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Type: Posts; User: atmasphere

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  1. Replies
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    Re: Rolled off top end...

    Smoothness is the result of low distortion at high frequencies.

    A rolled off high end is the result of less bandwidth.
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    RIP Roger Modjseky

    Roger passed away earlier this morning of cancer. His no-nonsense approach to audio will be missed.
  3. Re: Best preamps ? Manley Steelhead or Atmasphere MP 1 ?

    If I can straighten something out: The RIAA curve is based on the 'RCA Orthophonic' equalization. By the time the first mono LPs appeared, many of them were on this curve, so it predates the stereo...
  4. Re: Is tube "compression" a thing when pushing tube amps?

    What we are talking about here is how graceful the amplifier overloads. The more graceful, the more it will simply seem to be compressing the sound. But push it a little bit harder and the distortion...
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    Re: What happened to tone controls?

    The problem with your prior assertion is it assumes that all MQA recordings are derived from recordings where aliasing is a problem. On this account it renders the statement false. It was easy to...
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    Re: What happened to tone controls?

    Its probably not germaine to this conversation to explain why MQA is irrelevent (not a fan BTW) other than to point out that this statement is false.
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    Re: What happened to tone controls?

    Although the digital industry does not like to admit this, aliasing is a form of distortion and is highly audible to the human ear, which converts any distortion into tonality- in this case...
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    Re: What happened to tone controls?

    Yes. Use the Deoxit spray in the green and black can. This will leave a lubricant deposit which will prevent damage to the switch, which has a lubricant installed. The latter may get ejected from the...
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    Re: What happened to tone controls?

    Your graph above makes my point.

    The ear doesn't do well with minor FR errors, but when the error covers a spectrum it can detect it pretty easily. Like my comments about the effects of tone...
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    Re: What happened to tone controls?

    No conjecture- I've measured plenty of preamps and amps with tone controls and this sort of thing is common. A 'good' design is one that uses rotary switches as seen in the Citation 1 preamp; that...
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    Re: What happened to tone controls?

    Tone controls went the way for the simple reason of improved neutrality/transparency.

    There were some preamps that had pretty good controls- the H/K Citation 1 being a good example: when you set...
  12. Re: Tubed Power Amplifiers. Are the disadvantages too great ?

    That the ear has this property has been understood for a decades. But I think the significance of it is not well understood.
  13. Re: Tubed Power Amplifiers. Are the disadvantages too great ?

    The distortion issue is a bit more complex than it appears on its face.

    The ear's masking principle appears to play a role too. The ear also converts distortion into tonality. This is why the 2nd...
  14. Re: Tubed Power Amplifiers. Are the disadvantages too great ?

    The hum is probably due to poor grounding schemes in the prior designs. That sort of thing is very common in high end audio. We have direct-coupled inputs. Occasionally we also run into hum issues-...
  15. Re: Tubed Power Amplifiers. Are the disadvantages too great ?

    I'm not sure I would agree. The problem isn't that the engineering talent to make a musical solid state amp does not exist. There are some pretty good examples out there right now, but as far as the...
  16. Re: Tubed Power Amplifiers. Are the disadvantages too great ?

    If you don't mind me debunking this at this late point in the thread:
    Tubes do degrade, but if you stick to triodes the degradation is much slower.
    Yes, tubes make less power, but that really isn't...
  17. Re: Would you abandon your expensive cables if there was a much cheaper alternative?

    I did- many years ago. Starting In the early 1970s I noticed that you could hang Neumann microphones over the orchestra and the mic feed sounded amazing! A the time I there were no exotic...
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    Re: Itís all about the bass

    Peter Gabriel 'The Long Journey Home' Soundtrack to Rabbit Proof Fence, on LP (45 rpm)
    Infinity Project S/T LP
    Global Communication 'Remotion' LP

    We used to have the Atma-Sphere 'Bass of the...
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    Re: 20 most expensive amplifiers ....

    Huh.

    They missed one:
    http://www.atma-sphere.com/Products/#MA-3
    This amp is about 147,000 for the four chassis set. It takes us about 3 months to build a set (its handwired). I think its still...
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    Re: Audiophile fight

    What many people don't get is that the ear has one particular sensitivity that exceeds most test gear- and in this regard, the assumption often made is that test gear can detect stuff below the...
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    Re: Audiophile fight

    OK- so I did not interpret your use of the word 'opposite'.

    Uh, really don't know what you're talking about in this post- But if I got what you are getting at and if you want to know where my head...
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    Re: Audiophile fight

    If, by 'opposite' as appears in the quote above, you mean a product that measures poorly but sounds good, that phenomena has been documented by Stereophile on a number of occasions. Seems to me that...
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    Re: Audiophile fight

    A few years ago I got into it with Ethan, probably on What's Best. He maintained that power cords made no difference (on YT, also on that thread). I asked him if he had measurements to back up his...
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    Re: Just curious...

    jsautter on audiogon is from Iowa.
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    Re: Boulder amp with tube preamp

    It would also be prudent to see if the preamp supports the balanced standard. It'll sound better on that account alone.
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