Ever since it's introduction in 1984, the acclaimed Koss Porta Pro® has set performance and comfort standards for personal listening worldwide. Date, old to new
Same as KPH30i. Sound stage/Imaging: KSC75. KPH30i. Porta Pro. 3rd Place - decently wide horizontally but lacks in terms of verticality or the perceived height. Runner up - Matches the width and verticality of Porta Pros but lacks slightly in pin-point accuracy. Winner - Widest with good directionality and accuracy.
Overview. The acclaimed Koss Porta Pro has set performance and comfort standards for personal listening worldwide. Cord: Straight Dual entry 4ft. Distortion: < 0.2%. Impedance: 60 Ohms (at 1kHz) Plug: 3.5mm/6.4mm. Sensitivity: 101 dB SPL/1mW. Weight: 60g.
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koss porta pro release date
