Ahhhhh.........Bo Ramsey.

That brings back the memories. You must be an old fart from the Iowa/IL/Wisc area.

The only thing about the Mono Extremes that I maybe wanted a little bit more of was transparency or "thereness".
This may get translated as "air" in your way of thinking.
Klaus voices these toward slightly warm it seems-some say tube like.
Of course they have SS bass control as good as you will ever find.
Anyway-I went for the SE upgrade with the new double thick blue boards. Should have them in about a week.
He states this "removes all bottlenecks in the sound" and "everything" is better.
Hard to believe as the Mono Extremes are in the ballpark of about as good as I have heard at any price already.