Cables for Turntables

The signal from a turntable cartridge is extremely low, generally below 0.5 mV. This characteristic necessitates a specific cable designed to carry this delicate signal without degradation. Unlike standard interconnects, phono cables feature low-capacitance construction (typically below 80 pF per meter) and benefit from optimized shielding against electromagnetic interference.

The presence of the ground wire is the major distinguishing feature. This additional conductor connects to the GND (ground) terminal of the preamplifier or amplifier. Without this connection, a continuous hum would make listening impossible. The ground wire discharges unwanted electrical noise and stabilizes the transfer of the stereo analog audio signal.

RCA connectors equip the majority of current setups. Some older turntables use DIN outputs directly on the tonearm, requiring a mixed DIN/RCA cable. Connector quality directly influences transmission: gold plating, meticulous soldering, and enhanced insulation characterize high-performance models.

Cable length plays a decisive role. An overly long cable increases capacitance and multiplies the risk of parasitic inductances, especially if coiled. A cable that is too short creates mechanical stress on the connectors. The ideal distance is between 1 and 2 meters maximum, suited to the actual spacing between the turntable and the electronics.

OFC (Oxygen Free Copper) conductors ensure optimal transmission with minimal distortion. High-end models offer specific geometries that separate the positive and negative conductors, reducing magnetic interactions that color the sound.

The choice of a phono cable should maintain system coherence. An entry-level setup will not reveal the qualities of a highly sophisticated cable, while a high-performance turntable deserves a cable capable of reproducing the full nuances captured by the cartridge. The balance between the level of the hi-fi system and the quality of the cabling determines the final listening experience.