Introduction
Welcome to the Marshall BB-2 Blues Breaker Effects Pedal. This pedal is designed to provide versatile overdrive and boost tones, building upon the legacy of the original Bluesbreaker. It features two distinct modes: Boost and Blues, offering a range of sonic possibilities for guitarists seeking classic Marshall tones.
Important Safety Information
Please read and understand these instructions before operating your BB-2 pedal. Failure to do so may result in damage to the unit or personal injury.
- Use only the specified power supply (9V DC, center negative).
- Do not expose the unit to moisture, rain, or extreme temperatures.
- Do not attempt to service the unit yourself. Refer all servicing to qualified personnel.
- Disconnect power when not in use or during electrical storms.
Key Features
The Marshall BB-2 Blues Breaker pedal offers the following features:
- Dual Mode Operation: Select between "Boost" and "Blues" modes for versatile tonal options.
- Boost Mode: Provides a clean volume boost, ideal for pushing the front end of a valve amplifier or compensating for signal loss over long cable runs.
- Blues Mode: Delivers a natural, warm overdrive reminiscent of classic Marshall non-master volume amplifiers, perfect for crunchy rhythms and singing lead tones.
- Intuitive Controls: Dedicated knobs for Mode, Drive, Tone, and Volume allow for precise sound shaping.
- Durable Construction: Built with robust materials to withstand the rigors of live performance and frequent use.

Setup and Connections
Powering the Pedal
The BB-2 pedal can be powered by a 9V battery or an optional 9V DC power supply (center negative).
- To install a battery: Unscrew the bottom plate of the pedal, insert a fresh 9V battery, and carefully reattach the plate.
- For DC power: Connect a compatible 9V DC, center negative power adapter to the "DC IN" jack located on the rear of the pedal.
Connecting to Your Amplifier and Guitar
- Connect your guitar to the "INPUT" jack on the right side of the pedal using a standard 1/4-inch instrument cable.
- Connect the "OUTPUT" jack on the left side of the pedal to your amplifier's input using another standard 1/4-inch instrument cable.
Ensure all connections are secure before powering on your amplifier and the pedal.
Operation
Controls Overview
| Control | Function | Description |
|---|---|---|
| Mode | Selector Switch | Toggles between "Boost" and "Blues" modes. |
| Drive | Knob | Adjusts the amount of overdrive or gain in Blues mode. This control is bypassed in Boost mode. |
| Tone | Knob | Shapes the overall tonal character, from darker (counter-clockwise) to brighter (clockwise). |
| Volume | Knob | Controls the overall output level of the pedal. In Boost mode, this knob controls the clean boost level. |
| Footswitch | On/Off Switch | Engages or bypasses the effect. |
Using the Modes
The BB-2 offers two distinct operational modes, each providing a unique sonic characteristic:
Boost Mode
Select "Boost" using the Mode switch. This mode provides a clean volume boost without altering your core tone. It is ideal for pushing the front end of a valve amplifier into natural overdrive or for compensating for signal loss over long cable runs. The Volume knob controls the level of the clean boost. The Drive control is inactive in this mode.
Blues Mode
Select "Blues" using the Mode switch. This mode delivers a natural, warm overdrive. It is designed to emulate the tonal characteristics of classic Marshall non-master volume amplifiers from the 1960s. Use the Drive knob to adjust the amount of distortion, and the Tone knob to fine-tune the sound from dark to bright. The Volume knob controls the overall output level of the effect.
General Usage Tips
- Experiment with the Drive and Tone controls in Blues mode to find your desired sound, from subtle grit to rich, singing lead tones.
- Use the Volume control to balance the pedal's output with your amplifier's clean volume, ensuring a smooth transition when engaging the effect.
- The BB-2 is designed to interact well with tube amplifiers, enhancing their natural characteristics and responsiveness.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the pedal's exterior. Do not use abrasive cleaners, solvents, or excessive moisture, as these can damage the finish or internal components.
- Battery Replacement: If using battery power, replace the 9V battery when the effect indicator light dims or the sound quality degrades, indicating low power.
- Storage: Store the pedal in a cool, dry place away from direct sunlight and extreme temperatures when not in use for extended periods. Disconnect all cables and remove the battery if storing for a long time.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound when pedal is engaged. | No power to the pedal / Incorrect cable connections. | Check battery or power supply. Ensure all instrument cables are securely connected to the correct INPUT and OUTPUT jacks. |
| Weak or distorted sound (not intended). | Low battery / Incorrect control settings. | Replace the 9V battery. Adjust Volume, Drive, and Tone controls to appropriate levels. |
| Pedal not turning on/off via footswitch. | Footswitch malfunction / Internal fault. | Ensure power is connected and the pedal is receiving power. If the problem persists, contact customer support for assistance. |
| Excessive noise or hum. | Ground loop / Power supply interference / Faulty cables. | Use a high-quality isolated power supply. Check all cables for damage and ensure proper shielding. Try a different power outlet. |
Technical Specifications
- Model: PEDL 10026
- Power Supply: 9V DC (center negative), 9V battery
- Dimensions (L x W x H): 8.66 x 5.91 x 4.33 inches
- Weight: 12.7 ounces (0.36 Kilograms)
- Hardware Interface: HP-HSC
- Signal Format: Analog
- Color: Gold
Warranty and Customer Support
For detailed warranty information and technical support, please visit the official Marshall website or contact your local authorized Marshall distributor.
Official Marshall Website: www.marshall.com
For further assistance or to explore other Marshall products, you can also visit the Marshall Store on Amazon: Marshall Store.





