The Crack with Speedball is in a different class than without. It makes a huge difference. I haven't heard a WA2 yet, but the Crack w Speedball slightly outclasses my WA6. Personally I have a long term itch for a WA22 or WA5.

Entry level portable amp - I have a Fiio E12 and it works great with my DT990 250ohm.

  Very nice work, really classy. cheers!

Thanks everyone, T1s next it is.   Absolutely love the WA6 so far (had it less than a week) - eventually I will be stepping up the woo line though and leave the WA6 at the office desk.   joseph69, is that a funked-up WA6 in your avatar? Yours ?

Thank you!

Hi everyone,   First time poster here. I'm hoping someone can provide a little advice on which component to upgrade next.   My setup is pretty modest: Fiio X5 -> Woo WA6 -> Beyerdynamic DT990 pro (250 ohm)   Now, what would provide the best improvement: a new DAC, or better headphones?  ...