I have the ref 8b's running fully balanced from a Marantz SA-11S1 thru a passive-mode Adcom GFP-750. To me, the sound is absolutely fantastic with rock, big band, jazz, acoustic, etc. In general, the sound stage, imaging, bass and most of all the PRAT are better than with my PrimaLuna Prologue 2. However, I still enjoy the sound of my tube setup and I do like it somewhat more with most classical pieces. The main reason I bought the NuForce was to have a high quality, cool running system in the summer months. Tubes and Class A equipment take a siesta in my listening room from June through September. I am very pleased with the performance of these digital amps. Furthermore, having the two systems allows me to enjoy the best of both worlds during the course of the year. Its like drinking red or white - although they are quite different, they can be equally enjoyable when of good quality.
