2. amps-preamps
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Inputs shorted in 'standby'?

Hello,

I am having issues when connecting the fixed line out of my M5si integrated amp to an analog input pair on an NAD 316BEE (to have independent volume control for another set of speakers in another room).

All is OK when both integrated amps are powered on, but if I have the NAD in 'standby' and am just listening to the speakers connected to the M5, I hear some distortion.  Is the NAD shorting the inputs when it's in 'standby'?

 

Thank you,
Greg

rhythm5
jea48
4,733 posts
 

I hear some distortion.  Is the NAD shorting the inputs when it’s in ’standby’?

I don’t have an answer to your question. I would suggest you disconnect the ICs from the M5 when the NAD is in standby , when hearing the distortion. Does the distortion stop?

FYI, you can short-out inputs but you should never short-out outputs.

.

rhythm5 OP
19 posts
 

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. 

rhythm5 OP
19 posts
 

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.

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