Hello, I've been on here for a few months searching and searching for my perfect set up. As a student I am basically poor, so I'm unable to buy and try all the products that catch my interest, so I TRULY appreciate all the help you people give to me. I do try to do all the research I can but at some point it's more effective to ask for a specific comparison. My headphones are HD650. I'm using the KICAS amp but am not impressed. I've narrowed it down to the WA3 and the Valhalla. Both amps are really highly regarded, and I understand the basic pros and cons of each. Schiit is more affordable, has tubes that are designed to work best which will prevent me from sinking into tube-rolling (which I'm afraid I will enjoy too much but cannot afford), great warranty, AWESOME customer service. Woo has amazing build quality, sound quality, and alluring upgrade potential. Both seem to synergize with the 650s but the Woo comes up more often. Based purely on sound quality with the 650s (not build quality, looks, or performance with any other phones) which is "better", OR, if they are equally good but different, how are they different? How would you describe the sound of each in relation to each other. Also, I'm really tempted by the WA6 but it is really pushing my budget ... is it worth the extra $$$? I know there are threads about this but they all ended up off track and failed to answer the question.