Overview

The Audeze MM-520 is an open-back, planar magnetic headphone built for critical listening and mixing at home or on the road. Co-designed with 18-time Grammy-winning engineer Manny Marroquin, it pairs a 90mm Ultra-Thin Uniforce diaphragm with Audeze's Fluxor magnet array and Fazor phase management, plus the brand's SLAM acoustic technology for deep, well-defined bass that doesn't smear the midrange. Magnetically attached memory foam earpads make cleaning and pad swaps quick, and at 18 ohms the MM-520 is easy to drive from a laptop or audio interface, even though it still rewards a proper headphone amp.

Simcoe Audio Video Insight

An open-back design lets air pass through the earcups instead of sealing it in, which is why mixers reach for it over a closed-back headphone when they want a more natural, speaker-like sense of space. That same open design lets some sound escape and lets outside noise in, so it's built for a quiet room rather than a busy studio floor or a commute.

• 90mm planar driver with SLAM acoustic technology for tighter, deeper bass
• Magnetically attached memory foam earpads for fast cleaning and pad swaps
• 18-ohm impedance drives easily from an interface, laptop, or dedicated amp

Best for the Audeze MM-520: set it up in a quiet mixing or listening space rather than a shared studio floor, since the open-back design lets sound pass both ways through the earcups.

More Details

Why It Wins

• 90mm Planar Magnetic Driver with Fluxor Magnet Array: An ultra-thin diaphragm moves inside Audeze's magnet array for low distortion and a wide, accurate soundstage.
• SLAM Acoustic Technology: A patent-pending approach to bass reproduction that keeps low end deep and tight without bleeding into the midrange.
• Fazor Phase Management: Corrects phase distortion inside the driver housing for cleaner, more precise imaging.

What Makes It Different

Most mixing headphones in this category use a single dynamic driver in a closed-back shell built for isolation. The MM-520's planar magnetic driver spreads the driving force evenly across the whole diaphragm for lower distortion, and its open-back design gives it a wider, more speaker-like soundstage than a sealed dynamic-driver headphone can produce.

Technical Highlights

• 18-Ohm Impedance: Low enough to drive cleanly from an audio interface or laptop headphone jack, without requiring a dedicated amp.
• 5Hz-50kHz Frequency Response: Extended range on both ends for a detailed, full-range reference for mixing decisions.
• 2.5m Cable with 6.3mm Adaptor: Long enough for desktop or studio use, with a 3.5mm connector and included 1/4" adaptor for interfaces and amps.

Buyers Guide

Who This Is For

• The Mixing Engineer: Anyone tracking or mixing who needs a reference they can trust away from studio monitors.
• The Critical Home Listener: Music lovers building a dedicated desktop or listening-room setup around detail and soundstage.
• The Amp or Interface Owner: Listeners who already have a clean headphone output and want a driver that can resolve what it's fed.

Ideal Use Case

• Home Mixing and Mastering Rooms: Where an open, accurate soundstage matters more than isolation.
• Desktop Critical Listening: Paired with an interface or DAC for near-field reference listening.
• Mobile Session Work: The included travel case and soft carry bag make it practical to bring along between sessions.

What To Pair It With

• An Audio Interface or DAC: With a clean headphone output for the most accurate signal path.
• A Dedicated Headphone Amplifier: Optional given the low impedance, but useful for extra headroom.
• Lossless or Hi-Res Source Material: To make full use of the detail the MM-520 resolves.

Alternative Options

The MM-520 is an open-back design built for quiet rooms — if you need isolation for tracking vocals, gaming, or working around others, Audeze's closed-back LCD-X is the better fit. If you want the MM-Series sound in a more travel-friendly, on-ear shape, we also carry the MM-100.