Best dac from computer to tube amp ???? Weiss?


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.
128x128mattzack2
Hate to write this but the Tranquility Dac made me sell my Amarra dac it was so good.
Mattzack,

You will be pleased to know that I have a Tranquility on its way to me.
Pro review on the Lamp Dac
http://www.stereomojo.com/Stereomojo%20Six%20DAC%20Shootout.htm/StereomojoSixDACShootout.htm
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.