The WA2 is a five-star amp. The amp itself is a marvel of engineering, built on a Bauhausian aesthetic: form follows function. It's pretty to look at, but, properly upgraded, infinitely prettier to listen to. With dual driver, rectifier, and power tubes, it's possible to sculpt and finesse sound signatures: several reviewers have already noted that the amp lends itself to tube rolling--which can be both an exquisite blessing and an expensive curse. For sheer versatility, the WA2 is a wonder. Add to that the WA2's magical sound, when properly upgraded...