the only dedicated cable I know of is the silver audio silver breeze. It costs around $500 for this cable so its not cheap, and discounts are not easily found as silver audio doesn't give hardly any margin to dealers. Other cables to consider are the Wasatch phone cable for $130 which I use in both din and RCA terminations, or Coincident. When it comes to the differences between a normal rca cable versus one for cartridge phono, silver audio has this to say:
Modern phono cartridges are the most exquisitely sensitive of all audio components and therefore require nothing less than the highest quality phono cable to preserve and convey the microvolt information they generate.
Designed to be the most accurate phono lead in the world, the signal network of the acclaimed 1999 Silver Breeze uses the same high performance geometry of the Appassionata but with a necessarily different conductor compliment. An air-gapped PE shield spacer greatly reduces field interactions between the shield and inner core while allowing the cable to be strong, lightweight and reasonably flexible.
Much of the noise that plagues high gain phono equipment is actually a result of stray electromagnetic fields (such as from the turntable motor) against which the typical coaxial shield is powerless. For this reason, the Silver Breeze uses a proprietary shielding method to shunt Electro-magnetic field interference (EMI) as well capacitively coupled noise i.e. RFI and ESI. This is a crucial feature of the Silver Breeze, which allows superb preservation of low-level information. For final insurance of sonic purity and lowest possible noise floor, the shielding system is floated at both ends and shunted to chassis ground separately rather than by shorting to the negative returns of the phono pre-amplifier. This allows the flexibility of choosing the optimal ground potential for the cartridge and shield drain.
The aptly named Silver Breeze is typified by agile transients, tune-full, consonant bass and natural illumination deep into the soundstage. The Silver Breeze is generally made to order due to the variety of special considerations regarding clearance and terminations. Normal termination is straight 5 pin Gold plated Cardas DIN to Topline WBT RCA. Available RCA to RCA for an additional $75.00 fee and right angle DIN for $30.00 additional.