Advise on Long Phono Cable run

I am using vintage Grado XTZ (MI) right now, it’s an old discontinued signature model. Very nice!

But another Induced Magnet (IM) type i can highly recommend is ADC TRX II , here is some basic info from the manual. Look at this Sapphire cantilever with Vital III (PH type LineContact diamond). It was designed by Nakatsuka-San (now ZYX) for ADC in the 80’s. Replacement stylus assembly screwed into cartridge for superb rigidity. Hight compliance.

Long time ago i bought ADC Astrion, also with Sapphire cantilever, i must say the ADC TRX is completely different design from different person, so the performance of the TRX II is much better than older Astrion.

Maybe you can purchase an mc phono preamp with an XLR output (Avid does some good ones), place it close to the turntable and you can run a longer XLR balanced cable to a "standard" line input on your amp.
This would be the least noise prone approach.

The Gold Note PH-10 has balanced outpout, i have this phono stage, but i don’t use balanced out. Anyway, you can put such phono stage near the turntable with standard 1.2m RCA unbalanced cable, but from the output of the phono stage you will get balanced XLR for a long run to your amp. It can be 5m easily. Good idea, but the cost of the phono stage ... 

Ditto on balanced XLR. Pro sound operators run them hundred of feet with no deregulation in the sound. 

“Pro sound operators” are dealing with line level signal voltages ( 1-2V). Here we are talking about 5-10mV at most, even from a high output cartridge. Different ball game.