Gotta wait 4-7 working days on that optical cable. Didn't know I needed a Toslink-to-Mini cable, so the one I received today was just a standard optical cable. Bummer. Larry from Larocco Audio said the IRiver w/ optical out with Micro DAC was the best listen,too. Debating on whether or not to get an H140 but then I'd have to re-rip CD's. My whole PC library is encoded in 352 Atrac Plus, which is the Sony Codec for you amateurs out there. Heh-heh, just kidding. I've heard you can rip a CD straight into the IRiver using the optical out? By the way RnB180, read your review on the Micro Stack, which is what really made me want one of these to begin with. I'm sure the HeadRoom crossfeed would add even more to the spaciousness of the sound. I actually tried a Xinfeed adapter (mini crossfeed plug) out from the amplifier and it actually decreased the soundstage. Weird, works okay just with an amp, guess it just wasn't meant with a DAC in the mix.