I recently switched from a DNA 0.5 to 0.5 Rev B. Amazing step up in terms of soundstaging, bass extension, and high end detail. However, even with my Vandersteen 2cis and BAT VK3i, it seems ever so slightly bright now. Using Silver Sonic t-14 shotgun biwire. Haven't heard the others. Just thought you might want to consider the Rev. b.
