Ditto that Fsarc. I've now had my dart pre for 3 months and it has worked flawlessly. I have also gotten 17-18 hours straight from it without the battery needing recharging. This thing is all music...by that I mean always before with my amp and pre-amp I found myself being drawn to various artifacts in the sound that I knew were coming from the equipment. Now, I just listen to the music because if there still are any artifacts I can't hear them.
My upgrading of amps and pre-amps has come to an end. Also, just recently I had my Linn CD12 upgraded by David Schulte of The Upgrade Company and it has been transformed into what has to be the SOTA in CD redbook once again.