Is a captured good tonearm cable better than a high quality one DIN connection?

Tomic, that is exactly what I would do; right to the circuit board at the four points where the wires that were soldered to the backs of the RCA phono input jacks were soldered to the circuit board.

Think about it, a .2 mv signal would then not have to go through: solder joint connecting tonearm wire to male RCA plug, RCA plug, female RCA phono input jack on preamp, solder joint connecting input jack to preamp internal wire and finally, internal wire to circuit board. How could doing this NOT make a positive difference. It does.

Obviously, I am not recommending this; but it is possible to do to good effect. Boy, those were the days! I think.

In my younger more fanatical days, when I was borderline addicted to the odor of burning solder flux 😜, I did all that teo_audio described.....three different times with three different tone arm wires. Totally worth it! However, a PITA. In fairness, not nearly as difficult to do with an ET2 than with pivoting arms. I know audiophiles are often accused of using hyperbole, but the sonic improvements gained by the elimination of multiple solder joints, plugs and dissimilar cables in the signal path were not only very significant, but also different in nature compared to improvements gained by actual upgrades of gear. The purity of sound one gains by smoothing out the “bumps is the road” caused by cabling (not just in tone arms) is wonderful. At one point I had my system ENTIRELY hard wired with not a single plug or jack in sight except at the ends of power cables. I ruined a phono cartridge doing this and will never do THAT again; those days are over.