Audio Technica ATH-M40x - Flat-tuned studio monitoring

The ATH-M40x is a closed-back studio monitor headphone built for engineers and producers who need to hear the mix, not a flattering version of it. Flat-tuned 40 mm drivers keep the response honest from tracking to mixdown, while the circumaural cups seal out the room for long sessions. A dependable studio workhorse, available at Soundium.

Key Features

• Flat-tuned 40 mm drivers: Rare-earth magnets and CCAW voice coils for an even, uncoloured response.
• Closed-back isolation: Circumaural earcups cut external noise for tracking and noisy rooms.
• 90 degree swiveling earcups: One-ear monitoring for cueing and quick reference checks.
• Detachable cables: Coiled and straight cables swap to fit the desk or the booth.
• Collapsible build: Folds down to travel between studio and home.
• Pro-grade cushioning: Ear and headband padding tuned for multi-hour sessions.

Customer Benefits

Because the M40x is tuned flat rather than hyped, what you mix is what translates - to the car, the phone, and the club. The sealed cups keep clicks and bleed out of your tracking takes, and the swiveling design lets you drop one cup for cueing without losing your place. Light enough to wear all day, it stays comfortable long after brighter, heavier cans start to fatigue.

Quick Specs

• Type: Closed-back dynamic
• Driver diameter: 40 mm
• Frequency response: 15 Hz - 24,000 Hz
• Impedance: 35 Ω
• Sensitivity: 98 dB
• Maximum input power: 1,600 mW at 1 kHz
• Weight: 240 g (without cable)
• Magnet: Neodymium
• Voice coil: Copper-Clad Aluminum Wire (CCAW)

In the Box

• Audio Technica ATH-M40x headphones
• 1.2 m - 3.0 m coiled detachable cable
• 3.0 m straight detachable cable
• Protective carrying pouch
• 6.3 mm (1/4 in.) screw-on adapter

Ideal For

Tracking and overdubs, mixing at home, reference listening, and DJ cueing.

Pros and Cons

✅ Pros:

• Flat, honest tuning that translates across systems
• Strong passive isolation from sealed cups
• Detachable cables and folding design for portability
• Comfortable over multi-hour sessions

⚠️ Cons:

• Closed-back stage is more intimate than open-back monitors
• Non-balanced cables only

For accurate monitoring without the open-back price or the leak, the ATH-M40x is a reliable desk-to-bag companion. Find the Audio Technica ATH-M40x at Soundium.