by, 04-18-2013 at 07:19 AM (1954 Views)
A very nice person has provided me some DAC innards, which will give me the opportunity to put together a semi-customized DAC that employs some thoughts I've picked up from various smart people along the way. Said nice person has requested that his/her identity and that of the innards remain confidential. Out of respect for that request, I'd ask anyone commenting as this project proceeds to please refrain from speculating on those points.
The thoughts I'd like to try to put into operation:
- Vibration control and (two) chassis from maple - see the discussion from Pierre Sprey of Mapleshade here: Maple Isolation Platform
- Internal cabling (if and where possible) with Omega Mikro ribbons - here's a photo from a Positive Feedback article on the Walker Proscenium turntable:
- The minimum number of sample rate and format conversions necessary, and where they are necessary, done by means of software I can control, rather than a chip programmed by someone else. Thanks to PeterSt, Miska, Damien, and the iZotope developer for essentially opening a new world to me in this respect that I hadn't known existed. The parts I have will allow me to play my DSD files natively, so no need to convert to PCM (though Audirvana+ does a very nice job in this respect with my present DAC). For PCM material, I will be able to use software to convert the input to the same resolution at which the DAC chip performs D/A conversion, eliminating any need for internal upsampling.
Right now this is at the stage where some internal parts have arrived, and I'm awaiting the rest. Then after preliminary testing to make sure everything works, it will be time to get down to chassis design and fabrication, as well as ordering the Omega Mikro parts (ribbon and RCA connectors).
Watch this space....