Evidence Audio is an American cable manufacturer based in Rancho Santa Margarita, California, founded by Tony Farinella. Farinella began researching cable design in 1992, spending six years in a sound room methodically comparing cable variables before launching Evidence Audio to serve the musical instrument and professional studio markets. The company's design philosophy centers on cables that "disappear" from the signal path, preserving the original character of the audio signal without adding coloration or distortion.

Evidence Audio's product line spans instrument, audio, microphone, speaker, and power cables across several tiers. The Melody serves as the entry point, followed by The Reveal, The Lyric HG, and the flagship Forte. The Siren is the company's speaker cable, while The Source is an AC power cable designed for studio and stage use. The brand is also widely known for its Monorail patch cable and proprietary SIS (Screw-In Solderless) plug system, which together have become a popular choice for professional pedalboard wiring. Evidence Audio cables are used by artists including David Gilmour, Noel Gallagher, Ed O'Brien, Guthrie Govan, Andy Timmons, Guy Pratt, and Steven Rothery.

Evidence Audio has 7 products cataloged on Equipboard, including Instrument Cables. Their gear is featured by 8 artists, with the strongest followings in Rock, Pop, and Blues. Notable users include David Gilmour, Ed O'Brien, and Steve Stevens.