POP sound when turning off TT


Equip:
TT: Rega Planar 6
Phono Preamp: Lehmann Audio Black Box SE
Integrated Amp: Cambridge Audio CAX81
Speakers: Monitor Audio Silver 300

I just swapped out the phono preamp with the Schitt Mani that I had.  I immediately noticed the humming/buzzing sound was gone when absent any source.  Probably a grounding issue.

However, now when I go to power off the Rega (it comes with a separate PSU), I get a loud POP out of the speakers.  Keep in mind the phono preamp is still on.

When I had the Schiit, albeit a much less quality preamp, I never got the pop. 

What can/should I do?  Ground the phono preamp to the CAX81?

bound4h

Showing 3 responses by bound4h

I don't have any kind of conditioning gear currently.  Would this work?

 

  

 

@ibmjunkman yes unfortunately you have to turn off the psu in order to stop the rotation.  
 

@testpilot are you insinuating that something internally has failed, or that the failure is inherent to the design and I will need to solve for it with other methods (aftermarket addon, like conditioner, shut down sequence, etc).  Just want to be sure I don’t have a warranty claim that I should file.