PRO3AA Full Size Headphones


Key Features:

  • Increased element rigidity minimizes mechanical distortion and ensures accurate sound reproduction
  • Voice coils improve signal transmission and conduction for cleaner, clearer sound
  • Closed leatherette ear cushions form tight seal around ears to reduce ambient noise and enhance bass
  • Ear cups fold up for protective storage and portability
  • Heavy-duty, single-entry 8 foot straight cord affords ample flexibility of movement
  • Includes gold-flashed 3.5 mm (1/8-inch) plug and 6.3 mm (1/4-inch) adapter
  • Covered under the Koss Stereophones Limited Lifetime Warranty

Performance meets comfort with the Koss Pro3AA headphones. Like their older brother, the Pro4AA, these professional grade, noise isolating headphones were designed to meet the high standards of broadcast and recording experts. 

The ear-coddling leatherette cushions and lightweight design of these closed studio headphones keep listeners comfy during lengthy listening sessions, while their crisp treble, warm and natural mid-range and taut bass supply the great sound every listening experience aspires to achieve. 

When you plug in with the Koss Pro3AA full size headphones, expect to capture every note and revel in the exceedingly accurate sound reproduction, sound intensity and bass these professional headphones provide. With minimal mechanical distortion, outstanding isolation capabilities and superior signal transmission and conduction, you’ll always enjoy a cleaner, clearer sound that music professionals – and music lovers – can’t help but fall in love with.

  • Noise isolating
  • Wide frequency response (from 15-20,000 Hz)
  • Leatherette ear cushions isolate ambient noise
  • Durable, padded steel and rubber headband with adjustable slide bars
  • Lightweight design
  • Includes gold-flashed adapters
  • Koss Limited Lifetime Warranty



Frequency Response 15-20,000 Hz
Impedance 60 ohms
Sensitivity 100 db SPL/1mW
Cord Straight, Single Entry, 8ft

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