My "secret" DAC built was returned to me awhile ago. Probably less than a month since it having a tour to several houses to get an audition.
As you might know the reason I built this "secret" DAC is to gets what people thinks about the sound quality without knowing anything for what the DAC use inside. Because the perception can be ruin the objective judgement and I don't want that.
The result from each auditor still vary, one might say this DAC sound very good in the mid-range but lacks of high frequency details and he wondering if the sound-stage can be improve, then this might be another great DAC.
The others said this DAC is having inconsistency sound quality level, depends on the music played or even depends on what the next system are hook into it.
And the others cannot use it at all since he only have an optical output from the source. Sad.