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Specification
Price
Rs.11,300.00
Rs.11,520.00
Brand
Koss
Beyerdynamic
Model No
PRO4AA
DT 252
Wired / Wireless
Wired Headphone Specification
Wired Headphone Specification
Headphone Type
Over Ear
Over Ear
Magnet Type
Dynamic
Neodymium
Driver Diameter
40 mm
NA
Impedance
250 Ohms
80 Ohms
Sensitivity
95dB SPL/1mW
100 dB/mW
Frequency Response
10Hz - 25KHz
10 Hz - 30000 Hz
Maximum Power Input
NA
100 mW
Noise Cancelling
Sound Isolation
NA
Available Colors
Gold
Black, Grey
Connector Plating
6.35 mm Jack
3.5 mm Gold Plated Jack
Cable
Coiled, Single Entry Cable
3 m
Weight
680 GM
170 g
Other Features
1970 : PRO4AA set the standard for full-size professional headphones.
Comfortable Over-Ear Fit : Large, cushioned ear cups surround your ears for a comfortable fit, helping you stay focused on the music through extended listening sessions.
Limited Lifetime Warranty : Every PRO4AA is backed by Koss’ Limited Lifetime Warranty, reflecting our commitment to the headphones we build and the listeners who wear them.
5mm - 6.3mm Compatibility : Connect to a wide range of audio equipment with the included 3.5mm plug and 6.3mm adapter, from portable sources to home stereo components.
Passive Noise Isolation : The PRO4AA over-ear design and cushioned ear cups help block outside distractions, keeping you focused on your music without electronic noise cancellation.
High-Fidelity Audio : Hear your music with an extended 10–25,000 Hz frequency response, delivering deep bass, detailed mids, and crisp high frequencies across a wide range of sound.
Iconic Design : One of the most recognizable headphones around the world, PRO4AA carries forward decades of headphone innovation with a distinctive over-ear design built for serious listening.
Professional 250-Ohm Impedance : Designed for serious listening, The PRO4AA features 250-ohm impedance for use with compatible home audio equipment, amplifiers, and professional audio gear.
- Closed headphone
- Good ambient noise attenuation
- Neodymium magnet system for perfect reproduction
- Soft, circumaural ear pads
- Single-sided plug-in type connecting cable
- Limiter (optional)
- DT 252 as single-sided version
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Top Differences

  • Noise Cancelling: NA vs Sound Isolation
  • Driver Size: NA vs 40 mm
  • Weight: 170 g vs 680 GM
  • Impedance: 80 Ohms Vs 250 Ohms
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