2012/1/22 Jeff Mai <j...@iinet.net.au>: > The Alix 2d2 schematic shows a 5V linear regulator directly after the DC > input jack. If you feed the Alix with a 15V external supply, this regulator > probably dissipates as much as 2-3 Watts as heat > > There is a separate supply for the USB power that looks like a DC - DC > converter. It will be more efficient, but noisier. > > I found I could run my board with as little as 9V input, but it depended on > the USB equipment attached. My HagUSB converter worked fine, but the > Audiophilleo 1 did not. > > Your Ayre DAC is certainly not going to use USB power from the Alix. I > think you could get away with 9V - maybe less.
The Ayre QB-9 does require USB power. I believe it powers the Asynch USB input board. The rest of the DAC is opto-isolated from this board and has a dedicated supply. _______________________________________________ Voyage-linux mailing list Voyage-linux@list.voyage.hk http://list.voyage.hk/mailman/listinfo/voyage-linux
