Klaus handed me the crossover while saying, "It takes two hands." It was big and heavy, but not being a techie, I have no idea of differences in crossovers, so it was kind of lost on me. Not in the market for new speakers, but was curious about the Loreleis. If I was looking for speakers, well, it'd be a no brainer. I do have a pair of Klaus's mono extremes. Got them about two years ago and have never looked back. He was running the speakers with regular monos, a gorgeous pair finished in silver, maybe platinum. He used what looked like a top of the line VPI turntable. Wish I had one like it - not to mention that Symphonic Line CD player. However, Klaus definitely prefers vinyl.