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Original Message

RE: More, more

Posted by Charles Hansen on February 5, 2009 at 10:39:33:

>> Ready to read more about the DAC- chip selected, different approaches to analog output stages, battery versus AC <<

We are finalizing all of the details by next week. The DAC chip is currently a Burr-Brown DSD1796. The analog output stages are (naturally!) zero-feedback and fully balanced. The prototype at CES had circuitry similar to the CX-7e MP CD player, but next week we are going to listen to a new discrete circuit I came up with. We'll see which one sounds better. The cost of the two approaches is (surprisingly enough) not all that different.

We've never used batteries. They have some great advantages sonically, but are obviously a pain in the neck practically. So what we try to do is make an AC power supply that sounds as good (or better!) than batteries.

>> There was a comment previously on this forum (by Benchmark) that asynchronous may force the computer to adapt to the requested sampling rate such that it may not be able to keep up accurately <<

That's news to me. Do you have a link to that post?

We license the "asynchronous" USB technology from Wavelength. Gordon is a really smart guy, plus he has sold hundreds of his DACs. If there were a problem, I'm sure he would have heard about it by now.