tonearm cable, do you need one?


I recently got a VPI classic 3.  It has regular RCA outputs.  All the arms I've used have always had built in wire with a ground on the end that hooks to the ground on the phono preamp.  The VPI has a ground lug and I see RCA tonearm cables have grounds on both ends.  How important is this?  Do I need a tonearm specific cable?  
128x128ejlif
Low capacitance, screened, relative flexible and not too heavy.
For ground you can use any piece of wire made from good copper.
You may benefit by using the same kind of wire, silver or copper, that is in the arm tube.

G


@petg60 he’s asking about RCA to RCA type, his TT has RCA output with ground pin.
Thanks chakster, i know, but i suspect that same would apply for rca to rca. Relative flexible and not too heavy would  have less stored energy and be easier to route. 

G
I use a VPI phono cable with my Classic 1 which is an extension of what the arm is wired with good system synergy.
I did end up getting a couple phono cables.  The VPI phono cable and also an Audio Envy phono cable.  I like the Audio Envy better all around. The VPI is a little thinner and brighter, it's close but I'm keeping the audio envy.  I don't notice anything different with or without the ground attached so maybe you can just use an interconnect and don't need the specialized phono cable.