Thanks, Al! Awaiting your response.
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Iām listening to my system without any grounding connection, and quickly found out the term ānever sounded betterā does not apply.
I will try RouteMaster/City again now I got a silver grounding post on P15. 
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Interesting! Let me knowā¦
Finally also my City arrived today but Iām out for dinner, tomorrow Iāll give it a try and can tell you if it works in my system. How many dinners these days, canāt live eating and drinking, drinking and eating, Iām growing old!
Letās go grounding, my friend!
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My days of eating out often is over! Now I am collecting Medicare benefit for the first time, I have adapted a healthier diet too. At lunch my wife will feed me a boiled egg and a glass of vegetable/apple/banana smoothie. I still enjoy big dinners. But I lost 2 lbs. and she lost 5 (she is thin already). My problem is I still eat sweets and she does not.
Anyway, I plugged City into GroundMaster 40 minutes ago. The improvement is gradual and subtle. In fact, it seems to take an hour or more to reach the full effect so I am still waiting. The improvement is not just on relaxing and smooth delivery, but there is a tonal richness comes with it too. But to me the improvement is different from PSM-156 with City. I need both for sure.
No, the silver wire does not make additional improvement, I think. But it may surprise me since it is still in the warm up stage.
looking forward to hear your thoughts on City.
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Me too! This is the reason why we have to do (business and friends dinners for Christmas time wishes are unfortunately common torture here) only during these days and they are so challenging for us!
Hope to survive and play music back soon!
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You two should get a room.
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Long distance love.
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The only thing surprised me is our view on black vs silver. We all know silver sounds better, even on my grounding wire! Wait, that did not come out right either.
Well, time for a drink before I switch back to PSM 156, and I think with one City this is the better match up.
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A P20 solves so much of this.
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Hi Al, did your friend and you arrive at any conclusion about multiple Black Boxes?
You may find this interesting
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Love it, thanks for the video! I slept through 9 hours and thatās almost double what I usually had. It must be from the beautiful calming music I have been listening from the PSM-156/GroundMaster comboš power plant could not do that.
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Iāve just hooked up the City in my system, letās start listeningā¦
First impressions?
A general feeling of calm and relaxation already present seems to be enhanced. After an hour the result is tangible but donāt expect a wow effect once you plug it into the socket. I agree with other PSM-156 owners, all the qualities brought by the conditioner are the same, simply augmented.
Itās not a tweak able to reveal a revolutionary improvement, not at all. You canāt hear a night and day difference. Nevertheless it brings a lot of pleasure on the table, silence is profound.
After a few more time playing music, the pleasant atmosphere is growing and other sonically aspects become easily distinguishable.
Instrument are distinctly separated and focused from their different position on the stage, sometimes like if they were prevalent over the singerās voice, sometimes really expanded over the boundaries of the side walls. The air around the instruments is more able to correctly depict the ambience of the venue.
At the beginning bass sounded dry, after a while they became as liquid as the rest of the frequencies, once again, providing calm. They are not perfect yet, need to wait more time to understand why but they are still changing as music goes on.
Details are also present in abundance, never confused or overlaying the general balance.
Acoustic guitars and voices are less changed than before, amongst the improvements Iām noticing, they seem to be less affected by the City. It means that the engagement and lifelike presentation I liked from the previous set up is still at the same degree.
Itās a keeper, it sounds nice. Approved!
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Once you reach a certain level, the little extras are difficult to gainā¦
Two quick questions : Is there a synergy between the Puritan equipment ? Or does it work with another device like a PS Audio ?
Have you compared with Russ Andrews grounding devices?
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Couldnāt agree more.
The GM City arrived yesterday, so I still havenāt done comparisons with the P20 (maybe Donald did last week but feeding the ground wire to the hub RouteMaster not directly to the City).
The PowerPlants havenāt a ground lug and Iād be curious to know if PSA never thought (could think) to implement solutions specifically designed for āgroundingā.
I have no experience with other brands other than CAD. Sorry.
Luca, as I told Donald PSA had a ground lug that at one time they were sending out to owners of the 250 and 300ās for use with REL subs. It replaced one of the chassis screws. Maybe you can get James or Aaron to send you one as it should fit the P20.
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Thanks, Iāve read your previous post.
My wondering was more referred to a general strategy from PSA on that specific grounding argument. Did they already design something internally the PPs or are they interested to design in future a way to specifically address ground cleaning, even with external boxes or whatever? They put large effort addressing current (stable voltage low impedance AC/DC etc etc) so my guess is that grounding remains strongly in their camp.
Your CAD grounding devices may have reduced the GM City improvement on SQ too. I am getting a nice boost from the combo that is quite enjoyable.
After a couple of days of trying different combinations in my system, I can confidently say the PSM-156/GM City made the most improvement, It made more improvement than RouteMaster/City setup in my system.
However, this is not saying RM/City is not effective! I still like the improvement. The next best RM/City combination involved P15. My homemade silver grounding post does a good job. No matter which devices I tried with the three cables, I heard more improvement when P15 is in them.
I need more cables, plus one more City. I do it after Holidays and my coming vacation.
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A few years ago questions regarding grounding boxes was discussed in Paulās videos.
Paulās videos might not be the last word in terms of every body working with r&d and future products, but at that timeā¦ a few years agoā¦ Pauls comment indicated that he did not know how the grounding boxes worked or if they actually work. It was more of a general snake oil or not snake oil discussion.
Since then, much more than a handful of respected companies, many of them primary competitors to PS Audio have jumped on the grounding train and a few of them have gone all in.
PS Audio have started marketing the usage of galvanic isolation, that one likely should not have done if one did not understand some of the interference that can be had on chassis ground or signal ground or in other ways.
The official comment is that all future products will have galvanic isolation (where relevant?). But I have not seen any comments regarding future āgrounding productsāā¦ but if the next gen regenerators shall be competitive performance vise the great tech should get a better dc-blocker and grounding on signal and chassi as an add on (more to sell).
Skipping the AC line of cables and starting to use Audioquest Storm seriesā¦ is also a āgrounding stepāā¦, as the Storm cables try to redirect noice on the mains ground away from the equipment. I do not know how effective that Audioquest tech is, but itās official marketing.
Sum
PS Audio have not to my knowledge jumped on the grounding band wagon but will likely have to. Otherwise the sales of power plants might suffer and the rumors of DACs that measure less than competitors stays put.
But the future is in battery solutions, yet to comeā¦ at a decent price with performance better than a StromTank
At the moment Entreq entry level products and the Puritan City solution are the best deal in grounding town
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Did you try connecting the City ONLY to the P15 unlike the PSM-156?