About the Sennheiser MM 400-X
Bluetooth for wireless music and talk
Bluetooth for wireless music and talk
Going somewhere? Don't forget your Sennheiser MM 400-X portable headphones. They're fantastic for enjoying your music and managing your phone calls without getting tangled up in cords. These headphones include built-in Bluetooth technology for a hassle-free wireless connection to compatible devices, such as many cell phones, laptop computers, tablets, and MP3 players. You can use the integrated volume, track skip, and call answer/end buttons built into the right earcup for convenient operation while your phone or music player remains safely in your pocket, purse, or backpack. The MM 400-X headphones even support the latest aptX technology a sophisticated audio circuit that delivers true high-fidelity stereo sound wirelessly over Bluetooth with aptX-enabled sources.
Great comfort, sound, and convenience
The MM 400-X's soft padded ear cushions and adjustable headband provide a comfortable fit for hours of relaxed listening, making these 'phones great to have on long trips. The headset's folding design makes for easy storage when you travel. Sennheiser's patented Duofol diaphragms provide detailed, crystal clear sound. And just in case you need it, Sennheiser includes a cable plus an airline adapter for a direct wired connection in situations where Bluetooth isn't permitted, or you want to make use of in-seat entertainment and other wired sound sources.
Product highlights:
- portable, folding, on-the-ear design
- padded, closed earcups and adjustable headband
- Bluetooth® wireless operation with advanced aptX audio circuitry for streaming high-quality stereo sound from aptX-enabled devices
- built-in microphone and wireless earcup controls for hands-free conversations using compatible Bluetooth cell phones
- integrated controls on the right earcup for track, volume, and answer/end call functions
- rechargeable lithium-polymer battery included
- single battery charge gives you:
- up to 20 hours Bluetooth talk time
- up to 10 hours Bluetooth listening time
- advanced Duofol drivers for outstanding sound quality
- frequency response 15-22,000 Hz
- 60" detachable audio cable with stereo mini plug included for wired listening options
- airline adapter, USB charging cable, multi-country wall charging adapter, and carrying case included
- weight: 3.7 oz.
- warranty: 2 years
- MFR # 504511
What's in the box:
Sennheiser MM 400-X owner's manual
- MM 400-X Wireless headphones
- BA 370 PX Lithium-Polymer rechargeable battery pack (installed)
- Wall charging power supply
- US power plug adapter
- EU power plug adapter
- UK power plug adapter
- AU power plug adapter
- Airline adapter (single female 3.5mm-to-dual male 3.5mm)
- 50" USB charging cable (Type A USB on one end and proprietary USB on the other end)
- 5' Audio cable (male 3.5mm miniplug on one end and male 2.5mm sub-miniplug on the other end)
- Zippered storage pouch
- Instruction Manual on CD-ROM
- Quick Guide
- Safety Guide
- Compliance statement
- "Replacement of the Mains Unit" sheet
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More details on the Sennheiser MM 400-X
Features & specs
General | ||
---|---|---|
Fit Style | On-ear | |
Earcup Type | Closed | |
Earcup Width x Height | 2.275" x 2.255" | |
Noise-canceling | No | |
Bluetooth | Yes | |
Bluetooth Version | --- | |
Single-earbud Operation | --- | |
Mic For Taking Calls | Yes | |
Voice Assistant Access | ||
Amazon Alexa | No | |
Google Assistant | No | |
Siri | No | |
Connectors | ||
3.5mm | No | |
1/4" | No | |
Lightning | No | |
4.4mm balanced | No | |
XLR4 balanced | No | |
2.5mm | No | |
Other | None | |
Specs | ||
Frequency Response | 15-22k Hz | |
Sensitivity | 107 dB | |
Impedance | N/A | |
Weight | 3.7 ounces | |
Cord Length | 60" | |
Parts Warranty | 2 Years | |
Labor Warranty | 2 Years |
Product Research
Features
Overview: The Sennheiser MM 400-X headphones are an accessory that allows you to enjoy your digital music files on your mobile phone or portable music device, including those equipped with Bluetooth technology. The MM 400-X can be used wirelessly, or in places where Bluetooth isn't available, you can plug them in and use them as wired headphones.
Bluetooth Wireless Reception/Transmission: The MM 400-X features Bluetooth v2.1 wireless reception and transmission with a built-in microphone for cable-free use with select Bluetooth enabled phones and audio devices. Supported Bluetooth profiles include A2DP (Advanced Audio Distribution Profile), AVRCP (Audio/Video Remote Control Profile), HSP (HeadSet Profile), and HFP (Hands-Free Profile). The MM 400-X saves the connection profiles of the last eight devices with which it was paired; when turned on it automatically tries to connect with one of those devices.
apt-X: The MM 400-X headphones are equipped with apt-X, an audio coding technology that works within Bluetooth to wirelessly deliver CD-quality audio from your portable music device to the headphones. With apt-X, you can listen to your digital music files in crisp, pure, and full stereo sound.
Controls: On the right ear-cup there are integrated controls for your connected phone or audio device. Audio controls include volume, skip forward or backward, fast forward or rewind within a song, play, and stop. Phone controls include volume, accept call, reject call, end call, redial, voice dial, and mute.
Battery Pack: The MM 400-X has a removable BA 370 PX Lithium-Polymer battery pack (3.7 volts DC/1 Wh) which provides up to 10 hours playback using Bluetooth reception. A power supply with US, UK, European, and Australian plug adapters is included to charge the battery pack; charging time is approximately three hours. The headphones can also be charged using a computer's USB port.
Collapsible Design: These headphones feature a collapsible design with metal-reinforced headband to ensure portability and durability.
Cord & Adapter: The MM 400-X will also work as wired headphones, useful when Bluetooth connection is not an option. The headphones come with a 60" mini-jack cable terminated by a 3.5mm connector for a wired connection. An in-flight audio adapter (dual mono 3.5mm) is included for added convenience.
Carrying Case: A nylon carrying case is included to protect the headphones during storage or transport.
Specifications: The MM 400-X has the following specs:
- Frequency Response: 15-22kHz
- Nominal Impedance: 590 Ω active mode; 100 Ω passive
- SPL (1 kHz/1 Volt): 107 dB
- THD (1 kHz): < 0.1%
- Connectors: 3.5mm, 3.5mm double mono plug in-flight adapter
- Weight: 3.7 ounces (105 grams)
- Bluetooth:
- Version: 2.1 + EDR
- Range: up to 33' (10 meters)
- Transmission Frequency: 2.4 GHz
- Transmission Power: 8 dBm
- Profiles: HSP, HFP, A2DP, AVRCP
- Codec: SBC, apt-X
The Sennheiser MM 400-X replaces these items
Sennheiser MM 400
- Bluetooth technology wirelessly transmits audio and phone calls from your compatible music player or cell phone to the headphones
- advanced Duofol drivers for outstanding sound quality
- rechargeable battery and multi-country charger included
Sennheiser MX W1
- wireless, "twist-to-fit" in-ear earbuds with dynamic drivers
- Kleer wireless technology delivers uncompressed stereo sound
- for use with Kleer-enabled audio/video devices and any music player with a mini headphone jack
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