Thx for your response - just thinking out loud on this one... Do you feel that a balanced 5pin combined with the Pro-ject balanced phono Pre amp would be an improvement (from current RCA)? I have no complaints on the current system, but always looking for that little bit extra. Running all Mac gear, C53 pre - MC601 monoblocks & do have a Pro-ject phono box RS2 preamp as well.