Thanks gonk.

The popping noise comes through any speaker being fed by the 950.

The Rowland only makes the noise(s) when its input is switched to the 950 source. For regular 2 channel listening I feed the Rowland direct from a sony 9000ES dvd/cdp on input 1 and it is dead quiet. For watching DVD, the digital out audio signal feeds the 950. The 950 in turn feeds the L & R fronts through the Rowland and the other 5.1 channels are run by a 750amp. The 750 is turned on by the 12v trigger from the 950. The Rowland is always on (no on/off switch).

I have all devices plugged in to a Monster HTPS 7000 balanced power conditioner, which is on a dedicated 20amp circuit. This includes the TV, sat. receiver, dvd/cdp, 950 and 750 gear.

I will re-do the signal and power wiring routing to see what that does. If its not that, I guess it may be a part failure inside the 950.

I will let you know if I discover something.

Thanks again,
Ken