Digital inputs in high end 2-channel preamps


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Why don't we see digital inputs in high end 2 channel preamps? With the proliferation of digital devices, a digital input seems like a natural. Is this something we can expect on the horizon?
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128x128mitch4t
And we're now seeing more and more items marketed as dedicated DACs that can also do some source-switching and volume control -- that is, act as a preamp in their own right: Benchmark and the new Bel Canto 3.5 come to mind. So, seems indeed like there is a growing convergence. That said, suspect that there will always be a place for stand-alone, single-purpose units.
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The latest issue of TAS has coverage of the last CES and there were a dozen or so new preamps or integrated amps w/ D/A built in or as an option.