Introduction
This instruction manual provides essential information for the safe and effective use of your GUY-TECH AC Adapter, Model BLL-122000, designed for compatibility with the Vintage DOD 822 RM 8 Channel Professional Mixer. Please read this manual thoroughly before use and retain it for future reference.
Safety Information
- Ensure the input voltage of your power outlet is 110V AC only. This adapter is not designed for AC to DC conversion.
- Do not expose the adapter to water, moisture, or extreme temperatures.
- Avoid dropping or subjecting the adapter to severe impact.
- Do not attempt to open or modify the adapter. Refer all servicing to qualified personnel.
- Keep out of reach of children.
- Disconnect the adapter from the power source when not in use for extended periods.
- This adapter features built-in Over Voltage, Over Current, and Short Circuit output protection.
Product Overview
The GUY-TECH AC Adapter (Model BLL-122000) is a replacement power supply designed to provide reliable AC power to compatible devices, specifically the Vintage DOD 822 RM 8 Channel Professional Mixer. It features a compact design for portability and includes multiple protection mechanisms for safe operation.

Figure 1: Overview of the GUY-TECH AC Adapter, showing the main unit, standard US 2-pin AC input plug, and the barrel output connector.

Figure 2: The AC adapter highlighting its multi-protection features, including over current, over charge, short circuit, temperature, over load, and over voltage protection.
Setup
- Verify Compatibility: Ensure your device, such as the DOD 822 RM mixer, requires a 110V AC input power supply.
- Connect to Device: Insert the barrel connector of the GUY-TECH AC Adapter into the power input port of your compatible device.
- Connect to Power Outlet: Plug the 2-pin AC input plug of the adapter into a standard 110V AC wall outlet.
- Power On: Once connected, your device should receive power. Refer to your device's manual for specific power-on procedures.
Operating Instructions
The GUY-TECH AC Adapter functions as a direct power source for your compatible electronic device. Once properly connected, it continuously supplies the necessary AC power. There are no user-adjustable settings on the adapter itself.
- Always ensure the adapter is securely plugged into both the device and the wall outlet during operation.
- Avoid placing the adapter in enclosed spaces where heat can build up.
- If the adapter or your device exhibits unusual behavior (e.g., excessive heat, smoke, strange odors), immediately disconnect the adapter from the power outlet.
Maintenance
- Cleaning: Disconnect the adapter from all power sources before cleaning. Use a soft, dry cloth to wipe the exterior. Do not use liquid cleaners or solvents.
- Storage: When not in use, store the adapter in a cool, dry place, away from direct sunlight and moisture. Avoid tightly coiling the cable to prevent damage.
- Cable Inspection: Periodically inspect the power cord and connectors for any signs of damage, fraying, or bending. If damage is observed, discontinue use and replace the adapter.

Figure 3: Illustration of the adapter's flexible and durable cable, designed to withstand bending and pulling.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device not powering on. | Adapter not properly connected; Power outlet issue; Device malfunction. | Ensure both ends of the adapter are securely plugged in. Test the power outlet with another device. Verify the device itself is functioning correctly. |
| Adapter feels excessively hot. | Overload; Poor ventilation; Internal fault. | Disconnect immediately. Ensure the adapter is in a well-ventilated area. If overheating persists, discontinue use. |
| Intermittent power to device. | Loose connection; Damaged cable. | Check all connections for tightness. Inspect the cable for any visible damage. Replace if cable is damaged. |
Specifications
- Model: BLL-122000
- Input: 110V AC, 60Hz (2-Pin AC Plug)
- Output: AC (Barrel Connector, compatible with DOD 822 RM mixer)
- Color: Black
- Material: Metal, Plastic
- Special Features: Lightweight, Durable Cable
- Protection: Over Voltage, Over Current, Short Circuit, Over Heat
- Certifications: CCC, CE, RoHS
Environmental Considerations
This product contains materials that may be subject to Proposition 65 warning in California. Please dispose of this product responsibly according to local regulations at the end of its life cycle. Do not dispose of with household waste.

