Audio Buffer

Dear All,

I'm thinking of matching the ARC Ref 3 preamp with Mac MC501's. However, there may be impedance mismatch issues or will there? ARC Ref 3 impedance can go upto 1430 ohms while Mac input is at 18k-20k ohms?

Hence, I also plan to put in an audio buffer in between the pre and power e.g. Burson Audio Buffer AB160XLR

Has anyone experienced/ used audio buffer between pre and amp?

Thanks
primare_cd31