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| Romy the Cat's
personal site dedicated to advanced audio and evolved music reproduction
techniques
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For better or for worse, I also tend to think of the "tube buffer" as a gimmick. I wonder if one of our readers has an idea, what are the benefits of the tubes used in this case? Why not a discrete version of the op amp, or just a decent modern op a...
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N-set, have another look at the Chimera "bias", and the sophistocated way the diodes effectively buffer the gain stages, also the way the caps are staged over the tiered ground planes. Also check where the Ls are with respect to the signal. Perhaps...
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No question the thing needs a good buffer, anyway, and I would prefer to have it single-ended, just so I don't have to change everything over to balanced to make it work. As far as features, including the number of inputs, why not have a +/-modular,...
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Hello,Here's an idea - uses a resistor in series with a current source on the negative supply to drop the voltage to the 6c33. Not sure how happy (sonically) the 6C33 will be with a 50k resistor on its grid. It would be huge problem at HF a...
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As with everything audio, one has to put it in context in order to evaluate it. In my case, the ML2s have a reasonably "high" and stable input impedance, the TAP TVC has a reasonably low (and totally stable) output impdance, and my cable runs are sh...
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Well, there's noise, attenuation and impedance to reckon with, at a minimum.The TAP TVC I use claims that the step circuitry itself is "out of the signal path". OK, fine; but so what? Doesn't the voltage have to "cross" something, somewhere, at som...
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"Practically it is horrifying in the very tiny world of lower bass’ tonal and dynamic discrimination. In fact, it was not only there but pretty much everywhere and it always filtered out something."I wonder if it is the reactive components (blo...
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Hi,[quote user="Romy the Cat"]All that I need was some kind of vacuum tube buffer that would have no-gain of a very low gain and that would be sonically completely transparent.[/quote]Completely transparent is very hard to do. Try the following:6AS7 ...
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I did not use or know anyone who uses anything by Borbely but Placette basically is the same idea – a discrete op-amp. It has also a proprietary switchable voltage divider and assembling is “made for transparency”. If not Placette then I still would ...
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The reads of my site know that for many years I am a huge
fun of the Placete Active preamp. In my new listening room I faces a problem
that I have not enough gains with some material. The room kind of big and it is
integrated with video. Many vide...
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[quote user="KOTriode"]The preamp has the classic tube regulated power supply using 5R4, 6AS7, 6SJ7. It is transformer coupled output and has no capacitor in the signal chain, the gain is about 8db, so it is not a buffer. For convenience, it does...
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I did not make my mind about it but I have some “concerns”. Using SS amps and hearing different SS amps I do not like their bass and the notion of a powerful enough DSET to be able to drive ULF in A1 was born. Sounds logical. However, recently I ...
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A few days back I got rid of the 60-year old Germanium glass diodes in the REL detector and put in there the regular 1N4148 4pF low-signal diodes/ it was quite positive improvement. I need to be said that detector diodes are not the regulars diodes b...
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Roman
I have a problem with navigation on your site so I probably missed the post explaining why preamp should bare the response for absolute transparency ?You reserve the right for the amp to inject an X factor and the sources can do what they wi...
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Adrian, I wrote extensively about the TAP in its own thread. Given good electricity, the pairing of K&K and TAP is a pretty clean gain path for the cartridge, with far more range, color, etc. - everything you'd want - in the end than the pr...
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Thanks, Jim, and thanks to everyone who replied in direct emails. Summarizing what was advised to me it looks like as now the input impedance of the amp is around 4.5K. That was roughly what I would like to have, though I would like to go even furthe...
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This subject of comparing the quality of ML2 and ML3 sound is very interesting and I do not think that it will be ever observed in public. I hoverer do have interest to learns about comparative capacity between properly sounding ML2.0 and ML3. The M...
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I know it does not make any sense but it looks like the power line before PP3000 does matter. I took today my large 3kW isolation transformer and place it between my dedicated line and PP3000. I lost my lower bass, simple as that. Yes, the isolation...
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Nope I’m not familiar with Octave Research OR1. I heard about Andy Rapapport but I never heard or have seen his amps. My thinking about all of this has littler rational and even less experience. I would never think about SS but the phenomenal success...
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I know, I know, it is absolutely not NECESSARY and I do not think that I see a need for it. I however see that it might be USEFUL in SOME cases when a recording was mastered by a complete idiot.
So, I wonder if anyone comes across to very high...
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The preamp has the classic tube regulated power supply using 5R4, 6AS7, 6SJ7. It is transformer coupled output and has no capacitor in the signal chain, the gain is about 8db, so it is not a buffer. For convenience, it does has a remote control. It i...
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The Morons™ at AA’s between selling to each other what they did not like and topping each other on their shoulders came up with a subject what horn installation would be if price would be no object. The question is semi-foolish as price is never ...
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[quote user="steverino"] Sorry for the potentially ignorant question since I do not yet own one. Can't you remove the battery pack from the unit and see what the sound is like? According to the Pure Power web site the battery packs are optional so I ...
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I am not completely thrilled with TwoGoodEars new crossover.
http://vinylsavor.blogspot.com/2012/01/making-of-line-level-crossover.html
First of all , Stephano has a preamp with tube out stage. The guy in his post says that the l...
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Had some fun experimenting with 6e5p driver stage.playing with difrent output transformrs and resistors found that the stage can drive a speaker with ground connected to air. mabye this is widley know i did not know. + of speaker connected to bad ou...
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Does anyone really have the resources, and the patience, and the evolved audio/musical discrimination to develop a 4 or 5-way FR speaker system from scratch, including each and every driver? I can actually see a "theoretical" benefit in using field ...
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[quote user="noviygera"]
Murat,
I was looking at your midbass horn design and I am wondering, how are you planning to time align that long midbass with the rest of the channels that seem to be time aligned. I mean, currently the midbass is phys...
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Amir,you have now posted twice that "proper" USB is better than SPDIF. The problem is that it isn't, unless someone makes up rules to define their own sense of better. The problem here is that they have not defined anything that is better. Both metho...
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[quote user="Romy the Cat"]fiogf49gjkf0dItem, you are not getting the point that ripping implied the initial read of CD by CD-ROM drive and their possess looks like kills the quality of the file you made on your “super PC”. If you imply that your PC ...
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[quote user="N-set"]... I cannot imagine where the fuck I should have a loop??? [/quote] And you are not alone. Any single person who is chasing noise in phonostage ask himself the same question. I assure you that sun of later you will find it and it...
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