Jp1208, I heard the 9.02s. I'm not sure what you mean between single ended vs. bi-wiring? I listened to them using balanced interconnects connected directly to my front-end (APL Denon 3910). My speaker cables are shotguns (Acoustic Zen double-barrel). I'm still shocked at the performance of these amps. The hardest thing to get over is their small form factor, light weight, and price... quite frankly. It's hard to imagine such little amps, that cost $2,500/pair competing with an $18,000 Dartzeel amp. But that's exactly what they do. It's a real paradigm shift. They are definitely the real deal! If these amps are any indication of what the future holds for high-end audio, we are all in for some amazing sound (and bargains) as this techology matures.