Audio-Technica ATH-M50x Professional Studio Monitor Headphones, Black

The wired model and what comes with it

The black ATH-M50x is a closed-back dynamic headphone with manufacturer-rated 45 mm drivers, 38 ohm impedance and 285 g weight without cable or connector. Its supplied short straight, long straight and coiled leads suit different working distances, and the pouch and screw-on adapter are included. The published 15 Hz to 28000 Hz span is a manufacturer specification, not evidence of a flat response across that range. The passive wired design needs no battery-runtime comparison. [3], [5]

Seal and measurement conditions change the story

DIY-Audio-Heaven's original tests show why fit should come before equalization: a broken seal changes bass extension, and different pads change tonal balance. Its plots use a good-seal, unsmoothed flatbed rig, so they are not a universal target for your ears. The review heard clear reproduction with elevated bass and upper treble. Headfonics also described recessed mids relative to bass and treble, but its older supplied sample has an unconfirmed color and contributes only model-family listening impressions. [5], [6]

The DIY test found bass distortion dominated by the third harmonic and increasing at higher test levels, while distortion above the bass was lower. Its reported second-harmonic behavior at higher frequencies was partly limited by the rig. The accompanying measurement entries retain the levels and approximate results. They describe the tested sample and setup, not production tolerances or recommended listening levels. For critical bass decisions, this evidence argues against assuming that the studio label guarantees level-independent neutrality. [5]

Try your actual glasses and session length

Comfort evidence is individual. Gear4music's reviewer liked the black model for long workdays with breaks, whereas DIY-Audio-Heaven found limited room inside the stock pads. Glasses and seal changes can also affect bass, even if the headband initially feels comfortable. A useful audition therefore includes your usual glasses, a familiar bass line and enough time to notice pressure or heat. Pad wear deserves attention because replacing the pads can change both fit and sound. [5], [4]

Match the cable at both ends

The source end uses a stereo headphone plug, but the left earcup uses a smaller twist-lock connector. A generic cable with the right source plug is therefore not automatically compatible with the headphone. Use the short straight lead for a nearby source, and the long straight or coiled lead when more reach is needed; the screw-on adapter fits the two longer leads. A phone without an analog headphone output needs a suitable adapter. No individual phone adapter was verified here. [3], [5], [6]

Tracking, mixing and travel have different needs

Recording Magazine found the closed enclosure useful for vocal tracking and the swiveling cups convenient for one-ear monitoring. That does not establish strong environmental noise reduction: Gear4music still heard office conversation, ventilation and keyboard noise, and noticed more leakage at higher volume. The headphone has no ANC. These reviews used different contexts and are not directly comparable. Choose it for monitoring with a microphone nearby if the fit works; look elsewhere when suppressing travel or office noise is the main requirement. [3], [1], [4]

For mixing, the actionable limitation is learning the bass balance rather than simply adding more low end. Gear4music's reviewer was happy to track and mix with it, but cautioned against overcorrecting sub-bass and preferred another setup for mastering. Together with the seal and distortion evidence, that makes the M50x a conditional critical-work choice. An enjoyable or useful tracking sound does not by itself establish a neutral mastering reference. [5], [1], [4]

Replaceable parts help, but pads are acoustic parts

Audio-Technica's HP-EP replacement instructions explicitly cover ATH-M50x and recommend replacing both pads together. The separate foam-transfer instruction belongs to M40x, not this model. Use model-compatible replacements and check the fit after installation. DIY-Audio-Heaven's pad experiments show that a different material or shape can alter tonal balance; its compression experiment only approximates aging. Current local parts stock, a support-end date and a guaranteed service lifespan were not established. [5], [2]