How important is the cable between the SUT and phono pre?


I know when using a cable between a MM cartridge and the phono pre it's very important to take into account the capacitance of the cable for cartridge loading.

I don't recall seeing a discussion on the importance of using low capacitance cables between a SUT and  phono pre.  

I picked up a Denon Au-340 to replace my Denon AU-320 in my system and the AU-320 has built in cables that run to the phono pre, hence my question.

Is there a way to figure out the capacitance requirement for this cable or is it not that important? Will a good shielded cable work fine?

I don't want suggestions on some high dollar cables, that will never happen. I have about 15 or 20 pairs of cables that I picked up over the years, I can always go through the pile and measure the capacitance if necessary.

Thanks

 

BillWojo

billwojo

@billwojo , The single most important factor is to keep the cable as short as possible. I would use a high bandwidth balanced cable like Canare Da206. 

I use Sowter transformers which I mounted inside the phono stage with a switch to go back and forth between MM and MC. Doing this depends on how much real estate is available inside the phono stage. The transformers are very small. 

https://www.sowter.co.uk/acatalog/E_A_Sowter_Ltd_PHONO_CARTRIDGE_TRANSFORMERS_30.html

Agree with @mijostyn keeping your run out of the SUT super short (0.5m or less) is probably what you should focus on in most cases. 

@jpjones3318 No I don't have a cite for that part. I've seen it mentioned a couple times on forums, but forget where / who. I took that, combined with the info on the Hagerman page (which was fascinating to me), and my own SUT + cable listening tests (more capacitance, longer runs after SUT == BAD) and ran with it haha. 

Try use max 0.5m length.

im using Belden 8402 and easy to find on eBay .

better than kimber tak phono .

Enjoy 

To minimize capacitance, in addition to other measures, experiment with unshielded cable.  In some home environments, you can get away with it.

Dear @billwojo  : You need not only the short cable you can use but the best you own.

 

Now, I  still own the 340 and is a good SUT if and only if you make some changes on it: first are the input cheap RCA connectors for a decent ones, second that that short and high quality output IC cable be hard wired directly to the inside 340 board and third that all those internal input wires/cables connected to the 340 board and to the input connectors be changed by better quality wires.

 

Regards and enjoy the MUSIC NOT DISTORTIONS,

R.

 

Those changes makes/converts a good SUT in an excellent one that competes with any today top SUT.

 

Regards and enjoy the MUSIC NOT DISTORTIONS,

R.