Audio Technica ATH-M40x Headphones Audio-Technica

The Audio-Technica ATH-M40x are a highly regarded pair of professional monitor headphones that offer significant upgrades over the entry-level ATH-M20x, especially in terms of audio accuracy and essential studio features.

They are primarily designed for critical studio tracking and mixing, as well as DJ monitoring.

Key Features and Performance

• Tuned for Flat Response: Unlike the bass-enhanced M20x, the M40x is tuned for an incredibly accurate and flat frequency response across the entire range 15Hz - 24,000H. This is crucial for mixing and mastering, where neutrality is essential.

  Driver: Same 40mm drivers as the M20x, but with a different acoustic tuning to achieve the flat response.



• Impedance and Sensitivity: 35ohms impedance and 98dB sensitivity. They are easy to drive with a variety of sources.

• Max Input Power: Higher maximum input power of 1,600mW compared to the M20x's 700mW, allowing them to handle higher volume levels.

• Isolation: Closed-back, circumaural design contours around the ears for excellent sound isolation in loud environments.

Professional and Portable Design Upgrades

The ATH-M40x includes several features that make it a better professional tool and more portable than the M20x:

• Detachable Cable System: This is a major improvement. The ATH-M40x uses a proprietary locking mechanism and comes with two interchangeable cables:

  • A 3.0m (9.8 feet) straight cable.

  • A 1.2m (3.0 m) 3.9 feet coiled cable.

• Swiveling Earcups: The earcups swivel 90 for easy one-ear monitoring (great for DJs or checking a mix quickly.

• Collapsible Design: The headphones fold up for space-saving portability.

• Included Accessories: They come with a protective carrying pouch and a 6.3mm 1/4inch screw-on adapter.

The ATH-M40x is often considered the best value in the M-Series for users prioritizing a neutral sound signature for serious audio work, thanks to the combination of a flat-tuned response and practical features like the detachable/collapsible design.