Audeze MM-100
Professional planar magnetic headphones with advanced Fluxor/Fazor technology at accessible price point, limited by frequency-response tuning
Overview
The Audeze MM-100 is a professional-grade open-back headphone that brings the company’s planar magnetic driver technology to a more accessible 399 USD price point. Developed in collaboration with Grammy award-winning engineer/producer Manny Marroquin, the MM-100 employs 90mm planar magnetic transducers featuring Audeze’s patented Fluxor magnet arrays and Fazor phase management, with hand-assembly and testing performed at Audeze’s Southern California facility. Despite its advanced technical implementation, the MM-100 represents Audeze’s entry into the competitive mid-fi market segment.
Scientific Validity
\[\Large \text{0.5}\]Available measurements show mixed results. Manufacturer specifications claim THD below 0.1% at 100 dB SPL (1 kHz), and independent testing reports very low harmonic distortion with no audible degradation at both 94 and 104 dB SPL. At the same time, multiple sources note deviations in tonal balance: RTINGS describes a mostly flat profile with underemphasized low-bass (≈−4 dB) and recessed treble (≈−5 dB), while Headphones.com highlights a pronounced ~4 kHz dip into a mid-treble peak that can yield “a fairly unnatural, incoherent, and slightly disorienting” treble with lispiness in voices and cymbals [1][2]. In short, distortion performance is excellent, but the upper-mid/treble tuning departs from neutral targets.
Technology Level
\[\Large \text{0.9}\]The MM-100 significantly exceeds industry norms in proprietary implementation. It uses Fluxor™ magnet arrays to increase flux density and Fazor™ phase management for improved wave propagation [3]. The 90mm drivers employ ultra-thin Uniforce™ diaphragms with N50 neodymium magnets. Manufacturing employs laser etching for diaphragm circuit traces rather than acid etching, supporting high driver consistency, with hand assembly and multi-stage QC at the Southern California facility [4]. This technical sophistication places the MM-100 among the more advanced implementations in its price class.
Cost-Performance
\[\Large \text{0.5}\]Cost-performance is moderate at 399 USD when compared across driver types and classes to the lowest-price product that offers equivalent or better function and measured performance. A strong baseline alternative is the Sennheiser HD 560S at 199 USD (open-back, wired), designed for neutral listening and measured to deliver a generally flat response with solid consistency [5][6]. Calculation: 199 ÷ 399 = 0.499 → 0.5. This sets a stricter benchmark than limiting comparisons to planar models only; users prioritizing neutral tonality at lower cost will find the HD 560S more cost-efficient.
Reliability & Support
\[\Large \text{0.7}\]Audeze lists a one-year warranty for MM-100 covering all parts including drivers (drivers on many other Audeze models are three years, but MM-100 is one year). The warranty is transferable when originally purchased from an authorized dealer and runs from the original retail date. Direct warranty service covers parts, labor, and return shipping to the customer; within 30 days of purchase Audeze covers shipping both ways for defects. Separately, Audeze offers a 30-day return policy for direct sales (original purchaser) with customer-paid return freight and possible restocking fees if items are missing/damaged [7]. Hand assembly and multi-stage QC further support reliability expectations.
Rationality of Design Philosophy
\[\Large \text{0.8}\]Audeze’s design emphasizes measurement-driven transparency, resolution, and transient response, with core technologies (Fluxor, Fazor, Uniforce) trickling down from flagships to accessible models [8]. The lack of built-in DSP correction leaves the known upper-mid/treble deviations unaddressed, but the overall engineering approach remains coherent and technically rational.
Advice
The MM-100 suits professional users and enthusiasts who value robust build and advanced planar technology. If you require near-neutral tonality at lower cost, the Sennheiser HD 560S merits primary consideration. If you prefer a planar presentation at a lower price, HiFiMAN Sundara also remains a popular alternative, though its pricing fluctuates and tuning differs.
References
- RTINGS.com, Audeze MM-100 Review, https://www.rtings.com/headphones/reviews/audeze/mm-100, 2024–2025 updates
- Headphones.com, Audeze MM-100: Mid-Fi Mainstay or Missed Opportunity?, https://headphones.com/blogs/reviews/audeze-mm-100-mid-fi-mainstay-or-missed-opportunity, 2023
- Audeze, Fluxor Magnets, the ultimate in diaphragm control, https://www.audeze.com/blogs/technology-and-innovation/fluxor-magnets
- PS Audio (Copper Magazine), A Visit to Audeze, https://www.psaudio.com/blogs/copper/a-visit-to-audeze-maker-of-high-end-headphones
- Sennheiser, HD 560S Product Page, https://www.sennheiser-hearing.com/en-US/p/hd-560s/
- RTINGS.com, Sennheiser HD 560S Review, https://www.rtings.com/headphones/reviews/sennheiser/hd-560s
- Audeze Support, Warranty & 30-Day Trial Policy, https://support.audeze.com/hc/en-us/articles/360000326626 ; https://support.audeze.com/hc/en-us/articles/360000534323
- Audeze, Transparency, resolution, and transient response, https://www.audeze.com/blogs/technology-and-innovation/transparency-resolution-and-transient-response
(2025.9.3)