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Telstar wrote:

What's really different, besides AC and capacitors is the DSP. Meitner IDAT algorithm makes a difference for sure. Also, I dont know if it uses any digital and analog filters, the lack of may improve sound transparency.

I do not know certainly what filter Bidat uses. The guy who but the custom output stage (depicted above) and replaced the Bidat’s filters with his own filters told me that Bidat uses 2 order analog filters. Still I think that the hard of the Bidat is the freakish IDAT processing and accidently-successful cheap and primitive but very “interesting” sounding out stage.

As I understand the freakish IDAT concept is that the DAC has 2 separate converters with different architecture per channel. One converter is better suited for fast signals and another is better for slow signals. The DAC read the input stream and decide what kind signal it is and sends the conversion to one or to another converter depending on how fast the music was. Then the stream somehow combined again. So, theoretically it is elegant solution but it sound very scare and prone to destroy sound’s fabric completely. However, it does sound very fine all together, go figure.

BTW, it is highly possible that IDAT is works very nice juts being combined with specifically-bad output stage. A few years ago there was somewhere a conversation about the 5 patents that Meitner had for his DACS.  I asked John about it and he told very interning – he said the patents are fine but they have no relation to what Bidat does Sonics and the entire “kink” in Bidat is in the very specific implementation. I wish I know more, or let me to put this way: I wish I were be able to understand more. :-)

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