I recently bought a Whest DAP.10 for use with my Benchmark DAC1 and Audiomoded CEC TL-1x transport. Transparency, focus, and depth and width of soundstage improved quite dramatically. An expensive "tweak", but nothing else I know of has this particular effect, especially with a state-of-the-art DAC. I know it's not coming out of my system for the forseeable future.
