Audio Technica ATH-AD900X vs Beyerdynamic MMX 330 PRO – Which Headphones Are Better? (2026)

Open-air Headphones Deliver Clear, Natural Vocal and Instrumental Reproduction. The ATH-AD900x offers an immersive listening experience with clear, natural vocal and instrumental reproduction, a smooth tonal balance, precise imaging and superlative dynamic range. The headphones offer a uniquely comfortable fit thanks to their generously cushioned ear pads, lightweight honeycomb aluminum casing and exclusive 3D Wing Support Housing, which adjusts itself perfectly to each wearer. Designed to deliver extraordinary sound quality to satisfy the most discriminating listeners, the ATH-AD900x is ideal for music lovers who prefer the spacious quality of open-back headphones that combine involving sound with long-wearing comfort. The ATH-AD900x features large 53 mm drivers exclusively designed for the headphones, with rare-earth magnets and Audio-Technicaâ€™s copper-clad aluminum-wire voice coil technology for superior audio reproduction with an extremely wide 5Hz â€“ 35KHz frequency response.

Closed Design. Made in Germany. Soft over-ear pads for high wearing comfort. Professional studio sound with gaming tuning. Maximum comfort for extended gaming sessions. Earpads, headband and cable as replacement parts. Headband pad with a recess in the area of the fontanel. High-quality microphone for excellent intelligibility of speech. Single-sided, detachable cable with an integrated remote control. Unique speech intelligibility thanks to high-quality condenser microphone.

Key Differences

There is a noticeable difference in weight (265 GM vs 318 GM), which may affect comfort during extended use. Audio Technica ATH-AD900X and Beyerdynamic MMX 330 PRO are well-known options in the wireless headphone segment, offering a balance of audio quality, battery performance, and smart features. In general, both options are suitable for everyday use including music, calls, travel, and work-from-home scenarios. Both headphones offer solid battery performance, making them suitable for long listening sessions and travel. The frequency response differs (5Hz - 35KHz vs 5Hz - 40KHz), which can influence how well the headphones reproduce lows, mids, and highs. Impedance levels vary (38 ohm vs 48 ohm), which can affect compatibility and audio output when used with different devices. The driver size differs between the two (53 mm vs 45 mm), which can influence sound depth, bass response, and overall audio clarity. Both models support modern Bluetooth connectivity, ensuring stable wireless performance with compatible devices. Audio Technica ATH-AD900X and Beyerdynamic MMX 330 PRO offer different noise cancellation capabilities (Sound Isolation vs NA), which can impact how effectively they block external noise.

Verdict: Choosing between Audio Technica ATH-AD900X and Beyerdynamic MMX 330 PRO depends on whether you value better sound, longer battery life, or enhanced features.

Top Differences

Noise Cancelling: Sound Isolation vs NA
Driver Size: 53 mm vs 45 mm
Weight: 265 GM vs 318 GM
Impedance: 38 ohm vs 48 ohm

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Key Differences

Top Differences