Frank Kuzma is releasing a new arm!

@dover, You have your tonearm geometry mixed up. The SAT arm is a stable balance arm. In other words it will always return to the same balance point after a period of oscillation. VTF changes with elevation. The 4 Point is a neutral balance arm. It will stay in whatever position you put it in. VTF stays constant regardless of position. Yes, the new arm is a heavier arm which means it is limited to cartridges that are on the stiff side. There are plenty of those. As it is very short, shorter than a Rega arm it's moment of inertia is low in spite of the mass which is more important than EF. It's major failure is it's price. Would I buy one? Certainly not for a Lyra Atlas. 

Let’s spare ourselves the obvious jokes about its cost. The elephant in the room is that this tonearm is an elephant. At 60g effective mass, not many if any cartridges will qualify, if you base tonearm matching upon the equation for resonant frequency or even bring it into the buying decision? And yet its mass will be ignored by the well healed cognoscenti, because it is so expensive. In the minds of many with big bucks, cost can overcome the constraints of the physical universe. Even Fremer, who mentioned this product, its cost and its effective mass, in his most recent newsletter, didn’t bat an eyelash over that last specification. We shall see how it is ultimately viewed.

Just read Mijostyn’s last post after having posted this. I don’t see how you can divorce effective mass from inertia.

Aesthetics are important for some. Me included. To me it looks like an Orca whale (fitting giving it’s mass) and I would not want it if it were free. My Reed 3P’s not only sound great but to my eyes are beautiful. Same with my decks. I want both performance and beauty. If an Edsel could outrun a Lambo, would you want to be caught dead in it?

I'm into aesthetics as well and think this arm on a Kuzma Stabi R in black would look awesome. Beauty is in the eyes of the beholder. 

@lewm , no, you can't entirely divorce inertia from mass but it does matter where the mass is. 

@fsonicsmith , stiffness of the arm tube is a very important characteristic for a tonearm and many of the best arms use wider diameter arm tubes. Certainly, the days of arms like the Infinity Black Widow are over. It does seem to me that if you are using a very stiff substance like sapphire you should be able to get away with a thinner lighter arm tube but there may be a problem manufacturing a smaller tapered sapphire tube. Frank Kuzma is no dummy. If he could have made it lighter he would have. He obviously had to compromise by making the arm a bit shorter. I think it is a good looking arm for what it is worth. Does it offer any advantages over arms like the regular 4 points or the Reed 2G, Schroder CB and Tri Planar? Set up correctly I would probably not be able to tell the difference and I would have to notice a difference to spend that kind of money. But, nobody has made a sapphire tonearm before so, this is another Kuzma first.