Got my Edition 9's balanced with Silver Dragon cable by Drew...Oh My God!!!!
Whether due to better cables or the balanced nature (or both) there is quite an improvement in the sound. Bass is phenomenal, while the whole sound is more coherant and smoother. I only have about 10 hours on the new cables so I hope that the sound will improve even further with break-in.
Comparitively, the balanced Edition 9's are better than the balanced HD650s; smoother sound, deeper bass, better depth of soundfield. However, less "air" around the instruments. The two together are
terrific complementary headphones, however.
If I have time, I am hoping to put out a full review of the Edition 9 vs DX1000 vs W5000 vs D5000 (Closed Headphone Comparo!). Early results have the Edition 9 as the front runner due to overall superior sound. The Denon D5000 is a close second with terrific bass, a neutral, uncolored midrange, and relatively smooth highs. The bass may be a touch too pronounced, however, leading to perception of a slightly recessed midrange. The JVC DX1000 is practically tied for second with no serious faults other than a mildly nasal-colored midrange, yet VERY smooth and easy on the ears. The AT W5000 has a terrific midrange and treble (gorgeous female vocals), yet the reticent bass and distant perspective are major drawbacks for me. The Denon's are the most comfortable, followed by the JVC's. The Edition 9's are a little snug while the AT's are too loose. More to come...