Darkmoebius,
If there`s one thing thats been demostrated often in high end audio, higher cost does`nt mean better sound.
With the very efficient Zu speakers the additional power is`nt an advantage, it`s sound quality. Often times a lower power amp will have superior sound to a larger and more complex design.
I would think most audiophiles at one time or another have heard quite expensive systems/components that sound like crap.
When I got my 300b SET amp it was less expensive than the 100 watt/60watt triode push-pull I was using, yet the "8 watt" amp sounds better.
Best Regards,