Koss Pro3AAsearch

Koss Pro3AA

Koss Pro3AA

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Foldable, Closed-Back Design

Since creating the world’s first SP3 stereophone in 1958, Koss has set the standard for headphones that replicate the excitement of a live performance—and bring listeners closer to the music they love. The Pro3AA builds on that tradition with a lightweight, comfortable, supremely portable design. Great for use in the studio or any work environment where minimal sound leakage is important, these closed-back cans feature padded leatherette cushions that form a tight seal around the ears to reduce ambient noise. The construction is rugged, the headband is adjustable, and the ear cups fold up for easy storage.

Koss Pro3AA
Koss Pro3AA
Koss Pro3AA
Koss Pro3AA
Koss Pro3AA

Accurate Sound

The titanium-coated element minimizes mechanical distortion to ensure accurate sound reproduction, while voice coils improve signal transmission and conduction for cleaner, clearer sound. For flexibility of movement, the heavy-duty straight cable measure 8 feet long and ends in a gold-plated 3.5-millimeter plug. A 6.3-millimeter adapter is included.

Koss Pro3AA


  • Koss
  • Closed-back design
  • Foldable ear cups
  • Leatherette ear cushions
  • Frequency response: 15 Hz – 20 kHz
  • Impedance: 60 ohm
  • Sensitivity: 100 dB SPL / 1 mW
  • 8 ft (2.4 m) single-entry straight cable
  • Gold-plated ⅛ in (3.5 mm) plug


  • ¼ in (6.3 mm) adapter
  • Limited lifetime warranty


All orders will be shipped by Massdrop.

Estimated ship date is Aug 23, 2016 PT.

After the drop ends, payment will be collected and the group’s order will be submitted to the vendor up front, making all sales final. Check the discussion page for updates on your order.