Hello,
I've a Decadac with 7th order LP filter, Elna Silmic II Caps and Sumusu audio resistors in I/V circuit.
Output caps are not installed, the standard ones are provided but you can put the caps you prefer. The dac sounds wonderful. more info :
https://www.diyaudio.com/forums/dig...rbcd-multibit-dac-design-108.html#post6465106
80euro+shipping and Paypal fees.
Best regards.
Guglielmo
Italy
I've a Decadac with 7th order LP filter, Elna Silmic II Caps and Sumusu audio resistors in I/V circuit.
Output caps are not installed, the standard ones are provided but you can put the caps you prefer. The dac sounds wonderful. more info :
https://www.diyaudio.com/forums/dig...rbcd-multibit-dac-design-108.html#post6465106
80euro+shipping and Paypal fees.
Best regards.
Guglielmo
Italy
Attachments
Is this an oversampled design? If so I am not interested.
Otherwise the stacking of the DACs looks interesting but the steep filter suggests it was oversampled.
Otherwise the stacking of the DACs looks interesting but the steep filter suggests it was oversampled.
The design is NOS - no oversampling. The steep filter is due to the fact that no oversampling is used - the frequency band to be rejected in NOS is very close to the wanted frequencies which calls for a steep slope.
yeah, that confused me as well, the steep filter suggests NOS, not OS, that's kinda the point ...
I use an Audio Note Dac kit and it is NOS. It used a basic single pole filter in it's original configuration but they later changed the design to no filter at all. This DAC is my favorite. I think the ultrasonics that get through are an insignificant issue.
I used to think the same way in my early days of building TDA1543-based DACs (10+ years ago now). But then I got curious to know if filtering those ultrasonics away made any difference. The result I got on a TDA1387-based DAC I documented here : Digital that sounds like analog | What's Best Audio and Video Forum. The Best High End Audio Forum on the planet!