I took delivery of Grant Fidelity Tube DAC-09 on 5/21 and have been using it since, here are my thoughts after almost 2 weeks.
1) The unit really came into its own about 36 hours into my ownership of it, the sound just opened up, the soundstage widened and
the musicians and they're instruments felt like they were performing literally feet away. The sound for me in a 5.1 setup was all around me with excellent placement of each instrument as intended by the recording and mix placement.
2) I know what drums sound like, I sat behind a kit for years and base all my listening around what drums that are recorded sound like. If the drums and cymbals sound real the rest falls into place for me. I was struck by the realism of the cymbal sound, the unmistakeable metal inflection and the detail and clarity of the snare and toms. I thought about how one would describe such a sound and could only liken it too what a gleaming gold bar looks like in animation-golden, rounded, gleaming.
3) Wow-somebody please slap me, I can't believe I just wrote that, made me gag rereading it....LOL.
Bottomline for me is this was the perfect economical way to bring a tube sound to my 5.1 setup. I was sharing with someone that even MP3's sounded good and they do, they are now tolerable. I really found a wonderful sound quality using my PS3 slim as a transport via toslink to the DAC and into my receiver, its awesome!! My SB Duet with its linear power supply really sounds excellent playing wav files from my laptop and using the unit as a line level DAC has really given my setup new life.
All in all the best money I've spent toward my system and when I get bored or restless with the sound I can just swap out a tube and get a fresh start..gotta love it!