The conclusion so far is that john Swenson considers that digital filters don't sound good unless they are on separate FPGAs -he doesn't like the ones on the dac ships themselves (also IIRC some time ago he said that the ones on the Sabre Dac are OK.)
AS I understand it conventional engineering thinking is that a well designed DAC is not source dependent. Well designed does not mean expensive. Curiously the ones which might be source dependent are those designed for/by audiophiles. At that point, I suggest that you draw your own conclusions. [by way of a side turning i have been meaning for a while to see whether I could test JS's hypothesis by implementing a sinc like (linear phase, at least 80 db attenuation at nyquist) filter in Sox which would mean that the half band filter in my MF DAC did very little (there being no frequencies for it to attenuate- although I don;t suppose i could really cut it off entirely without having -80db at 20kHz; but presumably a transition band 20-22kHz would mainly take it out of the equation). I assume that filtering in Sox should work at least as well as the separate FPGA. I have never got round to working out how to do this though especially given the upsampling to 96Khz which sox does at present courtesy of phil's setting for inguz.] -- adamdea ------------------------------------------------------------------------ adamdea's Profile: http://forums.slimdevices.com/member.php?userid=37603 View this thread: http://forums.slimdevices.com/showthread.php?t=94352 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
