It's all about synergy im afraid. In this journey i have discovered no amount of reviews, impressions and measurements can compensate for actual auditioning. That being said not all gear is available to audition and therefore we reply on reviews and impressions to see what other people are hearing with the exact same gear. What needs to be taken into account is that we hear differently too. Im afraid its a hit and miss in this hobby at times. Coming to the balanced port on the zx300, I must say i am very much satisfied with it let alone on some tracks/ albums (i am guessing they are mixed in 5.1 channels) and sadly i seldom use the SE port. I have some after-market cables on the IT01 and they sound very good for their price point.