Introduction
The Marshall Major II Bluetooth On-Ear Headphones provide a high-quality audio experience with the convenience of wireless connectivity. Designed for comfort and durability, these headphones feature custom-tuned drivers for excellent sound reproduction and a long-lasting battery. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your Major II Bluetooth headphones.

Figure 1: Front view of the Marshall Major II Bluetooth On-Ear Headphones.
Setup
What's in the Box
- Marshall Major II Bluetooth On-Ear Headphones
- Detachable 3.5mm audio cable
- USB charging cable
Charging the Headphones
Before first use, fully charge your Major II Bluetooth headphones.
- Connect the small end of the USB charging cable to the micro USB port on the headphones.
- Connect the larger end of the USB charging cable to a USB power adapter (not included) or a computer's USB port.
- The LED indicator on the headphones will illuminate during charging and change color or turn off when fully charged.
A full charge takes approximately 6 hours and provides over 30 hours of wireless playtime.

Figure 2: Bottom view of the headphones, highlighting the charging port and control knob.
Bluetooth Pairing
To connect your Major II Bluetooth headphones to a Bluetooth-enabled device:
- Ensure the headphones are charged and powered off.
- Press and hold the control knob for approximately 5 seconds until the LED indicator flashes blue, indicating pairing mode.
- On your device, enable Bluetooth and search for available devices.
- Select "Major II Bluetooth" from the list of devices.
- Once connected, the LED indicator will turn solid blue.
The headphones have a wireless range of up to 10 meters (30 feet).
Operating Instructions
Using the Control Knob
The Major II Bluetooth headphones feature a multi-directional control knob for easy management of music and calls.
- Power On/Off: Press and hold for 3 seconds.
- Play/Pause: Single press.
- Next Track: Push right.
- Previous Track: Push left.
- Volume Up: Push up.
- Volume Down: Push down.
- Answer/End Call: Single press during an incoming call or active call.
- Reject Call: Double press during an incoming call.

Figure 3: Demonstrating interaction with the multi-directional control knob.
Wired Connection
The Major II Bluetooth headphones can also be used with the included 3.5mm audio cable. This is useful when the battery is depleted or for connecting to devices without Bluetooth.
- Connect one end of the 3.5mm cable to the audio input jack on the headphones.
- Connect the other end to the 3.5mm audio output of your device.
- The headphones will automatically switch to wired mode.

Figure 4: Headphones connected via the detachable 3.5mm audio cable.
Maintenance
Cleaning
To maintain the appearance and functionality of your headphones:
- Wipe the ear cushions and headband with a soft, dry cloth.
- Do not use harsh chemicals or abrasive cleaners.
- Avoid exposing the headphones to excessive moisture.
Storage
The Major II Bluetooth headphones feature a collapsible design for easy storage and portability.
- Fold the earcups inwards towards the headband.
- Store in a cool, dry place away from direct sunlight and extreme temperatures.

Figure 5: Headphones in their folded, compact state.

Figure 6: The compact size of the folded headphones, easily held in hands.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Battery is depleted. | Charge the headphones using the USB cable. |
| Cannot pair via Bluetooth | Headphones not in pairing mode; device Bluetooth off; too far from device. | Ensure headphones are in pairing mode (flashing blue LED). Turn Bluetooth on your device. Move headphones closer to the device (within 10 meters). |
| No sound or low volume | Volume too low on headphones or device; incorrect audio source selected; headphones not connected. | Increase volume on both headphones and connected device. Ensure headphones are properly paired or connected via 3.5mm cable. |
| Poor sound quality | Interference; low battery; distance from device. | Move away from sources of interference (e.g., Wi-Fi routers). Charge headphones. Reduce distance between headphones and device. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | 04091378 |
| Connectivity Technology | Bluetooth, 3.5 mm Jack |
| Wireless Communication Technology | Bluetooth v4.0 AptX |
| Bluetooth Range | 10 meters (30 feet) |
| Battery Life | Over 30 hours |
| Charging Time | Approximately 6 hours |
| Frequency Range | 20Hz - 20,000Hz |
| Impedance | 85 ohms |
| Item Weight | 6.28 Ounces (178 grams) |
| Product Dimensions | 6.3 x 3.15 x 6.3 inches (16 x 8 x 16 cm) |
| Manufacturer | Zound Industries |
Warranty and Support
For information regarding product warranty, please refer to the warranty card included with your purchase or visit the official Marshall website.
A digital version of the user manual can be accessed here.







