The signal produced by a turntable's cartridge is significantly weaker than that of other Hi-Fi sources like a CD player or streamer, making it particularly susceptible to interference and noise picked up along the cable run before it reaches a phono stage for amplification. This is why dedicated tonearm and turntable cables are built with more thorough shielding and often higher-quality conductor materials than a standard, general-purpose RCA cable.

Some turntables feature a captive cable permanently attached at the tonearm end, while others use a detachable connection - typically a 5-pin DIN connector at the turntable - allowing the cable to be upgraded independently. For turntables with a detachable connection, upgrading to a dedicated, well-shielded turntable cable is one of the more cost-effective ways to reduce noise and improve overall signal quality from your vinyl setup.

If your turntable supports a detachable cable, or you're setting up a new deck from scratch, a dedicated tonearm cable offers a genuinely worthwhile improvement over a standard interconnect for this particularly delicate connection.