I've been looking hard for a decent portable DAC to pair with my iPhone 5 (through the lightening port). I'm not interested in an amp at present as I've easy to drive IEMs. The PHA-1 really seems like the only viable, affordable option for me ($349 right now on Amazon). However, I dont like the bulk and the high 8 ohm output impedance is off-putting as I've the Westone 4R (16 ohm) to drive.
Given that I will only really use it as a portable system with my iPhone, I'm beginning to question my logic. Would it not be better for me just to buy Sony's new Walkman, the NWZ-F06, which has been getting great reviews? I would save cash (about $70 with an F06), the PHA-1 and F06 likely have very similar if not identical DACS, the F06 and iPhone would probably be less bulky in my pocket than the PHA-1/iPhone and I would have a much longer battery life from the F06 than the PHA-1, not to mention saving the battery on my iPhone! I'm strongly veering towards getting the F06 unless someone can tell me that the PHA-1 paired with the iPhone has considerably better SQ than the F06 (I use 16-40 ohm IEMs).
Many thanks for your time.