Well I got to sit down and have a critical listening session with the new SP-6 speaker cables installed tonight. To be honest with you I had limited expectations of a significant sound quality difference with any speaker cables, however I was proven totally wrong. The difference was noticeable right off the bat with much deeper and cleaner bass response. The mids and high range were also clean and crisp but not the dramatic change observed in the low frequencies. Soundstage was about the same but, full disclosure, I did change the orientation of the speakers and moved them in about 1 foot together (I had a shorter lenght with the Morrow cables). My wife even noticed a difference! I’m very pleased with these Morrow cables so far.