Well after years of on again, off again research into my next stereo upgrade, I finally shelled out and bought a digital preamp, the Benchmark DAC1 PRE USB.
I had a few problems with my entertainment system that this box solves.
First, my Red Wine Audio modified Squeezebox couldn't drive my power amp through a passive attenuator properly so it lost a lot of bass and dynamics. Found this out by A/B ing with my CD player through a mixer.
Second, all my sources were digital but most have their own cheap crappy DACs. These include my Media PC, the Samsung TV and the Xbox...