Is that the AK100 (second revision), or AK100 (second version, which just came out this year)? If the first, it is not able to drive the GR10 well enough to render low bass. I've not tested the new version, but I assume it is better.
You're too kind: a vinyl or CD will never, ever put gaps through its songs as does the Shozy. But the Shozy will show up the amp in any portable CD player on the market. I wish it weren't tit for tat, but it is.
The problem both earphones have (the e-Q8 more so) is that not only does it swing way down the impedance pole, it is so sensitive to hiss that most quiet sources hiss like snakes. It's about as bad as the Ultrasone IQ, meaning that your amp/source is going to bug you probably.
1. latest gen iPod nano is very good
2. Calyx M very good
3. MZAK100 absolutely silent
4. AK240 reasonably good
My favourite of the above is the iPod nano simply because it is...