POP sound when turning off TT

@bound4h

It sounds like to me that the Rega Planar 6 has a linear power supply (with a transformer), and when it is switched off, it’s emitting a spike into the power line, which is being picked up by CAX81. The Schitt Mani may have used a switching power supply, which didn't emit the spike. Do you have any kind of power conditioning gear? If so, I would put the Rega power supply on it, and see if this helps cure the problem. You could also simply leave the Rega power supply powered up all of the time, as it probably consumes about a dollar of electricity (or less) per month, or, turn off the CAX81 amp first, before turning off the Rega power. If you’d like to take it a step further, I’ve had great success in using Tripp Lite Isobar Ultra’s on devices that were emitting spikes into my house AC wiring. I would place the Tripp Lite on your Rega power supply.

Tripp Lite Isobar Ultra

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

@bound4h

Would this work?

I don’t know, but it probably doesn’t have the filtering that the Isobar Ultra has. The Line Conditioner is probably overkill for what you’re experiencing, and since it has a rather large transformer in it, you may be introducing more problems (like EMI) into the scenario, compared to what you’re experiencing now. If the Isobar Ultra doesn’t fix your problem, it’s still a fantastic surge protector for your audio gear.

It’s also possible that there is some arcing taking place on the Rega power supply switch, and the arcing of this switch is reaching into audio frequency territory, which is broadcasting this signal as RFI. It’s possible the Schitt Mani was able to previously reject this noise, but the Lehmann Audio Black Box SE can’t.

My best suggestion is to try the very affordable Tripp Lite Isobar Ultra. It has eliminated so many pops and clicks (from home inductive appliances) that I was experiencing before, that I was never able to eliminate.

Ok picked up the Isobar.  Thanks!