I have been quite puzzled, and others seem to be so as well, about the "engines". Mind you, this is speculation. I believe that I have figured it out, though I may be mistaken. Lampizator does use different "engines" for different DACs. As far as I am aware, this isn't really explained by them. Furthermore, why an R2R DAC even needs an engine isn't explained as far as I can tell.
So, where does this leave us? Well trying to think through the different possibilities logically I think that I may have figured it out.. The "engine" seems to me to serve 2 primary functions. It seems to be the reason for the DACs being able to automatically switch between different formats with out intervention from the operator. Beyond that, I believe that it is a digital filter which allows for signal manipulation. HQPlayer allows a similar manipulation. You feed the analog signal into it, and it can apply a host of filters, etc. So, they tweak the signal for each line of DACs they produce. The filter/engine for the Baltic is tuned for the Baltic's circuit, the Golden Gate II has a filter/engine tuned just for it, etc. So, beyond just the tubes, Lukasz has tweaked each DAC to get what he believes to be the most out of it.
I believe that this is the same technology that PS Audio uses which allows them to periodically "upgrade" their equipment after you purchase it.
So, where does this leave us? Well trying to think through the different possibilities logically I think that I may have figured it out.. The "engine" seems to me to serve 2 primary functions. It seems to be the reason for the DACs being able to automatically switch between different formats with out intervention from the operator. Beyond that, I believe that it is a digital filter which allows for signal manipulation. HQPlayer allows a similar manipulation. You feed the analog signal into it, and it can apply a host of filters, etc. So, they tweak the signal for each line of DACs they produce. The filter/engine for the Baltic is tuned for the Baltic's circuit, the Golden Gate II has a filter/engine tuned just for it, etc. So, beyond just the tubes, Lukasz has tweaked each DAC to get what he believes to be the most out of it.
I believe that this is the same technology that PS Audio uses which allows them to periodically "upgrade" their equipment after you purchase it.
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