Patrick Dixon Wrote: > I can't speak for RW or Boulder, but > > a) Improving the basic clock stability of the SB3, and > > b) Optimising the SPDIF output circuitry, by better matching it to 75 > Ohms and equalising signal rise and fall times > > both reduce jitter at the external DAC and have a dramatic effect on > audio quality (IME).
Thanks! I suspect the effect of these tweaks is highly dependent on the properties of the external DAC. The stock SB3 has less than 100pS jitter on the coax output. Have anyone seen measurements on any of the modded versions? One other thing that puzzles me: One of the common SB tweaks is to replace the stock D/A chip ( Burr-Brown PCM1748) with the "KE" edition of the same chip which has slightly better specs. As far as I can tell for TI's website, the price difference between these two chips is only 10 cents. So, if the "KE" makes sense, why doesn't Slim Devices use that in the first place? -- blackbear ------------------------------------------------------------------------ blackbear's Profile: http://forums.slimdevices.com/member.php?userid=7015 View this thread: http://forums.slimdevices.com/showthread.php?t=26337 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
