Tonearm wiring termination---DIN, or RCA jacks?

I don't know precisely how it is configured in each case inside the arm wand, but several tonearm builders provide a one piece solution (clips to male RCAs) as an option. I know my Schroeder does. There are bare wires in the wand and then the outer sheathing begins at the base of the arm pillar. If you have a Rega arm you can even buy a rewire kit that is direct from clips to RCAs as shown
here.

I agree with the 1-piece wire approach whereby a single high-quality tonearm wire extends from the cartridge clips to the RCA plugs going into the preamp (or SUT). Mesch asked if any commercial tonearms do this, and the answer is Definitely! Each of my arms came that way---Triplanar,Schick and Siggwan. Typically the fine-gauge tonearm wire goes into a sheath a few inches from the arm with perhaps a ground wire inside which adds bulk and mass and makes the delicate wire much more durable. I have never had any problems with the wiring in my arms.

Re-wiring a tonearm can also be a nice sonic upgrade. I recently replaced the Cardas wiring in my Siggwan with something called "1877 Phono" wire, and this made a nice improvement in sound. The RCA plugs at the preamp end of the wire are also important. The Siggwan came with KLE Copper Harmony plugs, but swapping them out for KLE Absolute Harmony plugs made almost as much difference as the wire itself.

Direct wired RCA is best for low level signals.

I agree with the direct wire approach from everyone above

But in the RCA arena - KLE Innovations Absolute Harmony RCA's are the best you can get - bar none!

I've owned the entire KLEI lineup - starting with his original Eichmann Silver Bullet and the Absolute Harmony are light years ahead.

Take a look at their web site for lots of reviews

Best Upgrade I ever made to my analogue rig!

Regards...

Ditto uninterrupted direct-wire. I've transitioned from the vetted Hovland Musicgroove to various DIY straight-wire designs-- most recently with KLEI silver RCAs-- and will never go back. Count the number of soldered and metal-on-metal contacts eliminated and it makes perfect sense for low-level signal.