The only reasons not to run direct are if you have other sources and don't want the hassle of switching interconnects, OR you have a source with a wimpy output stage that doesn't work well directly into your amp. For a high-quality cd-only system, direct is the way to go. The adage that the best interconnect is no interconnect is true, and it goes for preamps too. Think about it, how can another component possibly improve on the signal? It can't, it can only degrade it. I have, however, read posts by some tube-o-philes who just had to have the euphonic color of a tube preamp in the chain. So if that's what floats your boat, go for it.
I don't have much love for passive attenuators because every one I've ever tried or heard has sucked the dynamics right out of the music. I know this was probably due to less-than-stellar output sections on the source end, but it's been my experience nonetheless.
I don't have much love for passive attenuators because every one I've ever tried or heard has sucked the dynamics right out of the music. I know this was probably due to less-than-stellar output sections on the source end, but it's been my experience nonetheless.