I have the 2Ci, on their original "T" shaped metal stands. I drive them with other vintage, Harman Kardon 17s pre-amp and 16As amp. I am very pleased. I do classical and jazz. I can even do the Telarc LP of the 1812 with the cannons, and feel them, plus hear the small tinkles of a triangle in another part. I assume what you have is a successor to my speakers. The H-K amp is biased further in to class A than many - I don't know if that makes a difference. I run them through the original Monster cable - the big round one the diameter of a garden hose. However, I also have heavy duty jumpers at the banana jacks, so not bi-amped.
Vandersteen
After hearing many good things about Vandersteen speakers I purchased a pair of 3a signatures. They sound beautiful with chamber music or small group jazz but quickly fall to pieces with symphonic works or rock. Have other people noted this deficiency with Vandersteens?