Our Review/Thoughts

All of mine, though, are good enough that they don't need boomy bass or artificially expanded soundstage

The low setting on the crossfeed switch collapses the sound stage, presumably to compensate on early stereo recordings where instruments are panned hard left/right

* They love to brand commonplace engineering choices in order to sound more innovative than they are--which is sad and unnecessary, since they do make solid products

So, the switches turned out not to be useful for me

The low setting on bass is subtle and I leave it on--it's about the same as the IDSD Nano by itself

Note that some professional reviewers seem not to have read the manual or done proper comparisons, since they think they hear the low setting on crossfeed as expanding the soundstage, but just less aggressively than high

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