After several days, I'm pretty pleased with my E70V. It's got a smooth, clear presentation that's similar to the D400EX. I haven't tried optical or RCA, but USB is good. I bumped it from 4V to 5V and set it on dac-only mode. I haven't heard the older E70, so can't comment on any differences/similarities. The E70V is a solid, no-frills dac at a decent price ($450 at Apos Audio).
EDIT: I should've noted that dac-only mode disables the rotary knob for volume adjustments. All other functions still work.
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