I have added two further tweaks to the system tonight:

1. The Vertex AQ Jaya plug-in mains noise suppressor that I purchased from steveeb (Electric Beach) is plugged into the ring main very close to my system.  I now have a Vertex Jaya, PS Audio Harvester x 2, Isoplug, Russ Andrews Silencer and Isotek Neoplug all plugged into the house circuit.  The PC is on its own isolation filter and the TV is fed through an Isotek Mira.  Then the clean-ish mains goes through my P10 regenerator.  No-one could say that I don't take mains cleanliness seriously, and it really does pay dividends.  The cumulative effect of the different devices is to give a profound reduction in mains-borne noise manifesting as a very quiet background and low noise floor to the music, helping the resolution of very fine detail.

2. After some struggle, I have the P10 regenerator on four Black Ravioli, matching the others under key components in the system.  This wasn't easy due to its 33kg and the difficultly of moving the bugger with the tips of my fingers.  It's not quite level on four feet, rocking slightly.  However, I am assured that the BRs will settle and the P10's weight and will end up sitting evenly on all four.  This is key to how they work, requiring contact with the flat underside of the component.

Initial listening has given a further out-of-the-box experience, even the tape noise on some recordings floating in space and not at all attached to either speaker.  I will leave all this to settle and will report back in a few days.


 

It's sounding that way, John. I hope they settle evenly under the P10, otherwise it'll be a big coin going under one of them.

I've also ordered a Kemp Elektroniks SNS and an Isotek EVO3 IsoPlug, to add to the list.

I've listed each one, but it's the cumulative effect of different filters spread around the house that works so well.

A quick update: thanks to @tonyc loaning me another set of Black Ravioli feet, I finally pulled the P10 regenerator out, removed the RDCs and placed it back in position on the BRs. Due to a slight warp in the shelf, the P10 has crushed two of them down but still has a very slight rock. I shall leave them for longer and eventually I feel it will settle. More importantly, some more of that magic opening up of sound and disappearing of the speakers is still happening, as well as the Belles and Coherent cables fully running in. Tony was right to suggest the P10 as the final component to receive the BR treatment.

MikeMusic I am working on a collated article about my mains treatments.

No, none at all. They can't, they're passive and can only absorb. The final proof is in the listening, of course. My noise floor is exceptionally low at night. The clarity of fine detail and lack of harshness speak to the cleanliness of the mains feed into my system.

Any idea what sort of impedance your earth line is 'showing' to the noise frequencies that the filters might be extracting?

It's a serious question as I've been pondering over such issues for some time - but too busy to do anything about at the moment.

Cheers. Bill

Do you find the kettle of water improves things at night also (when your noise floor is low)?

I wonder if different cable (lower impedance to the relevant frequencies) for the earth line (at least between your kit and the earth spike) would also improve things?

Cheers. Bill

When I had my mains renewed including a new board re bounding the earth and dedicated spur I no longer needed balanced mains