I prefer LAN for most uses, but the U18 is quite good too - especially after upgrading the fuse and adding the OCK-1. I use the U18 for all non-music applications on Win10, ie: YouTube, watching movies, gaming, etc. As others have said, experimenting to find what you prefer is half the fun! Cheers!
@duffer5 I have the U18 too, which as Cobrabucket says, responds really nicely to an external clock like the LHY OCK-1. (I've not yet tried fuse upgrades, which are somewhere on the possible upgrade list for the new year). A better USB cable (Semperfi The Outsider) brought my Zen Stream/U18/R26 closer to the R26 internal streamer, but suspect it'd take an expensive I2S cable and/or streamer upgrade to achieve parity with or better the R26 streamer. Instead, for now I'm prioritizing investing in the upstream network path which has already paid great dividends (see my post on the SW-8 switch). FMCs a fast follower in the New Year.
Unlike Cobrabucket I don't currently use my computer as a source of other media content, everything else goes via my TV which I take audio out via optical out to an Ifi Spdif purifier 2 reclocker (w/ Ifi Power X) to the R26 coax spdif in. Netflix shows sounded better via the TV/Ifi chain than from my Mac Mini>usb>U18>I2S>R26. I suspect that may be as much anything an indictment of the quality of the Mini's USB out and a positive endorsement of how good the Ifi v2 spdif reclocker is, than any criticism of the U18.
So the U18 is currently cooling its heels at my place. But it is quality, so for now I'll keep it around for the rainy day I have a higher quality USB audio source to try it with.
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