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RE: REVIEW: UNI-Protractor UNI-Protractor Tone Arms

You have given a fine explanation of the workings of this luxury product. Whether a $799 protractor is worth the cost over far less expensive ones that, with care, can accomplish the same goals is a decision each person can make for themselves.

However I take issue with a few of your propositions where you state:

"But that is not enough, there are also Design differences in tonearm Geometry. Not all are the same. Some Japanese ones are made for tracking the most demanding tracks (closer to spindle), more modern Arms do a good job with reissues and are more or less calculated for that. And can show some problems."

"Not all Arms have the same Geometry and the Owner can choose now to order a Plate with the original specs for his Arm and / or additional ones."

"Some Arms (EMT, some Japanes ones...) don‘t follow modern alignments, they have a own Geometry. For these is also an alignment available (Manufacturer). Or a ,personalized‘ Plate for that Arm with a new, modern calculation to reduce distortion across the whole record."

Rather, the geometry of any standard pivoted arm is uniquely determined by the distance from the record center to the arm's pivot point. It's as simple as that. Any competently designed arm should be capable of supporting a cartridge aligned to any of the reasonable alignment standards about which you have written so clearly. So the ability to be better aligned to play innermost grooves, for example, is an alignment issue; it is not an arm geometry issue.


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  Michael Percy Audio  

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