s610 vs a810 vs. a720/820 series in RMAA tests?
May someone please do RMAA tests for NWZ-a720 series, s610 series, and a810 series for 16ohm load. I think these players sound different. I think the a810 series doesn't boost the high freq. like the s610 series does. I have no idea how they changed the newer a720/820 series.
May someone test prehaps one or more with the headsix amp (maybe using loads of 16 and 80 ohms). And maybe see how the 'clear stereo', 'DSEE', and 'clear bass lvl1' options effect the results.
Thanks!
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