Sony PUA 7 to re-wire or not

If you look at the image of the standalone pua7 and the one mounted on the psx70 you will see they have a very different base @rauliruegas 

i think mine was lifted from a pax turntable

@lohanimal  : Yes, that's my idea too.

R.

Your arm is not the PUA-7 but a simplified cheaper version with different base and without proper armlift sony designed for their best models. I must admit the armlift mechanism on the original stand alone PUA-7 is one of the best ever (i own many tonearms but none of them have such precise armlift, this is very important to have precise armlift, especially for expensive cartridges with delicate cantilevers). There are many reasons why the arm removed from PS-X70 is 3 times cheaper than original Sony PUA-7 made for all turntables as the separate unit. The stand alove version is better, it’s rare and hard to find, expect to pay over $1k if you looking for a mint condition PUA-7, while the simplified version is very easy to find and not rare at all.

Knife-edge bearing must be avoided, some modern cartridge manufacturers do not recommend to use knife-edge bearings with their cartridges.

You can buy Cardas Litz tonearm wires for about $50 set. It’s absolutely crazy to pay 200-300 quids for 4 internal toneam wires. It’s a rip-off, especially for such a cheap version of Sony tonearm. Normally high quality vintage tonearms will impress listeners with stock internal wiring.

It is not necessary that you will prefer silver wire over copper wire, just because someone said silver is better.

How many people on here own the original stand alone PUA-7 tonearm ? I couldn’t find anyone who can comment on anything related to this particular model, except for the links to the vintageknob website.

My Sony PUA-7 is fine with stock internal toneam wiring. 

Simply in the interest of helping the OP who apparently is learning about tonearms and tonearm wire options, I would point out that no one has said silver is better. The AN wire is a fantastic wire; it simply happens to be silver. There are great copper wires. In my experience, the AN is an infinitely better wire than the Cardas, which happens to be copper. It is also an exceptionally flexible wire which can only benefit a tonearm with possibly not the greatest bearings. Worth the extra money? Personal call. I think a better question is will there be an audible improvement in sound? I would say, definitely; and if one considers what many spend two hundred bucks on with very questionable results.....

The issue when 2 arms are actually not the same
can also be found with the Micro Seiki MA-505.

When MS sold table models including this arm 
it was actually not the same arm when bought separately.

No guessing which one is superior.