KOSS PRO 4AAA PLUSCIONAL HEADPHONES VINTAGE 1975 RARE WORK GOOD LOOK! The Koss Pro 4AAA Are High-Fidelity Studio Headphones That Were Popular in the 1970s and 1980s, Specially Among Audio Professionals. Here are their technical spectiflations: • Type: CLOSED-back, Headphones Circum • Frequency Response: 16 Hz - 22 kHz • Sensitivity: Approximately 95 dB SPL • Driver: Dynamic with Mylar Diaphragm They are know for their sturdy construction and action Sound, Although ESIR WEIGHT AND HIGH IMPEDANCE MAY REQUIRE POWERFUL APPLIFIER TO FULLY USE THES THES POTENTIAL. KOSS PRO4AAA Professional headphones for Pro4aaa Vintage 1975, guarantee of the life factory. Considered one of the best headphones in the world. A Vintage Original Koss Pro-4AAA Studio Quality Headphones. These Headphones with Little.
eBay