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  1. rbbert

    KeithR's "Dream Speaker" Search

    YG's frequently demo'ed with Tenor amps at shows
  2. rbbert

    The Sound of Analog, the Sound of Digital

    I think the only "processing" is the speaker system Xover? One possible disadvantage is that with a digital Xover one's system automatically becomes multi-amped, adding expense and possible complexity (matching amps to drivers, as opposed to matching one amp to the Xover))
  3. rbbert

    The Sound of Analog, the Sound of Digital

    If there is A>D conversion there should also be D>A conversion somewhere in the electronic chain, does it really matter where? I suppose if DSD had a high enough sampling rate it might not need a D>A conversion?
  4. rbbert

    Are there sonic differences between tape transports?

    For turntables, in addition to speed constancy and isolation (both of which differ significantly and measurably between 'tables, even expensive ones), there are the mechanical and electrical interactions between the table, arm, cartridge and pre-amp; so I don't think it's reasonable to say...
  5. rbbert

    Are there sonic differences between tape transports?

    The top end tape transports probably contribute noticeably less than the various preamps to eventual differences in sound quality. Turntables have a lot more going on mechanically than tape transports, where the only significant variables are likely speed constancy and tape to head contact...
  6. rbbert

    New to the forum: high end music server with Roon Core and 3 x dedicated linear power supplies

    I understand the reasoning, and do appreciate that this is not a "mandatory" feature. Preferred reference pitch has changed over the centuries, and it is interesting to follow the progression and philosophy behind those changes; certainly nothing mandates that A=440 will remain the reference...
  7. rbbert

    New to the forum: high end music server with Roon Core and 3 x dedicated linear power supplies

    A 30 cent change in pitch, especially down (there is a reason this is called "flat", as opposed to "sharp"), disqualifies this from serious consideration for music lovers, IMHO. For some listeners, with only instrumental music, it might be only occasionally objectionable, but vocals will be...
  8. rbbert

    My feels about this forum

    What is "Mid-Fi" and what is "Hi-End"? Unless your speakers' radiation pattern is only horizontal, ceiling and floor are also reflecting surfaces
  9. rbbert

    Are Transports Obsolete?

    Ripping Bluray Audio and SACD's is still a multistep process using unusual hardware and/or software, requiring significantly more time and attention than ripping CD's or just playing the discs. Anyone can decide they don't care about the sound quality or the music available in those formats...
  10. rbbert

    Keith's Dream Amplifier Thread

    Actually I like the fact that you are seriously investigating amplifiers that many would consider too "low end" for your speakers. Since I don't think any of the responders own the Hailey 2.2's, their opinions mean even less than usual (since ultimately yours is the only one that matters). I...
  11. rbbert

    Keith's Dream Amplifier Thread

    The KT77 is a different breed of tube, and although I have not done any personal testing there does seem to be a prevailing opinion that it is Gold Lion’s best effort, at least by the yardstick of how it compares to NOS KT-77’s.
  12. rbbert

    Keith's Dream Amplifier Thread

    True, it's hard to imagine the Gold Lions really being close sonically to any number of NOS 6922's (of which I have a few pairs)
  13. rbbert

    Keith's Dream Amplifier Thread

    While I suspect these will not quite be what you are looking for, I'll bet PS Audio will let you have them for a pretty extended home trial, giving you some time to check out several other candidates at the same time.
  14. rbbert

    Doctor's Orders-Part Two-The New Listening Room Of Steve Williams

    my experience with the dampers (similar to many other reports from users) is that improvement (or not) is dependent on too many factors to make a prediction without trying them. Tube type, specific tube (i.e., brand and type), mounting, circuit used, rectifier vs. output vs. input, etc all come...
  15. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    I certainly hope you (and they) are right
  16. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    Unfortunately, they are clearly speculating using imaginary data :confused:. As of today, you will not find any valid data on what constitutes a protective immune response; assuming that is identified soon (it probably will be), the next questions will be how protective it is, and how long it...
  17. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    As Steve pointed out, this is not a medical forum, and inappropriate and incorrect posts about a vaccine timeline display incredible ignorance. There have been links put up here which indicate that regardless of multiple vaccines beginning tests, no one has a good idea yet of what these...
  18. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    I don't think there is much doubt that (for whatever reason, and several have been proposed) the WHO "dropped the ball", and did not make public announcements about the severity of this illness in a timely fashion. The information was out there for others to (correctly) interpret, which S...
  19. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    Which is bad for the country more than bad for him personally. I think he would just as soon go back to his research lab and get out of the spotlight.
  20. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    Just remember: disposable is for use by health care workers. For other personal uses, save and re-use (not disposable gloves, however, those should be tossed)
  21. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    An argument which is reasonable on its face, but doesn't offer practical alternatives. Kind of like armchair quarterbacking, unfortunately. Counterpoint? The models could have been better with better input, but thanks to this country's unpreparedness (as compared to, say, S. Korea) that...
  22. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    Around here, several small businesses have been making cloth masks per the CDC recommendations. It's worth noting that cloth masks were surgical masks through the 1960's at least.
  23. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    I think this is non-technical enough for readers here to understand, although there is some medical terminology https://www.idsociety.org/practice-guideline/covid-19-guideline-treatment-and-management/ Don't skip the "Discussion" section
  24. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    Go ahead and read Dr. Frieden's interview; he alludes to this (one of the still unknowns) and of course this information is essential for a vaccine to be developed
  25. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    Perhaps Apple could "repurpose" casinos to make iPhones and HDTV's? ;)
  26. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    Even though there may be a "liberal bias" (whatever that means) at CNN, Dr. Gupta's interview with Dr. Frieden still provides very useful current information on where we stand on virus and pandemic knowledge https://www.cnn.com/2020/04/09/health/coronavirus-important-questions-analysis/index.html
  27. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    None of these links say what you say they do, which has been the main reason I am continuing to harp on this. Read them again, then reconsider your posts. I don't know what kind of filter you put on your consciousness to draw the conclusions you do, but they aren't the conclusions to which...
  28. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    Actually, for critically ill COVID patients ferritin (normally a good marker for inflammation and cytokine storm) does not seem to be reliable, often is low even as the patient is dying. But really, discussing this degree of detail in an audiophile forum is inappropriate.
  29. rbbert

    This Corona Virus Mania is Just Too Much, We All Need to Chill!

    I missed the ATS recommendation, although perhaps it is the exception that supports the generalization. As far as practicing physicians being experts, I can assure you that most or all currently treating COVID patients in the ICU are not and would not claim to be experts; at this point they are...

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