I appreciate all the "input" to my iPod connection problem! billyTHEkid, thanks for directing me to the solution! The volume control on the Kingston dock 500 remote does indeed control the audio output level of the dock. (Had I read the troubleshooting guide maybe...). We now have "normal" audio output on all 990 functions including Zone 2.

Just another example of how this forum is an invaluble tool to all! Thanks again, now for some serious listening!