kapitan here... using my sis account to reply...

After getting my Go-Vibe and new Nano(from RMA), I tried coupling it with M2 and KSC75. It sounds nice with M2 for most of the songs I have. As for KSC75, amping it with Go-Vibe make it so bass-less. So weird. Although after amping it, the highs arent as shrill as b4 and also add a bit of soundstage.