Yes I can but that will make the entire concept of taking A4 for the road obsolete.
Fostex HP-A4 - Page 4
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Didn't realise you meant mobile (battery powered?). I'm sure you can get a battery pack with usb power output that'd do the job, theres a bunch available for mobile phone charging, some with lots of juice. Though that still doesnt seem very portable to me, laptop usb buspowered would still be easiest and would the sq really be that different? What's the theory that more overhead/current is more stable and doesnt have any interruptions from the laptop processor?
with internal power it will open up the A4 to be more than just a USB dac/amp. I guess clean power requires internal to be designed differnetly and hence the final product no doubt will be larger and cost more. All and all clean power can make a difference and will provide more power.
I would do the same. This is a good way to mitigate potential USB audio+power noise issues.
I might be purchasing this amp next week, most probably from pricejapan. I'll keep you guys updated if I decide to buy it.
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Decided to complete my Fostex-collection and pre-ordered the A4 yesterday. Should arrive mid-february...
Glad I didn't buy the A3, this new incarnation design seems much nicer, I like the mini-A8 look. And it's the missing link to connect my TH600 to my MBP at my office.
Interesting choice with the DAC though as I like the sound of the AKM chip in the A8, it fits the TH900 that I use at home quite well.