The Optimum is the fourth of IsoTek's high-performance network cables to be upgraded to the new EVO3 (Evolution 3) version. As a result, this is a product that incorporates substantial advances over its predecessor, the celebrated GII version, with the new conductor arrangement in particular standing out, which, in combination with carefully selected materials, has resulted in a power cable with superlative performance. At the heart of the new Optimum are three silver-plated OCC ("Ohno Continuous Cast") copper conductors, which exhibit considerably higher purity levels compared to conventional high-purity copper (OFC). The benefits for audio and video applications are outstanding electrical conductivity combined with improved flexibility, fatigue and corrosion resistance. In addition, each of the three conductors employed uses a new and innovative square configuration of 40 strands, which in turn also have a square cross-section. This unique design provides a larger contact surface between strands, further improving electrical conductivity. In addition, high quality insulation (Teflon FEP) for each conductor provides a very low dielectric constant over a wide frequency range. In addition, all three conductors are lightly twisted to maximise rejection of electromagnetic interference (EMI) and radio frequency interference (RFI), and are then surrounded by a cotton filler which, in addition to increasing internal resistance and reducing microphony, also has superb insulating properties. The EVO3 Optimum is completed by a very robust heat-resistant PVC outer sheath which gives it a high degree of flexibility and mechanical strength.
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