Here's the output from the standard (UK spec "Unifive USK300520") SB3 power supply. Measurement bandwidth is probably only around 20MHz or so, my scope probe is rubbish and desperately needs upgrading. Load resistance is about 11 Ohms, so we're drawing a little under half an amp. Noise typically gets worse with increasing load.
[image: http://www.cawte.nildram.co.uk/Jitter/KF8L2618.JPG] So, we see a switching frequency of about 200kHz, and about 10mV p-p of noise. That's actually remarkably good for a cheap little 'wall wart', though it's some way from being an audiophile-grade level of performance, and might explain why some people claim an upgrade is worthwhile. -- AndyC_772 ------------------------------------------------------------------------ AndyC_772's Profile: http://forums.slimdevices.com/member.php?userid=10472 View this thread: http://forums.slimdevices.com/showthread.php?t=34749 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
