Monster Acoustic - 21' Instrument Cable - Straight to Straight &frac14;&rdquo; plugs Multiple gauge high and low frequency wire networks for accurate, natural sound reproduction. Precision Time Correct windings for more accurate sound reproduction. 95% coverage copper-braided shield rejects RFI and EMI for a lower noise floor and increased resolution. MicroFiber dielectric on all conductors for faster transients and greater clarity. IsoTec vibration technology further reduces handling noise. Extra-flexible Duraflex outer jacket for superior reliability and cut resistance.