I had the pleasure of listening to the Fosgate Signature headphone Amp with Fostex TH900 Headphones at JS Audio in Bethesda, MD. I was there to demo a Meridian Explorer DAC and the aesthetic of the Fosgate made me inquire about it and the sales guy was very excited to demo the setup.
He selected some very specific music (Pink Floyd - Money, Beck - Lost Cause, and another artist performing a binaural recording demo).
I think the Fosgate is a bit militant in appearance, but also warm at the same time. (reminds me of a wheatstone bridge they had on display at my radar school in the Navy). I'm going to return to listen to the setup with my own cans (Sennheiser HD380) as I'm sure the Fostex TH900's probably influenced the experience (at $1999 - I sure hope they would!!!).
I hate to use the clich'e that this experience has changed my life.. but, after hearing that setup I now definitively know that there is a difference in digital audio presentation and I am left wanting as I listen to my simple Mac Book Pro output :-( And NO - JS Audio will not take Kidneys in on trade - I asked.