I *suspect* it's the power pic waking up the empeg for about 300ms during sleep; the empeg then shuts itself down. This can happen every 10 minutes or so, though after the first event it should set the power pic to "never wake up" mode. I'll check the code when I get into the office.

It only takes about 200mA (the drives don't spin up & the display doesn't come on in this scenario) for a third of a second, but this appears to be enough to upset your alarm. Hmmm.

Hugo