I am looking to upgrade my system again. I have a Rega dac between a MAC mini computer and an Art Audio Carissa Signature 845 tubed amp with a volume control incorporated into it. I also have a Denon DVD-A1UDCI universal audio/video player that I am not using as much as I use the computer music. Speakers are Dali Helicon 800's. The system sounds excellent now, but I am thinking that i might be able to improve it in the dac area. I had a Weiss Minerva awhile ago which did not give me what I hoped for with the Jadis equipment that I owned at that time. I wish I could try one out with my current system just to see if it really performs the way people said it does. I am open to suggestions on what seems to be working well in systems similar to mine.
I've never had the chance to listen to the Tranquility DAC, but I did audition the Ayre QB-9 and was VERY impressed. I would definitely check it out or some of the other wavelength Tube DACs that have the same asynchrous USB technology.