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Koss PRO-4AA
Rs.12,314.00

Audio Technica ATH-E40
Rs.11,800.00
Brand
Koss
Audio Technica
Model No
PRO-4AA
ATH-E40
Wired / Wireless
Wired Headphone Specification
Wired Headphone Specification
Headphone Type
Over Ear
In Ear
 
Magnet Type
Neodymium
Dynamic
Driver Diameter
NA
8.5 mm
Impedance
250 Ohms
12 ohm
Sensitivity
95 dB/mW
107 dB/mW
Frequency Response
10 Hz - 25000 Hz
20Hz - 20KHz
Maximum Power Input
NA
2 mW
Noise Cancelling
NA
Sound Isolation
 
Available Colors
Yellow
Black
Connector Plating
3.5 mm Gold Plated Jack
3.5 mm Gold-Plated Stereo Mini-Plug, L-Shaped
Cable
2.5 m
Tangle Free Cable
Weight
NA
10 GM
Other Features
- Noise isolating professional studio headphones
- The first dynamic headphones to deliver true full frequency, high fidelity performance
- Standard-setting design incorporates performance-enhancing technology
- Superior isolation, accurate sound reproduction and the excitement of a live performance with every recording
- Durable steel and generously padded rubber headband
- Adjustable slide bars ensure snug fit
- 8 foot coiled cord with 6.3 mm (1/4") plug
- Covered under the Koss Stereo phones Limited Lifetime Warranty
3-Year Warranty from Audio-Technica that covers manufacturing defects.
The proprietary dual phase push-pull driver design of the ATH-E40 professional in-ear monitor headphones provides improved fidelity and efficiency.
These headphones deliver powerful bass along with balanced mid and high frequencies to convey the full emotion of the music from the stage to the street.
The headphones also come with a detachable 1.6 m (5.2') cable, with newly developed A2DC (Audio Designed Detachable Coaxial) connectors at the headphones and a 3.5 mm (1/8") stereo mini-plug output, and a carrying case.
The ATH-E40 features specially designed housings that provide incredible isolation. The isolation – and the comfort – are enhanced by the four sizes of included silicone eartips (XS/S/M/L), which allow you to create a custom fit.

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Key Differences

The frequency response differs (10 Hz - 25000 Hz vs 20Hz - 20KHz), which can influence how well the headphones reproduce lows, mids, and highs. Koss PRO-4AA and Audio Technica ATH-E40 offer different noise cancellation capabilities (NA vs Sound Isolation), which can impact how effectively they block external noise. From a usability standpoint, both models provide a reliable and premium headphone experience. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. Impedance levels vary (250 Ohms vs 12 ohm), which can affect compatibility and audio output when used with different devices. The driver size differs between the two (NA vs 8.5 mm), which can influence sound depth, bass response, and overall audio clarity. Koss PRO-4AA and Audio Technica ATH-E40 are premium wireless headphones designed to deliver high-quality sound along with advanced features like noise cancellation and long battery life. There is a noticeable difference in weight (NA vs 10 GM), which may affect comfort during extended use.

Verdict: Choosing between Koss PRO-4AA and Audio Technica ATH-E40 depends on whether you value better sound, longer battery life, or enhanced features.

Top Differences

  • Noise Cancelling: NA vs Sound Isolation
  • Driver Size: NA vs 8.5 mm
  • Weight: NA vs 10 GM
  • Impedance: 250 Ohms vs 12 ohm