Soix, Your response is a perceptive observation regarding my apparent preference of speakers. I truly do enjoy both sets and the VS’s may be a bit more technically accurate but for some reason that I can’t quite put my finger on, the ML’s keep pulling me back in. Also, the Ml’s are easier to look at as furniture as my listening room is also our living room. The bottom line is that I’m really not sure what I’m looking for as Sonic improvement with a different preamp. Although I consider the sound of either system the way it now exists, to me at least, to be extremely good, the Angstrom is quite old with no upgrades and is not a dedicated two channel preamp, which leads me to assume that improvement is possible. Detail and resolution are extremely important to me.