What Is an Audio Cable?
An audio cable carries sound signals from one device to another—phone to speaker, mixer to amplifier, or turntable to receiver. The cable you choose directly affects sound quality, noise levels, and compatibility.
Main Types of Audio Cables
3.5mm (AUX) cable. The most common connector for headphones, phones, and portable speakers. Available in TRS (stereo) and TRRS (with mic) versions.
RCA cable. Uses two or three color-coded plugs (red, white, yellow). Standard for home stereo, TVs, and turntables.
XLR cable. A balanced 3-pin connector used in professional audio. Delivers clean signal over long distances with minimal noise.
TRS/TS cable. Quarter-inch jacks found on guitars, keyboards, and studio monitors. TRS is balanced; TS is unbalanced.
Optical (TOSLINK) cable. Carries digital audio via light pulses, immune to electromagnetic interference.
How to Choose
- Match the connector to your devices
- Prefer shielded cables for longer runs
- Gold-plated contacts resist corrosion
- Balanced cables (XLR, TRS) for studio use
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