Denon AH-MM400


Targeted to serious music listeners, Denon’s new Music Maniac™ headphones are packed with advanced technologies, and feature proprietary drivers and housings. Discover a whole new world of musical enjoyment with Denon’s AH-MM400 reference class headphones, which are professionally tuned for the fl attest response over the widest frequency range among Music Maniac series. It features an over-ear (circum-aural) design that provides top comfort as well as passive acoustic isolation without the need for noise cancelling, and features real American Walnut earcup housings that provide natural tone and an elegant look.

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Natural American Walnut Earcups
Featuring hand-carved natural American Walnut earcup housings, the AH-MM400 delivers a superb musical experience, with balanced tonal quality thanks to the resonance-free natural wood housings. A comfortable over-ear (circum-aural) design, the AH-MM400 provides a high degree of passive acoustic isolation, letting you listen to your favorite tracks without distracting background noise interference.

Aluminum Die-Cast Hangers
The earcup housings connect to the lightweight adjustable headband via aluminum alloy die-cast hangers that feature resonance-free construction, along with high rigidity for maximum durability. The AH-MM400 also features collapsible earcups for storage in the supplied carrying pouch.

40mm Carbon/Paper Composite Diaphragms with Free Edge and Neodymium Magnets
The AH-MM400 features proprietary 40mm drivers with advanced Carbon/Paper composite blend diaphragms and neodymium magnets along with Denon’s exclusive Free Edge technology, which dispenses with the traditional diaphragm surround suspension to deliver extended frequency response all the way up to 40 kHz.

Oxygen Free Copper Cables
For the utmost audio fidelity, the AH-MM400 comes with 2 detachable audio cables, both featuring high purity Oxygen Free Copper (OFC) cable technology. One cable features a builtin microphone along with an in-line remote for volume, track
selection and smartphone control (compatible with iOS devices). The other cable is provided for users who prefer a unit without a remote, and both cables feature gold-plated connectors.

Contemporary European Design
Designed to look as good as they sound, the AH-MM400 features a fresh European inspired design that combines classic styling with a modern touch.


  • Weight : 0.3 KG
  • Driver diameter : 40mm
  • Driver type : Dynamic (Carbon/paper diaphragm + Free Edge)
  • Impedance : 32 ohm
  • Sensitivity : 96 dB/mW
  • Maximum power input : 1000mW
  • Frequency response : 10-40,000 (Hz)


  •  Carrying pouch
  • Detachable OFC cable with remote and microphone
  • Detachable OFC analog audio cable
  •  3.5mm/¼” plug adapter

For more than 60 years, the JBL® brand has delivered products that exemplify the technology and expertise gained through our leadership in professional sound reproduction. The JBL name has been synonymous with the precise, naturally articulated sound found in many of the world’s most prestigious locations, including clubs, cinemas and recording studios, and live-music reinforcement in venues ranging from concert halls to outdoor stadiums.