Going to upgrade my M&M deck and was looking for some recommendations (keeping the Magni and Modi, just going to be at work). I was going to get the Woo Audio WA-7 mostly for aesthetics (it is a beautiful piece of gear) and for simplicity since it is an all in one, and a little bit because I wanted to give tubes a try. Ditched that idea when I saw that the only input was USB and I really want to use S/PDIF (I'd like to free up a USB port on my Mac).
I've already decided on the Bifrost DAC but which amp should I get? Asgard2 seems to be the no brainer if I want an all around solid state champ, but I'm still intrigued by the idea of tubes. I mostly listen to classic rock, jazz, and classical (minimum 320kbps AAC though I am rapidly expanding my lossless and HD library), and my main headphones are my HD650s (though that may change as well). It is not an issue of cost. Hell, I can get any of these options together for less than what I would have paid for the WA7 (yay, more money left over for headphones).
I'm sure many of you have had this same dilemma and thought I would ask for some advice. I have read a ton of reviews here and at other sources and a few comparisons but most of the comparisons have been between the tubes or the solid states (perhaps I missed a thread but it wasn't for lack of trying). Are tubes too 'warm' for the HD650s? Would it be a better match to have a brighter amp or should I go for the tubes and find a better headphone to match it? Too many options and it is driving me nuts! I really don't think I need the power of the Lyr (though it is probably the most versatile of the three) so it would really probably be just between the Asgard2 and Valhalla.
Appreciate any advice.