Ok, here's the gist, I've pretty much nailed it down to two dacs. The W4S dac 1, or the Burson 160d. I also have order the cullen modded sonos ZP90 to get plugged into. What I am looking for is for some of you to expand on the sound qualities of either if you heard either one or own one. What I have gathered so far is that the Burson is warmer, more musical. I guess I'm afraid if I go with the w4s, the sound will be too digital, sterile to some degree. I'm aware of the different attributes of each, so stick with SQ,and associate gear. I may just stick it out a tad bit longer because Burson is suppose to come out with a stand alone dac, but the 160d is also a class A pre amp but lacks alot of inputs you'd get with the W4S. I know, a toss up, but I haven't had an ear on either one and will be buying blind so any comments will go along way from those who have their ears on these 2 units. Thanks in advance for any help.