If I had to answer right now I'd say R8, but that's not fair on the RS6 as I haven't given it a fair shake, and I'm having some technical issues with it that need resolving before I do.Question - I don’t have a DAP yet. If you were in my shoes and had to choose between the RS6 or R8, which one would you choose? I assume it’d be the R8 since I’ll be mainly using the EVO with it.
I will say that I've never heard an IEM to sound so radically different between two sources (especially from the same brand). I don't think it's a matter of power output either because at the volumes I'm listening at, both these DAPs are pushing very similar power output (in fact RS6 is lower on the volume dial than R8, even though it has theoretically less power, and yes I know volume doesn't rwial power).
Irritatingly there are some things I prefer with the RS6 and EVO, and some things I don't, and it's all quite track dependent too, which suggests there's a FR emphasis going on that's clashing with something EVO is doing. Coloured IEM + coloured source can be tricky, which probably explains why the more 'neutral' (relatively) IE 900 isn't so different between sources (to this extent anyway), and also the more neutral R8 showing the benefit of a neutral source with a wider range of IEMs.
More to follow once I figure it out, but thought I'd put it out there that EVO seems to be quite source picky...