Anyone listen to Zu Audio's Definition Mk3?

Phil,
Thanks for your reply,
My Coincident SET amp and speaker are fabulous together as would be expected with the same designer. I find your experience with the DEF MK IV. very interesting and I`m attracted to well implemented simplicity.In general simple designs sound better to me than the complex designed components.The crossoverless speaker should in theory sound pure and have natural tone. I`d really like to hear this speaker one day.The Frankenstein very easily drives my 3 way(2 xover speaker) it should be able to drive the even simpler DEF IV.

>Charles1dad - "In your case OTL seems to fit your desires, for Phil and myself SET is preferred"<

To this point, OTL has been my preference on appropriate speakers; however, in fairness, I have only tried one SET with the Zu's in my room. The Melody 300B SET mono's were definitely not an improvement even over a modest Marantz SS integrated, much less the Atma M60's. That being said, the most beguiling sound I've heard was in a dealer showroom with Proac Response speakers and Cary 805 SET. So, I suppose I'm holding out hope that the right SET can bring me even closer to the music?

>Agear - "By 'holy grail', I did not imply your quest for 3D tangibility was mystical or unrealistic"<

I think I know what you meant, though it's elusiveness for most of us certainly makes it seem "mystical" at times.

>Agear - "I too have made inept, stumbling attempts at system building while chasing various sonic attributes"<

I could not have described my own pursuits at times any better. It is this concern with "sonic dead-ends" that makes me cautious about wholesale changes. Within the last few months, I toyed with the idea of buying the Coincident Pure Reference Extreme. On paper, it seems to have much of what seems to work for me (easy to drive, full range, simple crossovers) with the potential for improved 3D soundstaging and the possibility of finding the "holy grail" with the right amp. Unfortunately, I had to stop the insanity and recognize all the things that I absolutely love about the Zu's. The potential for chasing a few possibly better sonic attributes while unknowingly (at first) giving up some of what I love from the Zu's is too big of a risk for me. Make sense?

>213Cobra - "Start with your Atmasphere and draw your own conclusions. It's a great combination to begin knowing your next move, if one is warranted"<

If I understand you correctly, you are saying to experiment with amps, presumably good SET's, and determine if this is the correct path for me? That is, indeed, what I am thinking of doing.

Phil, I've read much of what you have written on the Audion 845 Black Shadows in this and other threads. I've researched Sophia, Audion, Cary, and Mastersound 845 amps fairly thoroughly. From what I have read, I think the Audion may be closest to what I'm looking for, IF SET is what I'm looking for. Does that make sense? Are there any distributors in the US that would allow an in-home audition?

Germanboxers,
I understand your point,the Melody 300b SET could just be a mediocre SET amp. There`re so many 300b amplifiers available in the marketplace and at all levels,from sublime performance to poorly implemented.As expected transformer,power supply and parts quality can make or break a SET(or any amp for that matter). Gon member Morganc for example uses my amp with his Zu speaker and seems to love it(there`re certainly other upper quality SET choices), Phil makes a very strong case for high quality 845 based amps. It`s great to have viable choices. That 3-D magic you seek is certainly there with my Takatsuki-300b tubed Frankenstein/Coincident speaker(in abundance). I have no doubt that this is also very possible with your speakers.
Regards,

Germanboxers, your approach is wise. Keep what you have and take small steps. I have close to 15 years in the "high end" of the hobby, and an embarrassing percentage of that time has been spent going either backwards or sideways. And that is despite being rigorously "scientific" and disciplined in doing blinded listening sessions, "research," etc. The only reason I am where I am now (temporarily?) is dumb luck or grace depending on your perspective. What a goofball hobby.

All that aside, I was wondering about what you are "not" hearing currently vis–à–vis your sonic memory of that glorious sound? Is there a single variable that you are able to pin down? Do you think the Atmas are a tad too lean? Your source? Do cables make much of an impact in your system? Speaker positioning have much influence (as Phil suggested)?

For me, I have become more primitive or foundational in my approach. I am fixated on power and the room. I think dropping the noise floor in a system can improve dimensionality but cannot necessarily bring that fleshy palpability. I know for Gary, he was able to achieve those two things through cables and "conditioning" rather than adding another set of tubes. You guys should dialogue as you have owned similar gear and seem to have a similar sonic bias (hiphiphooray@earthlink.net).

Agear, couldn't agree more. My noise floor has really dropped using a standard industrial grade balanced power transformer, I now get that 'after midnight' sound ALL day long. I live/listen in a very dirty power area, surrounded by mobile booster stations/heavy industrial power useage etc.
Additionally the Black Hole bass attenuator has dramatically improved detail threshold in my room.
These two items esp. balanced power have done things NO component upgrade, no matter how expensive, could have acheived otherwise.
Power rules!