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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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I'm only aware of PS audio as an alternative. I wasn't crazy about the original power plant but they introduced new models recently which may be better. (I did not get favorable results running my turntable through the PurePower and I have one of the...
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You are correct, I neither know nor expect, really, that the person from whom I bought the 6N6Ps tested them in a way that will make any difference to me, and I certainly did not buy them with any particular sense that this was the case.&nb...
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A clue!You are not using the ground on the PP3000 unit and have ferrite packages on the incoming mains supply.I am guessing that you have fitted a clamp directly around the power cord.If this is the case, then you are using the ferrite on the ground ...
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Well, I hope that Romy is the only one who still thinks I'm tube rolling, because this post is even farther afield (although it is almost a spin off from the previous posts about AC/grounding).I finally got around to adding not-terrible po...
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[quote user="Lx_"]If the 2000 output is really clean of any noise and only the ground carries whatever comes from the house ground, then how do you explain the tremendous sound improvement that lifting the input ground provides? I find it difficult t...
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The more I think about the more I feel that my old idea to install a timer inside the amp that would measure the time the amps is running was not so bad. I never in fact implemented it but it would be convenient to have it. What I am thinking is that...
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[quote user="Romy the Cat"]
I wonder if anyone heard any deserving attention headphone amplifiers? Any further advise to a person who never imploded any dedicated headphone amps?
[/quote]Did you have a chance to hear Single Power gears? I'm p...
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[quote user="Romy the Cat"]You claim that it was “everything plugged” syndrome but I was writing about it years back and I thought that it was what you were doing. Even if you did not then in my view the superbly positive contribution of PP was still...
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What I have is a subwoofer made by ACI; no information on the amplifier used other than it uses a two prong power cord, no ground. When I hooked it up to the APS 2000 I got a very loud pitched hum. Taking if off the 2000 and plugging it into a...
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Jarek, please re-read my previous post, also Romy's recent post on this subject, carefully. I'm afraid you are in for it once you start effing with power cords, for all the reasons we've listed. Here in the US we have a company that sells used cord...
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I am not sure how much time I will have coming week to experiment with audio but if I do then here is what I would like mote have done. This week PurePower will return my second PP2000, presumably fixed. If this new unit sounds identical to my curre...
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[quote user="PurePower"]The PurePower batteries provide power to the AC regeneration whenever it is required. That could be during a black out, it could be during a brownout, it could be for a fraction of a cycle it could be for 10 minutes. The simpl...
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Indeed a good review. The author in my view spent too much time promoting the theoretical benefits of symstrick power. I do not degree with all those theoretical justifications and the very practical natural nose rejections of symmetric power but it ...
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First: Good on you John, so few have spent any time on core material properties. I have developed a method for passive self demagnetization in E/I core. Works a charm except that higher perm materials become harder to drive and the driver circuit beg...
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I just had a conversation with the guy who runs this JPS Lab. I did anticipate much more idiotic presentation, similar to what they have at their web site. To my surprise the gay was rational. It is not that I agree with all that he was saying but it...
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I was reading Paul’s comment about elasticity and the Bad’s comment about the electrical field attached to a cable and suddenly a very absurd notion popped to my head. Do not take it literally – this is just a brain-storm-like vision.
So,...
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Ok, Lx, that does makes more sense. Perhaps I misunderstood you as the impression I got from you was that you recognize some instant events through the PP in reaction to events outside of the PP. THAT is imposable in my view. You did well describe no...
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[quote user="Amir"]fiogf49gjkf0dfi guess the problem come from usb cable. these designers like AC Conditioner designers just kill dynamics. they remove noise but then kill the dynamic.[/quote]the dynamic increased after power cord break-in and using ...
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Thank you Paul! Very clever idea with the noise drain wire (I saw it also in of the Belden cables, 19634)Unfortunately in my case I have to ground via the power cord (no chance for a dedicated ground).Tried to locate Ohno Cu plugs to no result, will ...
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Paul,Have you tried Neutrik powerCON? Do you have any opinion about them? I personally like the locking system idea.EDIT: not power cord but digital, ANUK have a Palladium plated SILVER foil cable (Black Pallas). Have you tried anything palladium?Ch...
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[quote user="Canuck"]Romy Do you plan on trying the new PurePower Plus and if so when? Maybe they should send you a loaner to try for a decade or so. [/quote] Canuck, I do not know. I am for sure would like to try it and I most probably will. I hav...
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I separated my two of my PP2000 in my rack with 3 feet space and run everything from one PP2000 and both Milq power amps from another PP2000. I also routed the incoming power cords that that are far from each other and far from outcoming power co...
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[quote user="MINGSU"]Most users use it for 200Hz down to 10 Hz above the horn cutoff frequency.[/quote]
Ming, I do not think you are “getting” what I am trying to say. OK, let to make bold statements: the people who use the 24Hz SG146LD4 drive...
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After eons of construction, I've finally completed my version of the 801A premap, based on Ale Moglia /Bartola Valves design with his Gyrator anode loads, SiC bias and Rod Coleman filament supplies. 6 inputs, switched by an Elma switch and Dave S...
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Thanks all for the replies! Looks like a very risky business.Given the work involved and highly unsure effect, I'll happily skip the shielding. Your comments suggest that the high capacitance line to ground (which the shield would happily provide) is...
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[quote user="Vance"] Romy, it takes several months for those blackgate caps to fully calm down…. [/quote]
Actually I take more like several decades and then 5 years after you each time shut down the unit for 5 minutes. I am known to be not a huge fu...
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[quote user="drdna"] What was more concerning is today some 60 Hz hum also re-emerged in the system, sounding like a vibrating cell phone going off in the back of the room. It was interesting how it was sort of localizable, but the hum is annoying. A...
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hi romy,it seems the audio review is concerned mostly with the science of reproduction of sound "event", it is easier language than the the language of aesthetics in an art form. funny that when people go to a museum and have an emotional reaction t...
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can this be anything else but futile?1) If analogue the first thing be the cart, if digital the payer?2) If analogue the phono cable being the MOST important one in the whole system, and could yield some noticeable improvement.3) Has the system got a...
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[quote user="rickmcinnis"]I think Romy has been unbelievably tolerant of this since the last thing I think he ever intended this site to be was some kind of audio Dear Abby.Things go wrong. At this level of the hobby things do not always work in eve...
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