My SMSL DA9 was freezing after i turned it off and turn on. Only solution was to unplug the power cable and plug it back in.
SMSL also produced weird sound from box. Really high pitched noise, something like coil whine. I could hear it when i was close to unit. That noise was leaking to speakers as well.

I've sent unit to seller and I got new one. Free of this flaws.

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