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FA ALPHA S22:
The Furutech FA Alpha S22 uses a shielded twisted-pair geometry. Each conductor is approximately 14 AWG (Alpha) OCC, insulated with a special grade of polypropylene. Around the pair are cotton damping material, a paper wrap, an inner PVC sheath with carbon damping particles, a braided shield and an outer PVC sheath. Overall diameter is about 9mm.
Furutech’s (Alpha) OCC is made from high-purity oxygen-free copper using a special casting process unique to Furutech. Unlike regular OFC, almost all impurities are removed at the micron level, and Furutech’s engineers count it among the few conductors that excel in sound reproduction.
- Conductors: 14 AWG stranded (Alpha) OCC, 2 cores twisted together
- Insulation: audio-grade PP (red/white)
- Filler: audio-grade damping cotton
- Barrier layer: paper tape wrap
- Shield: 0.12mm (Alpha) conductor wire braid
- Inner sheath: audio-grade flexible PVC (black) with damping carbon particles
- Outer sheath: audio-grade flexible PVC (purple blue), 1mm nominal
- Overall diameter: approx. 9mm
- Capacitance: 84.1 pF/m at 1kHz
- Impedance: 37.7 ohms at 10MHz
- Inductance: 1.55 µH/m at 1kHz
FA ALPHA S21:
Furutech’s FA Alpha S21 is slightly smaller than the S22, with 16 AWG (Alpha) OCC single-crystal copper conductors.
- Conductors: 16 AWG (Alpha) OCC, 30 strands x 0.18mm, 2 cores twisted together
- Insulation: audio-grade PP (red/white), 2.46mm diameter
- Filler: audio-grade damping cotton
- Barrier layer: paper tape wrap
- Shield: (Alpha) conductor wire braid
- Sheath: audio-grade flexible PVC (dark green), 1.0mm nominal
- Overall diameter: approx. 8.0mm
- Capacitance: 57.4 pF/m at 1kHz
- Impedance: 53.22 ohms at 10MHz
- Inductance: 2.0 µH/m at 1kHz
- Dielectric strength: AC 1000V, 1 min.
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