Hi AJ
Thanks for the post. Yes unfortunately I did not get to test those speakers under Ideal conditions. Under your advisement this week I will take one of my fav dance cds to the Hi-fi store and listen to the Kefs. My mates friend who's got the speakers has agreed for me to a run my amp Onkyo tx-sr705 with the vishorns. I will then be able to see how it could sound and will use the same cd. A small bonus is his cinema room is like the hi-fi demo room with carpeted walls.
No worries

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In lieu of not being able to compare them side by side in the same room (namely yours), the best you can do is use the same material and do your best to keep the volume relatively the same.
It is established psycho-acoustic knowledge that louder volume will be perceived as "better", rather than "louder". It's also established that visual impact plays a significant role in what we "hear"....but I digress

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I was hoping that someone might have heard of them or may know the price. I would hate to pay more than new price for them.
Still if in the end they remain a mystery and sound better than the kefs and some others I will try, I will just pay the guy and enjoy.
Unfortunately, they appear to be a Chinese brand not widely distributed here (if at all?). Not sure what the price is/was, perhaps the seller could divulge where he bought it from for some confirmation? I would say the more important question is the value. For $10k (yes, I realize that includes an amp), you're in the upper stratosphere of loudspeakers. I would strongly suggest shopping around quite a bit before dropping that kind of $$. However, we all normally listen sighted and since it's you who must determine "value" and your ears that must be pleased, if the Vishorns remain at the top after shopping around...buy it. Maybe barter on the price a bit

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Be aware that not being a "name" brand might affect
you if/when you try to resell it later on.
Oh any idea on what the -3db and a 0db switch is for?
It's a shelving filter to reduce output in a certain frequency range, most likely the upper treble. A rather crude solution in most cases, especially when newer top receivers feature much superior parametric equalization, which is infinitely more flexible and adjustable.
Btw, is your local KEF dealer
Eastwood Hifi? If so, I'd definitely give a listen to some of the <$10k speakers (including KEF's) in comparison as well.
The more, the merrier

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cheers,
AJ
p.s. what size/decor is your room and where can the speakers be placed (safely, as not to raise the ire of the Mrs) within it, relative to where you sit? Do you already have subs?