Very well said Brunk (as usual). CCS puts the crack in a higher league than the WA3 and its higher power higher resolution sibling, the WA2. Frankly, even minus the speedball, crack easily surpasses the woo otl's in detail and dynamics, to my ears.
The woos have a rich, warm, full sound, with a nice soundstage, but they sound a bit slow and perhaps the slightest bit blurry in comparison to more agile tube amps. If you want a stark contrast, listen to the same track back to back on a WA2, followed by a ZD
Edited by skeptic - 11/15/13 at 2:11pm