Sean I ended up with the EVO 400 and from my understanding it is the same as the 300 only difference is XLR which I wanted. I can tell you it is a upgrade from the LS26. A dealer was telling me that people were trading ARC Ref series preamps for the EVO 400. I was wanting a LS28 or Ref 3 possibly but he said the LS28 while an upgrade over the LS26 was not THAT substantial. So far I am very satisfied with the EVO 400 as it does everything better and the 1st place I noticed was in the bass. If I had a complaint with the LS26, that it was a little weak in deeper bass. Of course that is my opinion. The LS26 is a very good preamp but the Primaluna is without a doubt better.