We celebrate the 25th anniversary of the Koss Porta Pro with this special limited edition model. The Porta Pro features dynamic elements that deliver exceptionally rich, deep bass and a remarkably wide frequency response from 15-25,000 Hz to capture every nuance in your favorite movie or musical performance. Constructed from mylar, the elements are extremely rigid, minimizing mechanical distortion and ensuring exceedingly accurate sound reproduction. Neodymium iron boron rare earth magnet structures enable the Porta Pro to deliver greater volume so you can hear every note, even when competing against the sounds of a commuter train with a low-voltage MP3 or disc player. Oxygen free copper voice coils improve signal transmission and conduction for cleaner, clearer sound. Foam earcushions provide an open, hear-through sound that lets you keep in touch with your surroundings perfect to wear while running, at work, or while traveling. Whether you’re listening at home or on the go, the Porta Pro will bring the excitement of a live performance to any recording. Type Open Dynamic Frequency Range 15~25,000Hz Impedance 60ohms Sensitivity 101dB SPL/1mW Distortion <0.2% Cable Straight, Dual Entry, 4 feet Weight 100g 200g in retail box

Contents .. Koss PortaPro Headphones 25th Anniversary Stereomini to Stereo adapter plug Drawstring pouch We are Authorized Reseller. International Lifetime Warranty Liaise with your regional Koss. If unavailable, we can help you liaise with the Singapore distributor for a fee of SG$20. You will pay for postage to/from our Singapore office.