Help with Building Amplifier

Thanks for providing a link to the data sheet!

The noise is likely coming from your power supply, and is there is a lot of ripple you may approach the 15V limit. You dont say what you are using for the PSU.

IS the "noise" mains hum, (a low hum or buzz) ?

what "device"?

I think we need a schematic - a sketch or photo will be a start.