Do 5-pole DIN tonearm connectors deteriorate the sound?

I am in the process of completely rewiring my new Woody tonearm (https://vtaf.com/woody-tm-universaltm-tonearms.html#/), sitting on a custom-made Lenco-recreation by Peter Reinders (http://www.ptpaudio.com/solid9.html). My new cartridge for this set-up is the Audio Technica ART 1000.The signal goes from the TT into my Supratek Grange phono-stage/preamp via a custom-made phono cable that is foil-shielded and also carries the TT grounding wire. Currently I have issues with hiss and a deep background hum, indicating bad shielding of the tonearm wires and some grounding issues. So, I decided to completely re-wire the Woody and the phono cable. The latter is currently soldered directly to the tonearm wires (34 AWG copper). I also have a ProJect 10 Carbon TT with a BenzMicro LPS cartridge. This TT has an internal 5-point DIN connector linking the tonearm wires to the phono cable.

Here is my question: has - in the experience of this esteemed forum - the 5-pole DIN connection a noticeable effect on the sound? After all, we are talking about very low voltages here, so - at least in theory - a direct connection from the phono cartridge to the preamp would be ideal. However, because of the small wire gauge (34 AWG 6N silver by Zavfino), I would probably run into resistance and capacitance issues for a 3 feet run. I would rather put the DIN plug in place to have a clean transition between the TT-wires and the phono wire, but I am not sure if this would lead to a sonic compromise. Of course, I could just try both configurations and try to hear a difference, but first, I am interested in the science behind this question, and second, I don't really have the time for trial-and-error.

Your input will be highly appreciated.