Are you getting a 60hz hum when the phono preamp is hooked into your receiver/computer?
This RCA to 3.5mm plug is what you will need for your computer hookup.
And here it is in action!
We also have a regular 'RCA' to 'RCA' patch cord to connect the output of the pre-amp to your stereo. If you don't have any additional 'RCA' type stereo patch cords sitting around you may wish to have us send one along with your new preamp. Just $2 will save you some lookin or a trip to the store.