bouquet wrote:I used it in one straight line from cartridge to phono-amp without any screening , bewteen arm and phono-amp inside another PTFE sleeving.
Lower capacitance can be had without screening, but at least the signal and ground leads from each channel should be tightly twisted together, as soon as they get out of the arm.
Even then it may pick up (audible) noise, but depends of your environment.
Without a record playing, if you take the volume of your amp close to max. and you don't hear significant hum and/or strange noises (clicks, etc), it should be ok. A little hiss is normal.
Unshielded wire works for line level, which is not as sensitive, but for a TT I would not use it.
These days more and more gear is wireless, fluorescent lamps neaby should be avoided, and even mobile phones can put interference in sensitive audio signals. They work in a much higher frequency, but harmonics come all the way down to protrude with the audio signal, if unshielded cables are used for weak signals.
Anyway, for your cartridge, lower shunt impedance is better, down to 15K, base on 100pF total capacitance.
But in your context of such low cable capacitance, impedance can indeed be a little higher.