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Thread: Aries Cerat, Lampizator, Audio Research, Analysis Omega, Rockports

  1. #31
    [Industry Expert] Addicted to Best! Believe High Fidelity's Avatar
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    Ked! Glad you had the chance to finally make the trip to see Flyer. Those 242's are very nice
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  2. #32
    VIP/Donor [VIP/Donor] microstrip's Avatar
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    Quote Originally Posted by bonzo75 View Post
    We moved volumes. With the 242 we brought down volume by 8 steps (13 to 5). And we moved up and down with both dacs. The SQ benefits with 242 were no question. Even at the side. With the the Rockport, in one case we found that volume at 4 and 5 had huge differences, so we could not adjust exactly, as the Aries preamp jumps up by 2db from 4 to 5.
    Was there any kind of measurement of the signal amplitudes when you swapped tubes and equipment?
    Under construction around a pair of Wilson XLF's, DCS Vivaldi 2.0 stack and Audio Research REF40 ...

  3. #33
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    Quote Originally Posted by microstrip View Post
    Was there any kind of measurement of the signal amplitudes when you swapped tubes and equipment?
    Nope

  4. #34
    VIP/Donor [VIP/Donor] microstrip's Avatar
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    Quote Originally Posted by bonzo75 View Post
    Nope
    I now see a great problem in the tube swapping listening sessions - if you do not control levels you will be mainly listening to the effect of changing loudness.
    My systems are calibrated and in my listening I have found that sometimes a 1-2 dB difference is more than enough to reverse findings.
    Under construction around a pair of Wilson XLF's, DCS Vivaldi 2.0 stack and Audio Research REF40 ...

  5. #35
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    Quote Originally Posted by microstrip View Post
    I now see a great problem in the tube swapping listening sessions - if you do not control levels you will be mainly listening to the effect of changing loudness.
    My systems are calibrated and in my listening I have found that sometimes a 1-2 dB difference is more than enough to reverse findings.
    Micro, we did not keep a constant volume . We changed volumes while playing too. I know people like to audition both at a X db, I never do that. I already mentioned the example where with the 45s there was a difference at 4 or 5 of the volume control (which was a difference of 2db). All we can do is give our impressions, you are welcome to read and suggestion is obviously you try both, not buy one. As for the 242 vs the 45s, these experiences have been carried out in other systems as well. Nothing here is new.

  6. #36
    Quote Originally Posted by microstrip View Post
    I now see a great problem in the tube swapping listening sessions - if you do not control levels you will be mainly listening to the effect of changing loudness.
    My systems are calibrated and in my listening I have found that sometimes a 1-2 dB difference is more than enough to reverse findings.
    Not really...Lampi people are pretty adept at evaluating tube characteristics whether output or recti.
    Many prefer the PX4 to the PX25, desite the latter having much higher gain...others the opposite.

    Gain play for most is irrelevant as people assess at their comfort zone dB level and over looong periods of time.

  7. #37
    VIP/Donor [VIP/Donor] microstrip's Avatar
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    Quote Originally Posted by wisnon View Post
    (...) Gain play for most is irrelevant as people assess at their comfort zone dB level and over looong periods of time.
    Exactly. But IMHO in short sessions, unless you control gain you will always set levels to favor your preferred. YMMV on this subject!
    Under construction around a pair of Wilson XLF's, DCS Vivaldi 2.0 stack and Audio Research REF40 ...

  8. #38
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    Quote Originally Posted by microstrip View Post
    Exactly. But IMHO in short sessions, unless you control gain you will always set levels to favor your preferred. YMMV on this subject!
    Well, I disagree with your caveat, but I can't show you what I mean unless we listen together.

  9. #39
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    Quote Originally Posted by microstrip View Post
    Exactly. But IMHO in short sessions, unless you control gain you will always set levels to favor your preferred. YMMV on this subject!
    This was the root for my question. When I review gear I set the level to within 1db with pink noise and calibrated microphone into my Behringer DEQ 24/96. Otherwise you will subconsciously stack things in favor of the one that you want to sound better. This means making it a few db too high in level as a simple case. Since Michel let Ked control the testing it is not too surprising the outcome and the findings are suspect.

    Now, I don't know which DAC is better, having not heard the Kassandra... and I still don't have a good idea because of the way the demo was conducted.

  10. #40
    Quote Originally Posted by morricab View Post
    This was the root for my question. When I review gear I set the level to within 1db with pink noise and calibrated microphone into my Behringer DEQ 24/96. Otherwise you will subconsciously stack things in favor of the one that you want to sound better. This means making it a few db too high in level as a simple case. Since Michel let Ked control the testing it is not too surprising the outcome and the findings are suspect.

    Now, I don't know which DAC is better, having not heard the Kassandra... and I still don't have a good idea because of the way the demo was conducted.
    Hi morricab,

    I'm not sure that's a fair comment. I don't believe Bonzo nor Flyer's intention was to conduct a formal review. They simply got together to compare and contrast - perhaps it's best to think of it as an informal collection of impressions. At least, that's the way I read it.

    Best,

    853guy
    Martins, Edgar. Aluminium Honeycomb Assembly, M&C Laboratory, ESTEC/ESA. Taken from the "Rehearsal of Space" series (2014 - )

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