Bose QC25 Owner's Manual

The Bose QC25 is an over-ear, noise-cancelling headphone featuring Active EQ for balanced audio at any volume, TriPort acoustic headphone structure for lifelike sound, proprietary Active Noise Reduction technology with Aware Mode switch, AAA battery-powered operation (up to 35 hours), detachable audio cable with inline remote/microphone for Apple and Android devices, fold-flat design for portability, and carrying case. Below are key sections for safety, features, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. What's in the Box 3. Getting Started 4. Specifications 5. Controls and Indicators 6. Using Your Headphones 7. Battery Information 8. Care & Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Headphones with Active Noise Reduction, detachable audio cable with inline remote, AAA battery compartment, carrying case.

FeatureDescription
Active Noise ReductionElectronically reduces unwanted noise
Aware Mode switchAllows you to hear surroundings without removing headphones
Active EQMaintains balanced audio at any volume level
TriPort acoustic structureDelivers lifelike sound performance
Inline remote/microphoneFor call and music control on compatible devices
Fold-flat designFor easy storage and portability
AAA battery operationUp to 35 hours of use with noise cancellation on
Detachable audio cable3.5mm plug; includes airline adapter
Carrying caseFor protection during travel
Comfortable ear cushionsPlush materials for extended wear

What's in the Box

Unpack and verify all contents are present.

  1. Bose QC25 headphones
  2. Detachable audio cable with inline remote and microphone
  3. AAA battery (installed)
  4. Airline adapter (two-prong)
  5. Carrying case
  6. Owner's manual

WARNING! Keep packaging materials away from children to avoid suffocation hazard.

Getting Started

Prepare your headphones for first use.

  1. Install battery: Slide open battery compartment on right ear cup, insert AAA battery with correct polarity.
  2. Connect audio cable: Plug the 3.5mm connector firmly into the left ear cup jack.
  3. Power on: Slide the power switch to the "On" position; green indicator light will illuminate.
  4. Connect to device: Plug the other end of the cable into your audio source (phone, tablet, computer, in-flight entertainment).

CAUTION! Do not force connectors. Ensure battery is installed correctly to avoid damage.

Specifications

Controls and Indicators

Primary controls located on ear cups and inline remote.

Right Ear Cup: Power switch (On/Off), battery compartment, Aware Mode button (press to toggle).

Inline Remote: Volume up/down buttons, multi-function button (play/pause, answer/end call, voice assistant), microphone.

Indicator Light: Green light indicates power and active noise reduction are on. No light when powered off.

Aware Mode: Press button to reduce noise cancellation and hear surroundings; press again to return to full cancellation.

Using Your Headphones

For music, calls, and travel.

  1. Listening to music: Power on, connect to source, adjust volume using inline remote or source device.
  2. Answering calls: Press multi-function button once to answer; press again to end.
  3. Using voice assistant: Press and hold multi-function button to activate Siri or Google Assistant.
  4. Airline use: Connect airline adapter to cable, then plug into seat jack.
  5. Fold for storage: Rotate ear cups inward and fold flat into carrying case.

Tip: For best noise cancellation, ensure ear cups form a seal around your ears.

Battery Information

Powered by a single AAA battery.

  1. Battery life: Up to 35 hours with noise cancellation on. Less if using Aware Mode frequently.
  2. Low battery: Audio may cut out or noise cancellation may become less effective.
  3. Replacing battery: Slide open compartment, remove old battery, insert new AAA battery observing polarity.
  4. Battery safety: Use alkaline batteries only. Do not recharge non-rechargeable batteries. Remove battery if not using for extended periods.

WARNING! Risk of explosion if battery is replaced incorrectly. Replace only with same or equivalent type.

Care & Maintenance

Unplug cable before cleaning. Use dry, soft cloth only; no liquids or solvents.

Ear cushions: Can be gently wiped with damp cloth if necessary. Allow to dry completely before use.

Storage: Store in carrying case when not in use to protect from dust and damage.

CAUTION! Do not immerse in water. Keep away from extreme heat and humidity.

Regulatory Information

FCC Compliance: This device complies with Part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference. ICES-003 Compliance: Class B digital apparatus. Contains FCC ID: XXXXXXXXXXX and IC: XXXXXXXXXXX. For full compliance statements, visit www.bose.com/compliance. Copyright © Bose Corporation. Bose and the Bose logo are trademarks of Bose Corporation. Patents: www.bose.com/patents. For support, visit www.bose.com/support or contact 1-800-999-2673.

Troubleshooting

SymptomPossible CauseCorrective Action
No soundPower off / cableTurn power on; check cable connections at both ends; ensure audio source is on and unmuted.
Noise cancellation not workingBattery / switchReplace battery; ensure power switch is in "On" position; green light should be on.
Intermittent sound or staticLoose connection / batteryRe-seat cable connections; replace battery if low.
Inline remote not workingDevice compatibility / cableEnsure device supports inline remote (check compatibility list); try a different audio cable.
Battery drains quicklyOld battery / usageUse fresh alkaline battery; reduce use of Aware Mode to extend life.

Reset: Power off, remove battery for 30 seconds, reinsert battery and power on.

Service: 1-800-999-2673; www.bose.com/support

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