Battery powered USB DAC

[krisno]

Hi guys

Does anyone know of any battery powerd USB DAC's out there? By that I mean a USB DAC with a built in battery which recharges from USB and power the DAC. DAC powered by battery is the best, no interference etc. Perfect for low current electronics.

I know that all Wavelength DAC's are both USB and battery powered, but they are so expensive, and 'large'. The PICO is a battery powered DAC, but the DAC is run on USB power, not battery(the amp part is).

Any other ideas? The next thing from PS Audio will be interesting. It will be a new product, with better DAC than todays PS Audio Link III, but also with a built in headphone amp which will be better than todays GCHA 100 or what its called(headphone amp).

K

BTW: if anyone knows, what tubes are good for x-can v8 to remove the harshness...

 

[Mr.Sneis]

I did just by a ibasso d2 boa that charges via usb www.ibasso.com

edit * nvm

 

[Dash]

The upcoming D3 from iBasso may fit the bill.

 

[royewest]

I'm listening to an Alien DAC right now. It is powered directly by the USB. Folks who have listened to the externally powered version aver there's not much audible difference between exernal and USB power in this design. Sounds mighty sweet for $50!

 

[PhaedrusX]

most USB DACs will draw power from two separate sources: one for the DAC section, and one for the output stage. since the conversion stage is far less demanding, most designers don't have an issue pulling 5V from the USB for it. you probably shouldn't worry too much about it, either.

a better power source for the output stage is far more important, but because it is generally more demanding, adequate battery supplies can start getting big (Altman, Ack Dack, Redwine Monica).

if you really want to bypass the USB, you can always try DIY. the Monica USB DAC i have allows one to disable bus-powering. you can hook up household batteries to the DAC, connect a car battery to the gain stage, and be completely off the grid.

but unless there is something seriously array with your USB port, how much of an audible difference all this will make is probably going to be pretty small, imho.