Most, if not all receivers would not have the output for low output MC. I use all separates and don't even have a phono output in my preamp and have to use the AUX. Makes no difference, you either need a step up or separate phono preamp which will allow you to use low output MC. Step up should be your cheapest option and I believe that you should still use your phono output of your receiver although it probably would not matter which circuit you chose.