Well it was worth a play, but I agree with Andy's view - at least NiMH batteries aren't as good as a linear regulator and appropriate smoothing caps.
I tried 3 AA cells to power the HCU04 which is acting as spdif buffer and oscillator for the 11.29 Mhz clock [12 Mhz clock lifted]. On a scope I can clearly see noise at the clock frequency on the spdif output in this configuration - indicating supply impedance. With a linear regulator and a couple of Oscon caps this is much less noticable. Sound wise the linear reg has more focus too. [NB you can only see clock noise once the 12 Mhz crystal is removed so the clock and spdif signals are in phase] Adrian -- Triode _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
