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Specification
Price
Rs.10,500.00
Rs.9,800.00
Brand
Sennheiser
Koss
Model No
HD 25-SP II
Pro4S Studio
Wired / Wireless
Wired Headphone Specification
Wired Headphone Specification
Headphone Type
On Ear
Over Ear
Magnet Type
Neodymium
Dynamic
Driver Diameter
NA
40 mm
Impedance
60 Ohms
35 Ohms
Sensitivity
114 dB/mW
99dB SPL
Frequency Response
30 Hz - 16000 Hz
10Hz - 25KHz
Maximum Power Input
200 mW
NA
Noise Cancelling
NA
Sound Isolation
Available Colors
Black
Black
Connector Plating
3.5 mm Gold Plated Jack
3.5 mm Jack
Cable
3 m
Detachable Coiled Cable
Weight
115 g
181 GM
Other Features
- Very lightweight and comfortable, even if used for long periods
- High maximum sound pressure level
- 65 Ohm nominal impedance for universal compatibility
- Tough, detachable OFC cable
- Neodymium ferrous magnet systems and lightweight aluminium/copper voice
Aluminum Construction : comfort and durability meet in this lightweight headphone.
Design Your Music with these professional, unbiased, fine-tuned Studio Headphones.
Koss SLX40 Dynamic Element precisely tuned to accurately convey the sound produced in the studio.
Contour Sealing Cushion : the unique D-profile closes gaps around the ear, improving comfort, fit, isolation, and sound.
Dual Choice Entry : choose either left of right cord entry and monitor through multiple headphones with a unique pass-through feature.
D-Profile Earcup : The D-profile mimics the shape of the ear, creating an ideal seal for the most consistent sound reproduction and incredibly natural fit.
Studio Sound :At the heart of the Pro4S are all-new Koss SLX40 dynamic elements, delivering an ultra-wide 10–25,000 Hz frequency response that captures every nuance of your music with remarkable clarity and balance. From the deepest, tightly controlled bass to articulate midrange vocals and extended highs.
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Top Differences

  • Noise Cancelling: NA vs Sound Isolation
  • Driver Size: NA vs 40 mm
  • Weight: 115 g vs 181 GM
  • Impedance: 60 Ohms Vs 35 Ohms
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