I have finish my (too) long review of the A8000, it can found on headfi or
HERE
Simply put, they are the best all-arounder hyper-realist sounding IEM I ever try, the bass articulation and extension is mind-blowing, tonal balance is perfect, imaging is both great in spatiality and (transparent) layering, transient response is so fast even the busiest tracks never get congested and got good space between every instruments. I discover they improve even more with a good quality Litz 6n OCC copper cable (extra timbre thickness and nuance). Ear tips as well as audio source (amping) do inflict on their behavior too.
The A8000 are sure expensive, but at least, they make 99.99% of music sound excellent, unlike less neutral TOTL iem. As well, they response to EQ impressively well, I can transform it into Basshead iem if I want.