I grew up listening to vinyl on headphones. When the spouse decided to evict my (very nice, but butt ugly) disco era stereo from the house, I went in search of something that could recreate the sound I grew up with and take some of the digital harshness out of my cds. I ended up with a Woo Audio WA3+, Senn HD650s with Zu cables. I spent more money on NOS tubes, than on the WA3+, itself. I absolutely love the sound. Trouble is, the sound is so nice that I find myself wanting to connect more and more sources to it. I had Jack modify it for a second input and switch for my PC/DAC. Now my old turntable and huge vinyl collection is calling to me. Building a music server looks like it might be fun, as well. I love the sound of my WA3+, according to Jack the WA2 has the same signature only more refined. Can anyone confirm this? I have a small fortune in TS 7236 and 5998 tubes, as well as 6922 variants.Using the same tube compliment is very appealing, I know what I like. I've owned many sets of headphones. To each their own; but my preference always comes back to Sennheiser. There may be a set of HD800s in my future, but impedance matching shouldn't be an issue Something I'm missing? I can afford the difference in price (sell the WA3). Starting over on tube rolling would be a budget stretch.