Dept of Philosophy: It occurs to me, having bought the Euforia, that since this amp has so much potential for even more increased performance, it demands higher grade ancillary equipment. The Elise, on the other hand, prodded you to look for upgraded tubes for better performance, but did not ignite the upgradeitis to the same degree. In other words, whereas the Elise sort of encouraged you to look for upgraded performance via different tubes, the Euforia pushes you into buying higher grade associated equipment. So my question is: Which is the most cost effective way to do this? An Asus sound card? Is an external DAC a necessity with a sound card? Mimby?