Koss Porta Pro, On-Ear Headphones: With Microphone, Priced to Clear, No Packaging (Porta Pro)

"Koss Porta Pro stereophones high quality sound sets a sound performance standard for portable listening. First introduced in 1984, this high quality portable stereophone set performance and comfort standards for personal listening worldwide.

Koss has preserved the original design and performance that made the Porta Pro a portable music icon. Designed for those with refined musical acuity, the Porta Pro continues to be the most requested headphone at koss.

The Porta Pro features dynamic elements that deliver exceptionally rich, deep bass and a remarkably wide frequency response to capture every nuance in your favorite movie or musical performance. The elements inside the headphones minimize mechanical distortion and ensure exceedingly accurate sound reproduction.

Oxygen free copper voice coils improve signal transmission and conduction for cleaner, clearer sound. Foam ear cushions provide an open, hear-through sound that lets you keep in touch with your surroundings and adjustable temporal pads keep the pressure off your ears. Whether you’re listening at home or on the go, the Porta Pro will bring the great sound and excitement of a live performance.

Specification Chart

PortaPro

Frequency Response 15-25,000 Hz

Impedance 60 ohms

Sensitivity 101 dB SPL