Sennheiser PX 100 Ultra Rare Foldable Headphones, New In Case NEW

THD, total harmonic distortion: 0.1 percent. Sound pressure level (SPL): 115 dB (SPL). Frequency response (headphones): 10 to 21,000 Hz. Weight (w/o cable): 60 g. Cable length: 1.4 m.

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