CAF 2016 Report

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  • wkhanna
    Grumpy Old Super Moderator Emeritus
    • Jan 2006
    • 5673

    CAF 2016 Report

    this is the first update in a series from our recent visit to Capital Audiofest 2016:

    well, i guess the biggest deal at this year's show was the North American premier of the Muon from KEF.
    placed in the VPI room, it was well supported equipment-wise via a pair of Odyssey mono-block amps from company owner Klaus Bunge.
    these 'wolf-in-sheep's-clothing' were not what they appeared, however, having been built to the same specification as Klaus' personal amps he uses at home.
    btw, Klaus is always willing to build any of his electronics to the customer's wants, needs, whim or requirements.
    additionally, VPI's (semi-) retired founder, Harry Weisfeld, supplied his latest creation, the magnetically driven Titon.
    sundry other equipment made up the rest of the signal chain, least of our personal liking being the Mac pre-amp.

    the system was BIG.
    BIG visually, BiG in sound, Big with Bling, V Big in hype and somewhat big in disappointment, at least by accounts from those in our group.
    do not get me wrong, this system was amazing.
    the aluminum shells are hydro-formed at the same factory in England where they make body parts for Rolls Royce, Aston Martin, Jaguar, etc.
    hand-welded then hand rubbed for many, many hours according to Mr Coorg (KEF's sales rep), whom i kept calling 'that damn Britt' all weekend (hey...he always answered me. And the both of us had a lovely chat at the bar Saturday evening).
    of significant grandness too, were Klaus’ Odyssey amps flaunting enough clean headroom & flat tonal response to easily equal the potential capability from the flagship KEF & VPI units.

    in all honesty, our ears detected a weak link somewhere in the chain.
    maybe the KEFs, maybe the MAC Pre (the MAC being our best guess).
    likely not the Triton.
    definitely not the Odysseys!

    while most voices were pure with exquisite focus, we notice some muddiness in lower mids, some wandering in images, & some lack of presence & detail at times that we were not willing to always blame on the recordings.

    for instance, when we played Lou Reed, 'Walk on the Wild Side' from the 'Transformer' LP, there is the iconic back-up singers laying down that infamous "Doot, Doot, Doot, Doooooh DaDoot". on a well-rung system they start with an echo/reverby, far away kind of characteristic positioned about 30 - 40 feet behind the speakers & you get a V real sense of motion as if they are actually walking directly towards you as their voices get clearer, gain energy & become tightly focused, & then end up about 5 feet behind your head as they serenade directly into your ears. With the Muon's that tactile, kinetic transition from far away to right in your face was missing. to me, using my own humble system as reference, it felt shallow, week, anchored by ball & chain, with little depth and less than stellar definition.

    while Harry did say they had tried multiple pre amps during Thursday’s set-up, he (they) settled on the MAC as giving the best performance & synergy. wish we could have compared this set-up with a few different pre amps.
    we speculate improvement was yet to be found in what was undeniably one of better systems one will ever hear in their lifetime.

    Johan Coorg, the KEF sales rep on the left, Harry Weisfeld, founder of VPI on the right

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    some of VPI's offerings...

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    the Rig

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    some of the VPI crew after hours playing 'Cards for Humanity' with Klaus Bunge in the hallway Friday night (libations abound)

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    my niece who lives in DC was able to join us Friday night

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    left to right: Dan (PewterTA), my niece and Matt Weisfeld (Harry's son and current head of VPI) having a friendly chat Friday night (late) over some basic principals & philosophies of audio......

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    Last edited by theSven; 29 May 2023, 02:10 Monday. Reason: Update image location
    _


    Bill

    Practicing Curmudgeon & Audio Snob
    ....just an "ON" switch, Please!

    FinleyAudio
  • wkhanna
    Grumpy Old Super Moderator Emeritus
    • Jan 2006
    • 5673

    #2
    Forum in the CAF 2016 series:

    Stereophile magazine's Art Dudley & Herb Reichert (right to left) sit for a chat with Gary Gill during one of the many seminars during the show. Gary is the creator, organizer & 'ringmaster' of the event. it all started years ago when he used to host a get-together at his house for the local DC DIY club.

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    This is one of Gary's personal DIY projects:

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    Harry & Matt gave a seminar on cartridge setup, plus took questions from the full room during the entire hour-long session.

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    During the seminar, they passed examples of some the VPR tone arms around:

    this is the all metal uni-pivot.....



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    and this is their new 3D-Printed arm....


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    one of my favorites in the lecture series was Scot Hull (aka 'the Part Time Audiophile') talking with Bill Conrad, co-founder of Conrad-Johnson. the insight & experiences in the industry he discussed were absolutely fascinating. Mr (Dr) Conrad actually started out with a doctorate degree in economics, & with a passion for audio as a hobby. He and & his then to become partner did not like the current offings on the market at the time, and decided to build their own equipment with the help of the public library. the rest, as they say, is history.


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    then Saturday evening we all had dinner with Klaus Bunge (owner of Odyssey Audio) & his crew.


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    Last edited by theSven; 29 May 2023, 02:15 Monday. Reason: Update image location
    _


    Bill

    Practicing Curmudgeon & Audio Snob
    ....just an "ON" switch, Please!

    FinleyAudio

    Comment

    • aud19
      Twin Moderator Emeritus
      • Aug 2003
      • 16706

      #3
      Those Kef's are shiny..... :drool:

      Shame about the weak link but it looks like you had fun regardless :T
      Jason

      Comment

      • wkhanna
        Grumpy Old Super Moderator Emeritus
        • Jan 2006
        • 5673

        #4
        Blogs in the CAF 2016 series:

        Bill Hutchins, LKV Research owner/desinger & Mike Bettinger from Luminous & VPI gave a seminar on Phono Preamp Design: Challenges and Solutions

        quoted from the event literature, "Phono preamp design is often cited as one of the most challenging tasks the audio designer faces. The phono stage must amplify the tiny signal from the cartridge as much as 10,000 times and must do so without causing excessive distortion or burying the music in noise. Experienced phono designers Mike Bettinger (Bettinger Deisgn, Luminous Audio and VPI Industries) and Bill Hutchins (LKV Research) will discuss their different approaches to these daunting tasks and explain how both of their contrasting methodologies both produce outstanding results."

        so just what are the differences in methodologies?
        simple, Mike uses feedback, Bill does not.
        what difference does that make?
        simple, feedback imparts distortion & robs power output, zero feedback does not.

        is a small amount of feedback distortion audible?
        well, like everything else, it just depends.
        and in the case of pre-apms, it depends on execution of the design.
        without using feedback, even small amounts of distortion from individual capacitors can be audible.
        this requires using precisely matched components in a zero feedback design.
        In Bill Hutchins' case, this means buying and measuring by hand hundreds or thousands of individual components (like capacitors, resistors, etc) just to get one that is judged worthy to have a home in his product.
        and, yes, this can get expensive in a hurry.


        Bill Hutchins talking Zero Feedback:


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        Mike Bettinger explaining how to reduce feedback distortion:

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        Proof of the pudding is Bill's LKV system.
        one of my V favorite of the show.
        i know, it does not look so grand or capable compared to all the bling being displayed everywhere else, but this system has soul.
        you sense it as soon as you sit down.
        and those demure little Joseph Audio Pulsar speakers?
        everyone who came into the room immediately asked were the sub was!
        this is a system i could live with V easily.
        perfect for a small to medium size room.


        VPI Prime Turntable
        LKV Veros One Phono Preamplifier
        LKV Line One Line Level Preamplifier
        Conrad Johnson Premiere 11 power amp
        Joseph Audio Pulsar loudspeaker

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        and the Focals sounded pretty good, especially in the upper range, with clean, realistic high frequency performance.


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        Brian Zolner, owner/designer of Bricasti, is introducing a few new items, some of which i promised not to divulge.
        regardless, his room is always a show stopper, few others i have ever heard can even begin to approach what this genius can do with digital!


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        Scot Hull (on the left) begging Brian Zolner for review samples, AGAIN!


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        Last edited by theSven; 29 May 2023, 02:20 Monday. Reason: Update image location
        _


        Bill

        Practicing Curmudgeon & Audio Snob
        ....just an "ON" switch, Please!

        FinleyAudio

        Comment

        • wkhanna
          Grumpy Old Super Moderator Emeritus
          • Jan 2006
          • 5673

          #5
          Groups in the CAF 2016 series:

          Tons of money in this room:

          VPI Industries Avenger "Magnetic Drive" three JMW 12” 3D printed arms
          Ortofon: MC Anna, MC A95, Cadenza Mono
          Dynamic Sounds Associates: Phono II
          Dynamic Sounds Associates Pre I
          Dynamic Sounds Associates Amp I mono block amplifiers
          Spendor SP-100R²
          Tweek Geek Bybee Stealth Power Purifier
          Luminous Audio: Mega Power Lynx, Synchestra Silver Reference, Synchestra Signature
          Kanso Audio Furniture: Hamoni; Heavy-duty amp stand

          And the sound?
          V good, but not great.
          the thing about audio shows is that the room will have a significant influence on the quality of the sound.
          and some folks know how to make a room work, and others do not.
          in some cases the room will never be tamed.
          other times, it is just the luck of the draw when it comes to how well a system will sound at a show.
          and occasionally, the ever elusive match of synergy between the chosen components just never materializes.


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          My niece liked the big horns.
          Good mids to my ear, V rolled off at both the upper & lower ends.



          Classic Audio Loudspeakers
          Atma-sphere
          Tri-Planar
          Purist Audio Design
          United Home Audio Reel to Reel Tape


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          Last edited by theSven; 29 May 2023, 02:25 Monday. Reason: Update image location
          _


          Bill

          Practicing Curmudgeon & Audio Snob
          ....just an "ON" switch, Please!

          FinleyAudio

          Comment

          • Evil Twin
            Super Senior Member
            • Nov 2004
            • 1532

            #6
            It looks like a lot of fun was had by all, but it reminds me of how insular my existence is... the last time I indulged myself in designing a phono preamp was about 1978... preferred professional open reel tape.

            But all those turntables and tubes and horn speakers, undoubtedly a lot of people were having fun, your niece included, but one might feel like a stranger in a strange land...

            Regarding that whole system, it "might" be the Mac Preamp, but I would put my money on checking out the speakers first as culprits... they look an awful lot like one Kef coincident coaxial driver, with a lot of mid woofer and sub woofer in big shiny cabinets. Nothing could go wrong there, of course, big expensive cabinets and a lot of expensive drivers....

            (in fact, the original Marten Coltrane Supreme at the Rocky Mountain AudioFest comes to mind...
            • Big expensive cabinets with expensive drivers... check.
            • Diamond midrange and tweeter drivers... check.
            • Hideously expensive electronics, including some glow bottles... check.
            • Analog source components.... check.
            • Coherent top to bottom sound with focused imaging and stage depth? nope, not at all.



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            Last edited by theSven; 29 May 2023, 02:25 Monday. Reason: Update image location
            DFAL
            Dark Force Acoustic Labs

            A wholly owned subsidiary of Palpatine Heavy Industries

            Comment

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