Also, you can see my review of the newer iDSD Black here -
http://www.audiocircle.com/index.php?topic=148097.0 I prefered the sound of the original Silver iDSD so I kept it and passed the Black along to the next person on the tour. The Silver is a crazy high oerformer. I ran it in my system for years with $20,000 speakers as my main DAC. Especially if combined with a Regen, the iDSD Silver plays with the big boys.