Yes, I'd like to add my thanks for the distro and site. I was thinking along similar lines to Marino about a linear power supply. I too am very curious as to the difference it might make. Last year I dived in to Linux with the Voyage MPD/Alix distro/SBC and learnt a lot while having great fun! After I got it running I wondered how it would sound with a battery as a power supply and I cobbled together some parts I had lying around. There is a description over on Computer Audiophile if anyone is interested but essentially it's based on three items readily available from burglar alarm supply stores or dealers. I used a Honeywell transformer to power a power supply/charger board which maintains a charge on a 7Ah 12V gel cell battery while outputting filtered and regulated 12VDC. When AC power is removed from the charger board it instantaneously switches to the battery.

I use it to power the Alix 2D2 and to my ears there is a small improvement when running with the AC disconnected. Even with the AC connected its a linear power supply. So, I was thinking of using a regulator like Marino mentioned above, to get the 12VDC output of my power supply down to 5V and using that on the Raspi. Right now I get more than 8 hours continuous play out of the Alix running on battery only so I'm sure the Raspi would get more!! Was even contemplating using the battery to drive both the Trends amp and the Raspi – that way, with the Muse DAC powered by the Raspi's USB bus I'd have a completely off-the-grid system.

Has anyone tried this powersupply/USB-hub yet? https://www.modmypi.com/New-Link-4-Port-USB-Hub-(USB-2.0-with-Mains-Adaptor)
It's a powered USB-hub with an extra usb-port to power the Raspberry Pi and it is especially designed for the Pi. It's the same price as a knock-off 5V 1A usb-adapter. I've already read that cheap adapters can damage the Pi and/or the SD-card. What do you think about this one, since it is cheap but designed to work with the Pi..?

Why not use a mobile wifi harddrive? I haven't tried it myself but sounds like it would not just for NAS access to the files but also a hotspot for mpdroid access to control. All still keeping 100% portable since the wifi hd has a battery pack.

http://www.pcworld.com/article…..-plus.html

After a bit of reading up on the 2 I think the Seagate Wireless Plus is the better solution it seems to have NFS support out of the box where as the Corsair Voyager Air is Samba. Correct me if I am wrong and you are using the Corsair Voyager Air with NFS