1) Delivers high performance and versatile full range bass for your AV audio device equipment; Accurately transfer high bandwidth frequency quality detailed clean natural pure audio sound / realism and clarity jitter-free in audio signals2) A beveled step-down design of the 3.5 mm connector accommodates most mobile devices in a case with a snug and secure connection; Built with heavy duty thick shielding high-quality polished connectors and corrosion-resistant 3.5 mm connectors; protection against radio frequency interference (RFI) and electromagnetic interference (EMI) 3) Connects portable audio device iPhone iPod iPad MP3 Music player Android smartphone tablet or laptop with the common 3.5 mm audio port to a TV AV receiver amplifier projector radio car audio stereo system Hi Fi audio computer sound recording equipment speaker and more4) Oxygen Free Copper Lines combined with a double shielding allow for a maximum audio quality; reduce distortion and signal loss; minimizes return loss so music dialogue and sound effects are always clear dramatic detailed in excellent signal quality5) Balanced solid conductors for enhanced internal noise rejection and clearer deeper bass and eliminate strand-interaction distortion; Solid-core bass conductor optimizes low-frequency signal transfer for improved bass response