Monster Rock - 21&rsquo; Instrument Cable &ndash; Straight to Straight &frac14;&rdquo; plugs 95% coverage copper braided shield rejects RFI and EMI for a lower noise floor and increased resolution. IsoTec vibration isolation technology further reduces handling noise. Extra-flexible Duraflex outer jacket for superior reliability and cut resistance. 24k  inch gold contact connectors with collar strain relief are durable and corrosion resistant. Two Way Time Correct windings phase align signal for natural reproduction of midrange frequencies. MicroFiber inner dielectric provides better isolation of magnetic fields for improved harmonic detail.