> Do u think the pop sound when on/off the 909 will damage the speakers?

I cannot say it so or not in general. In my case, I did not have any damage when
using the
909amp with another pre (a valve pre).

> Is there anyway to get rid of the pop sound?

Uhm, I do not know. In my case, the stronger pop sound was made by the valve
pre. So I first
turned on the pre and waited few seconds before turning on the 909. In this way,
the pop
sound was moderate.

Regards
Roberto