manicm:In fact I would not recommend the Chordette Gem, recent UK mag review (HiFi Choice I think) stated its Bluetooth as dodgy and the USB as good.
I suspect the DACMagic, Firestone Audio Fubar II USB DAC and others would trounce it in USB mode, at less than half the price.
The Gem is a very niche product. I suspect in future Chord would release a similarly priced device without Bluetooth but with normal digital inputs. Must admit though, the Gem looks like a gem!
The Hifi+ reviewer had problems because (as he stated in the review) he was using Mac OSX 10.4 and Windows XP both of which do not natively support the A2DP format....
http://en.wikipedia.org/wiki/A2DP#Advanced_Audio_Distribution_Profile_.28A2DP.29
What Hifi? did not seem to have the same problem....
http://whathifi.com/Review/Chord-Electronics-Chordette-Gem/
Also the USB codec on the Chordette supports 24 bit/96khz (I have called Chord and checked this with their technical guy) so 24/96 downloads such as Linn records SACD quality etc. will not be downsampled like they would be if using the Fubar II USB DAC or USB input on the DacMagic (both 16bit/48khz on USB).
Despite owning the Fubar II DAC myself, I would expect the Chordette Gem to be a definite upgrade with full capability from a suitably equipped laptop/Mac running Leopard or Vista or an iPhone/iPod with Bluetooth A2DP 'dongle' attached.
Chord cannot help it if the Hifi+ reviewer does not keep himself informed.
This youtube instructional video shows how easy it is with the QBD76 and/or the Chordette (both work the same on bluetooth)...
http://uk.youtube.com/watch?v=ALhO3_3Xg4I
But it is advisable to have Vista/OSX 10.5.xx with full native A2DP support.