Has anyone heard the Audioquest Dragonfly?

Interesting device, and unfortunate that they would use a picture of a damselfly rather than a dragonfly as the logo in their literature.

09-30-12: Zeal
Can you use the Dragonfly just to stream internet radio? Does i-tunes have free streaming? How about playing CD's on your computer to your Stereo?

Whatever you can use your computer for for music, you can use it with a Dragonfly.

I don't know the procedure for a Windows machine, but on a Mac the only difference is that you plug the Dragonfly into a USB port, then open system preferences to Audio and select Dragonfly as the preferred output device. If you don't want system warnings and email notifications to come through your stereo, designate all other system sounds to go to the internal speakers.

Then plug your stereo into the analog output of the Dragonfly instead of the computer's analog headphone output. Whatever you can play on your computer will come through your stereo, whether it's iTunes, streaming radio, or a high-def player playing WAV or FLAC files. The difference is that the computer's digital audio datastream will be decoded by the Dragonfly's asynchronous USB DAC rather than the computer's internal one.

09-30-12: Philjolet
I find it interesting that you are not especially interested in keeping the
Dragonfly, I thought you liked it pretty well in your thread.

I do like it, at least in principle. It's a clever, well-packaged,
robust, well-thought-out design. After encountering multi-thousand-dollar
asynchronous USB DACs, I thought it would be interesting to hear/own one I
could afford, designed by Gordon Rankin, no less. I think the Dragonfly does
what it's intended to do: it creates multiple sample rates that provide cleaner
upsamples of all the typical sampling rates, it adds a little analog preamp, and it
provides a better signal path for high-def digital files. Playing the 24/96 sampler
from HDTracks through the Dragonfly was a significant improvement over
computer sound in my house.

However, I am less interested in higher highs, lower lows, louder louds and
softer softs than I am in my emotional response to music. Of course better
fidelity and high resolution helps, but there's something about even excellent
digital playback that doesn't grab me. My emotional response to my turntable rig
is significantly stronger than to any digital sources I listen to, and also closer to
the emotional responses I feel to live music. Therefore, instead of chasing my tail
going after the next round of digital, I'd rather put the money into a better
cartridge. I already have around 1500 LPs and 500 CDs, so at age 59 I'm not
about to start a collection of 24/96 downloads at $18 ea. when--as good as they
sound--they only take me about 80% of the way to where analog takes me.

I think the fact that you need a miniplug to RCA adapter is a pretty big downside
to the Dragonfly though I have not heard one.

Nah, not a factor. There are plenty of very high quality stereo mini-to-RCA
interconnects. I have a couple of them and tried them both--a 1.5M Zu Cable
Mission and a 3M AudioQuest level 5 with PSC+, which is AQ-speak for PCOCC
at six nines copper. Both are great interconnects and I swapped them back and
forth for a sanity check but I found their performance to be close to identical.

If you like the idea of the Dragonfly, don't be put off by the mini-to-RCA
interconnect. There are plenty of good ones out there from Cardas, AQ, Kimber,
Zu, and others.

I got one for my wife to upgrade her computer audio. It is a very large upgrade compared to straight mini-RCA. That's with Itunes in Apple lossless. I'D imagine a further upgrade with Pure Music or similar product. We also use it with ear phones and again it's a substantial upgrade from just the mini-microphone port out. Obviously it's small and portable meaning you can travel with it. My wife, who loves music and tolerates the Hifi stuff, loves it.

For the money it offers a lot. You would probably have to spend around a 1000 dollars for better sonics. Other devices do have more connection options.
FWIW, my system is Atma-sphere MP3 to Atmashere S30 to Zu Soul Superfly.
Out of curiousity, we compared it to my analog set up, (Technics SP10 in a OMA slate plinth with a Graham phantom and Koetsu Jade) lisening to identical Billy Holliday songs. Was it close? Ahhhh, no. Nor should it be at the huge price difference. But the fact that the dragonfly sound was good enough to make me wonder speaks volumes.

Sfar, good one.