Inputs shorted in 'standby'?

Yes, the distortion stops if no ICs are connected to the M5 Line Out.  There is also no distortion of the M5 Line Out is connected to the NAD and the NAD is 'on'.  But if the NAD is in 'standby' then I hear distortion at the speaker outputs of the M5. 

BTW, Musical Fidelity is telling me that the problem is caused by the NAD's inputs being shorted when the NAD is in standby.  But I'm not convinced that the NAD is actually shorting the input when it's in standby.  I put the question in to the NAD tech support line, and their response was:

"In standby mode, the amplifiers turn off and the power supply of the unit enters a 'power-saving' mode (<0.5W)".

But that didn't really answer my question, so I asked again about the shorting of the inputs, and hopefully I'll get a definitive answer.

Well, hopefully the M5 didn't get damaged.  I'm not sure what kind of state the 316BEE inputs are in when the 316 is in standby, so I don't know if the M5 output was completely shorted or not.

Thank you all for your input so far, I appreciate it.

Question: Are 'fixed outputs' on integrated amps really just meant for going to a recording device of some kind?  It seems like taking them to an analog input of another integrated amp or receiver can be problematic if leaving the 'receiving' integrated amp in standby. 

I guess I can always just turn the 316BEE 'on' even if I don't want to have the music on in the other room, and just turn the volume down.  That way I won't have distorted audio in my main room due to the 316 being in 'standby'.

Strange, though - Before I bought the M5si, I used to do the same thing with my old NAD 7400 receiver.  I'd run a fixed output (tape loop) to the 316BEE.  But when the 316 was in standby I never had the distortion issue that now have using the M5.  I guess certain units are just more compatible with others?

Thank you,
Greg

From what I’m reading, I guess that if I want to run a fixed line out to another integrated amp, there’s no guarantee it’ll work when I have the secondary integrated amp in standby - it just completely depends on the particular units that are involved.

So if I want to have independent volume control of a second pair of speakers in another room, is there a better approach than the way I’m trying to go about it?  (If I want a completely wired solution)

Thanks,
Greg