Netbook to USB DAC to Headphone Amp on Batteries



Are there any good DACs that I can use with a laptop or netbook, which are either USB powered, battery powered, or rechargeable for at least a few hours?

I am very happy with my Lenovo netbook for traveling, and have a spare 6 cell battery which means I can work and/or listen to music for most of the flight to London.

My Grado headphone amp travels easily and runs for hours on 9 volt batteries.

So all I need now is a good DAC?

Would the HRT Streamer or Musical Fidelity VDAC work this way?

Thanks for any ideas.
cwlondon
Cw- I have the Music Streamer+ which is very nice sounding and costs about the same as the VDAC. I have not used it w headphones; I am using it to feed the digital stream from my music server to the NHT M00/S20 speakers I have in my office. I have not done any comparisons at all w the office rig, but I do believe it sounds very nice, in total.
Pugstub,

Before completing my research, I impulsively ordered a Nuforce UDAC.

It arrived quickly, and I was also impressed with the finish, build quality and cool LED light. Very small and USB powered, so also perfect for traveling.

On this morning's commute, I tried it out with my Lenovo netbook, iTunes and a pair of in ear Shure headphones.

This reminded me why I got into this hobby about 30 years ago:

Despite the bashing that we audiophiles sometimes receive for being preoccupied with equipment and tinkering, it felt like the first time in a few thousand miles of recent commuting and business travel that I forgot about the equipment and really enjoyed listening to music.

This may not be the state of the art solution for portable USB audio, but it was very enjoyable and thanks for the tip.

Of course, no self respecting audiophile would stop with any solution simply because they were satisfied and happy, so please do continue with any suggestions for the ultimate quality in portable devices.

When I have the chance, I will try using the Nuforce device simply as a DAC, with RCA out to my Head Room or Grado head phone amp.

cwlondon
I too have purchased a Nu-force UDAC. Paired with my Sennheiser HD 555's, I find this setup to be very satisfying. One bump in the road to mention, which I have not addressed with Nu-force (& may decide not to): My UDAC doesn't like to be powered up continuously. Left turned on, after several days a whistle developed in the left channel, that disappeared after the unit was powered off for an hour or so. This problem has been repeatable, as I have forgotten to turn the unit off after several satisfying listening sessions of multiple hours each. The unit was also warm to the touch after several days of being powered up. The whistling has occurred when the UDAC unit has been driven, or idling. Once cooled down and off for awhile, the unit comes back sounding as good as new. Guess the power switch is on there for a reason.......but Nu-force does not provide any warning about it being powered up continuously. The sound is so impressive on this little unit, it makes me want to audition their amplifiers....
The RWA Isabellina HPA is a usb dac with headphone output and it runs on batteries. Right now Im using a laptop run off its batteries into a offramp run on a bpt power supply then into my battery powered Isabellina HPA. Im completly off the grid and it sounds great. Its a very good battery powered usb dac.
The RWA Isabellina HPA is a usb dac with headphone output and it runs on batteries. Right now Im using a laptop run off its batteries into a offramp run on a bpt power supply then into my battery powered Isabellina HPA. Im completly off the grid and it sounds great. Its a very good battery powered usb dac.

I had the great pleasure of hearing Kingstyles1's headphone rig, he's describing here, just recently and can say that this combination sounded remarkably good. Not a trace of typical digital screaming meanies or graininess or stridency, which on headphones will encourage liberal use of Advil. I was mightily impressed at this thoughtful combination of components. It did not speak of digital in any way at all to me. If it weren't for the complete absence of pops and clicks I might of thought I was listening to an LP.