The MPAV9000 was the control center with Radio/CD and Tap deck for the 2 Way AV9000.
Only working with software < 1.2.
On an AVANT will this Sytem work, but without any Display information like Source and Track.
It was an cable connectet remote System with audio Sources.
A beauty system in combination with the famous AV9000, i like these TV.
Ulf