Hi Ali,

Actually, I WILL be using a valve preamp with mine... soon. However, instead of adding a valve preamp into the system, I plan on "transforming" my Buffalo DAC into one (I need to stop stealing Leo's ideas)! I may replace the Sowters in Nick's schematic with Lundahl LL1689s though, as I really like the results of my current LL1527 "passive output stage" setup.

Cheers,