Products UP-4 tonearm
![UP-4 tonearm](http://tecsart.com/media/products/small/1459195539Mørch_up-4.jpg)
Model UP-4 incorporates a special concept of the unipivot principle.
The bearing consist of a hardened steel pivot resting in a concave,
polished sapphire. The bearing is damped in all directions with silicone
fluid. The low positioning of the bearing provides for a greater
stability compared to other unipivot arms, since a considerable part of
the moveable mass of the arm is positioned above the pivot point.
With the model UP-4 the azimuth adjustment is made by the way of the counterweights.
![](http://www.moerch.dk/img/morch_up4_snit.gif)
Vertical cross section of model UP-4 through pivot and sapphire.
Supplied in CHROME- or 24 carat GOLD finish and at speciel orders also in BLACK.
The armtube plating being made without the use of magnetic materials.