Grado PS500 series headphones in immaculate condition with case and both audio jacks included. Design: Open-back, on-ear with aluminum housing and mahogany inner sleeve. Audio: 14Hz – 29kHz frequency response, 32 Ohms impedance, and 99.8 dB sensitivity. Compatibility: Low impedance (32 Ohm) allows for easy driving by portable devices, though they benefit from amplification.
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