Introduction
The Blackstar Fly 103 is an extension speaker designed to complement the Blackstar Fly 3 compact mini amplifier. When connected, it transforms your Fly 3 into a 6-watt stereo setup, enhancing the overall sound experience. This manual provides essential information for setting up, operating, and maintaining your Fly 103 extension cabinet.
Safety Instructions
- Ensure the Fly 103 is placed on a stable, level surface to prevent accidental falls.
- Do not expose the unit to moisture or extreme temperatures.
- Only use the provided built-in cable for connection to the Blackstar Fly 3 amplifier.
- Avoid blocking ventilation openings to prevent overheating.
- Disconnect from power when not in use or during electrical storms.
Setup
The Fly 103 extension cabinet is designed for simple integration with your Blackstar Fly 3 mini amp. Follow these steps for proper setup:
- Positioning: Place the Fly 103 next to your Fly 3 mini amp. For optimal stereo separation, position them a reasonable distance apart, typically on either side of your listening position.
- Connection: Locate the built-in cable on the back of the Fly 103 extension cabinet. This cable is specifically designed for connecting to the Fly 3.
- Plug In: Connect the built-in cable from the Fly 103 into the dedicated extension speaker input on your Blackstar Fly 3 mini amplifier. Ensure the connection is secure.
- Power: If using a power supply (sold separately or as part of a Fly Stereo Pack), ensure it is connected to the Fly 3. The Fly 103 draws power from the Fly 3.
Once connected, your Fly 3 and Fly 103 will operate as a 6-watt stereo system.

Image: The Blackstar Fly 103 extension cabinet, ready for connection to the Fly 3 amplifier.

Image: Rear view of the Fly 103, highlighting the integrated connection cable for the Fly 3 amp.
Operating Instructions
After successful setup, the Fly 103 operates in conjunction with your Fly 3 mini amp. The controls on the Fly 3 will now affect the combined stereo output.
- Stereo Sound: The Fly 103 creates a true stereo setup with the Fly 3, providing a wider and more immersive sound experience for both guitar playing and music playback.
- Enhanced Delay: The stereo configuration enhances the Fly 3's built-in digital 'tape' delay effect, making it sound more spacious and dynamic.
- Versatile Use: Beyond guitar amplification, the combined Fly 3 and Fly 103 system can function as portable stereo speakers for MP3 players or as computer speakers, offering quality audio output.

Image: The Blackstar Fly 103 extension cabinet, showcasing its compact design.
Maintenance
To ensure the longevity and optimal performance of your Blackstar Fly 103 extension cabinet, follow these general maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the exterior of the cabinet. Avoid abrasive cleaners or solvents, as these can damage the finish.
- Storage: When not in use, store the unit in a dry environment, away from direct sunlight and extreme temperatures.
- Handling: Handle the cabinet with care. Avoid dropping it or subjecting it to strong impacts, which could damage internal components.
- Cable Care: Periodically inspect the built-in connection cable for any signs of wear or damage. If damaged, contact Blackstar support for assistance.
Troubleshooting
If you encounter issues with your Fly 103 extension cabinet, consider the following common troubleshooting steps:
- No Sound:
- Ensure the built-in cable is securely connected to both the Fly 103 and the Fly 3 amplifier.
- Verify that the Fly 3 amplifier is powered on and functioning correctly.
- Check the volume and gain settings on your Fly 3 amplifier.
- Distorted Sound:
- Reduce the gain or volume on your Fly 3 amplifier.
- Ensure the input signal to the Fly 3 is not too strong.
- Intermittent Connection:
- Check the connection cable for any loose points or damage.
- Gently reseat the cable connection.
If problems persist after attempting these steps, please refer to the Warranty & Support section for further assistance.
Specifications
| Feature | Detail |
|---|---|
| Brand | Blackstar |
| Model Name | FLY 103 |
| Model Number | FLY103 |
| Compatible Devices | Blackstar FLY 3 mini amp |
| Output Wattage (when paired with Fly 3) | 6 Watts (stereo) |
| Speaker Size | 3 inches (17.27 Centimeters) |
| Output Channel Quantity | 2 (stereo with Fly 3) |
| Audio Output Mode | Stereo |
| Connector Type | 3.5mm Jack (built-in cable) |
| Enclosure Material | Stainless Steel |
| Item Dimensions (D x W x H) | 5.35"D x 6.8"W x 4.21"H |
| Item Weight | 0.5 Pounds |
| UPC | 845644002740, 755756643925 |
Warranty & Support
Warranty: The Blackstar Fly 103 extension cabinet comes with a 1-year manufacturer's warranty. Please retain your proof of purchase for warranty claims.
Support: For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please visit the official Blackstar website or contact their customer support directly. You can find contact information on the Blackstar website or through your retailer.

