Also, I don't know anyone with a real Don Sachs phono stage, but it would be fun to listen and compare. I do know that the PH16 based unit I built responds very well to tube swapping, so perhaps you might want to roll in some NOS Mullards instead of some JJ or Gold Lions. I had some Amprex in the second spot for a bit, but they softened the sound a bit too much for my liking. Good at a little more smooth overall tonality, but they pulled away a little too much detail and harmonics for my liking.