I agree with Sdcampbell. Usually improvements are in the refinement area. I'm sure they will make an excellent speaker better but I would doubt they will fall in the major arena. I would say in the area of the difference between the 3A and the 3A Signature would be more like it. It was a definite upgrade and worth while as for transparency and high frequency purity. Even though it wasn't a leap, it was a nice jump with the model 5 tweeter. The 5 is such a good speaker as is, it will be interesting to hear the change. But who knows, it is a pricey upgrade. I hope someone VERY familiar with Vandersteen's will respond.
