POP sound when turning off TT

@ibmjunkman, the OP might not want to turn the amplifier off each time to change a record. 

Not familiar with the TT. You have to power it off to change a record?

@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.   

Clearly a problem in the Rega PSU.  Likely there is a poor contact in the on-off switch or simply the noise of switching it is being picked up as an RF signal by the cartridge and amplified.  What @testpilot said.

Solutions:

1.   Get the PSU tested and serviced by a Rega agent.

2.   Try moving the PSU further away from the TT if you can.  Indeed, you can test my explanation by moving the PSU to and from the cartridge.  When nearer, the sound will be louder.

3.   Try shielding the PSU by putting it in a metal box.

@ibmjunkman   "Not familiar with the TT. You have to power it off to change a record?"   If it is wished for the TT to be stationary when a record is changed then, yes, all TTs have to be powered off.  At 33 rpm (but not 45) I change records without powering the TT off.  Nothing has ever come to any harm.

So my lowly Pioneer PL-630 is more technologically advanced than all these high end TT in that I can stop rotation by moving the arm to the rest point without pushing the on-off button? Think I will stay in the Stone Age. 😊