat though is that you need a TV or monitor to connect the Speck 1 to in order to see the MENU's on the device- it's not a simple audio player, it's a media player- meaning it's intended to be connected to a monitor or TV using HDMI or the yellow video cable in order to see the setup MENU's.
If you need further assistance let me know. Please do not forget to click a POSITIVE RATING before you go- as it's how I am credited for my work. You can follow up at any time, at no additional cost.