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SE-MS9BN Wireless Noise-Cancelling Headphones


A superb music space exclusively for you, fitting your style scene wherever your day takes you.

The Pioneer S9 features active noise-cancelling technology to immerse you completely in music without interference from surrounding noise. Further, Ambient Awareness Mode allows the right amount of sound in from the outside world. With a newly featured Assistant button, you can skip or pause songs, get notified about new messages, and search via voice control without pulling out your smartphone. Bluetooth® technology supports Qualcomm® aptX™ HD audio*, enabling high playback quality with the freedom of a wireless connection. Thanks to a built-in high capacity battery, continuous 24-hour music playback is possible—great for long flights. Premium finish with aluminum housings and use of textured, comfortable materials add a quality accent to your everyday style.
* Playback with the Qualcomm® aptX™ HD audio codec requires Qualcomm® aptX™ HD audio-compatible device.

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Product highlights at a glance:

  • Instant pairing with NFC
  • 24 hours operation including playback
  • Noise-cancelling and Ambient Awareness Mode
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Audio Features

Premium Sound Quality

  • Extra-large Φ 40 mm (1 9/16˝) rare-earth-magnet drivers
  • Lightweight and powerful CCAW voice coils for wide-spectrum clarity
  • Supports Hi-Res Audio playback with supplied cable connected
  • Qualcomm® aptX™ HD audio supports 48 kHz/24-bit audio reproduction
  • Active Noise-Cancelling Technology and Ambient Awareness Mode operable via a single switch or Pioneer Headphone App
  • Circumaural housing shape fully encloses ears within compact footprint
  • Ergonomically sculpted low-repulsion urethane earpads for superior isolation

Wireless Technologies

  • Optimized for the Google Assistant
  • Instant touch-and-pair convenience with NFC technology
  • Discrete switches/buttons for power on/off/noise-management functions; volume/skip; play/pause/accept call/end call; and the Google Assistant
  • Multi-point Function enables wireless connection of two phones simultaneously
  • Long-life battery returns approx. 24 hours connection/playback with 4-hour recharge via supplied Micro USB cable

Design Features

  • Retro-modern fusion echoes hi-fi heritage with leading-edge features
  • Wide and thick polyurethane headband cushion for comfort and stability
  • Durable and comfortable leather-like materials for headband and earpads
  • Premium materials used throughout for excellent quality feeling
  • Connect the supplied headphone cable to listen with depleted batteries
  • Echo Cancellation and Noise Suppression Function enhance phone-call audibility and clarity
  • Immaculate aluminum housing finish expresses a sense of luxury

Specifications & Accessories

  • Transmission method: Bluetooth®® Ver. 4.2
  • Output: Bluetooth® Standard Protocol Power Class 2
  • Transmission distance: Up to 10m
  • Frequency used: 2.4 GHz (2.4000 GHz–2.4835 GHz)
  • Frequency response:
    • 5 Hz–22,000 Hz (with Bluetooth® connection)
    • 5 Hz–40,000 Hz (with wired connection)
  • Modulation: FHSS
  • Supported Bluetooth® profiles: A2DP/AVRCP/HFP/HSP
  • Supported codecs: SBC/AAC/Qualcomm® aptX™/Qualcomm® aptX™ HD
  • Multi-pairing: Max. 8 devices and Multi-point: Max. 2 devices
  • Power source: DC 3.7 V rechargeable lithium-ion battery
  • Battery time: Max. 24 hours of continuous transmission (NC ON/including music-play time). Battery time: Max. 27 hours of continuous transmission (NC OFF/including music-play time)
  • Charging time: Approx. 4 hours
  • Type: Wireless closed-back stereo headphones
  • Driver: Φ 40 mm (1 9/16˝) rare-earth-magnet dynamic driver
  • Supplied with detachable headphone cable, micro USB charging cable, and carrying pouch

Dimensions & Weight

  • Box Dimensions: (W x H x D) 200 x 255 x 110 mm
  • Weight: 300g

Stay connected with Bluetooth wireless technology


No more snagged cables or digging around for phones just to lower the volume or pick up a call. Be free, tethered to your phone’s best features wirelessly. Bluetooth supports standard SBC and high-quality AAC codecs for outstanding audio quality. With intuitive housing buttons at your fingertips, you can take, make, and end phone-calls; skip tracks; adjust audio volume; and access the Google Assistant with ease.

Multi-point Function pairs two phones

Multi-Point Function

Multi-point Function lets you wirelessly connect two smartphones at once. Take a call with one phone and listen to music with another. An easy-to-manage solution for people with work and private phones.

Optimised for the Google Assistant*

Google Assistant

Need directions? Want to make a call by just using your voice? How about hands-free music control? You can do all this and more with the S9 optimized for the Google Assistant. Continue your conversations while on the go and easily access the best of Google, from Google Play Music to Google Maps. You can quickly enjoy entertainment, stay connected to friends, get information, and manage your day all without glancing at your phone. Listen to your favorite songs, have notifications and messages read to you, or set reminders and timers. Just press and hold the button to start a conversation with your Google Assistant.
* Subscriptions to music streaming services may be required. Some third-party apps may not be compatible with the Google Assistant and S9. The Google Assistant is not available in certain languages and countries.

Lose yourself in hi-res sound

HiRes Audio

If deep, punchy bass and a lively mid-range for intimate vocal presence sound good to you, wait till you hear the S9. Large 40 mm rare-earth-magnet drivers produce rich, dynamic bass sound while lightweight but highly conductive CCAW voice-coils express low, mid, and high frequencies with amazing clarity - the perfect companion to your Hi-Res Audio* library.
* With supplied headphone cable connected to a compatible player.

High-quality sound with Qualcomm aptX™ HD audio

Qualcomm aptX HD

Qualcomm® aptX™ HD audio ensures your Bluetooth-enabled S9 can reproduce high-definition audio at up to 48 kHz/24-bit (LPCM). Like aptX, which facilitates wireless playback indistinguishable from CD quality, aptX HD audio preserves data integrity with a unique transmission method resulting in a better-than-CD listening experience. With aptX HD audio, you can enjoy HQ music without cable hassles.
* Requires Qualcomm aptX HD audio-compatible source device.

Instant pairing with NFC

NFC Instant Pairing

Pairing the S9 with your compatible phone, DAP, or audio component couldn’t be easier. Just touch your NFC-enabled devices together, and they connect automatically.

Manage your headphones easily with all-new app

Headphone App

Developed exclusively for Pioneer headphones, the new and expansible Pioneer Headphone App offers quick and smooth wireless connection to your compatible smartphone, easy access to call-enhancement functions, and one-touch switching between noise-cancellation modes. Future app updates will bring some cool new functions that enhance music life even further.
Note: Functional during wireless connection only.

Noise-cancelling and Ambient Awareness Mode


As well as being a revered brand in audiophile circles, Pioneer has experience developing devices to assist the hearing impaired. This technical experience helps make Pioneer’s active noise-cancelling technology among the most effective. External noise frequencies are neutralized with frequencies generated in opposite phase. Music blooms into a relaxing, comfortable, and satisfying listening experience. Ambient Awareness Mode, meanwhile, allows just enough sound in.

Manual Type Issue Date Languages
User Manual 30-07-2019 English Download
SE-MS9BN Datasheet Download

To request a Firmware file download or further Firmware information

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