the ticking is what I'm talking about. Audible in your sample as well. That's the sound attributed to your CF card. My Kingston card creates similar noise. On my SanDisc card there is quite a bit less (sample attached), but it's still enough to be audible on quiet segments of acoustic shows being recorded at high gain. I've had that problem fairly frequently. If you're strictly recording rock bands it's unlikely to be an issue, but unamplified jazz is a different story.