1. Introduction
This manual provides essential information for the safe and effective use of your OMNIHIL AC/DC Adapter. This adapter is specifically designed to provide reliable power to the Singsation XL Portable Karaoke System (SPKA75).
Please read this manual thoroughly before using the product and retain it for future reference.
2. Safety Information
Your safety is paramount. Please observe the following precautions:
- UL Listed: This adapter is UL Listed, indicating it meets nationally recognized safety standards.
- Protection Features: The adapter incorporates Over Voltage output Protection (OVP), Over Current output Protection (OCP), and Short Circuit output Protection (SCP) to safeguard your device and the adapter itself.
- Indoor Use Only: Do not expose the adapter to water, moisture, or extreme temperatures. It is designed for indoor use only.
- Proper Ventilation: Ensure the adapter has adequate ventilation during use. Do not cover it or place it in an enclosed space that could lead to overheating.
- Handle with Care: Avoid dropping or subjecting the adapter to strong impacts. Do not attempt to open or modify the adapter.
- Disconnect When Not In Use: Unplug the adapter from the power outlet when not in use for extended periods.
- Cable Integrity: Regularly inspect the power cord for any signs of damage. Do not use if the cord is frayed or damaged.
3. Setup
Follow these steps to set up your OMNIHIL AC/DC Adapter:
- Identify the Adapter: Ensure you have the correct OMNIHIL AC/DC Adapter (Model: OMNI121319518) designed for your Singsation XL Portable Karaoke System (SPKA75).
- Locate the Power Input: Find the power input port on your Singsation XL Portable Karaoke System. Refer to your karaoke system's manual if you are unsure.
- Connect the Adapter to the Device: Carefully insert the output connector of the OMNIHIL adapter into the power input port of your Singsation XL Portable Karaoke System. Ensure a snug and secure connection.
- Connect to Power Outlet: Plug the AC prongs of the OMNIHIL adapter into a standard wall power outlet (100V ~ 240V, 50/60Hz).
- Verify Power: Once connected, your Singsation XL Portable Karaoke System should receive power. Check for any power indicators on your karaoke system.

Image 1: Top view of the OMNIHIL AC/DC Adapter with its coiled cable. This shows the main body of the adapter with its specifications label and the attached power cord.

Image 2: A close-up view of the OMNIHIL AC/DC Adapter's label, displaying input/output specifications, UL listing, and other certifications.
4. Operating Instructions
The OMNIHIL AC/DC Adapter is designed for simple plug-and-play operation. Once properly connected to a power outlet and your Singsation XL Portable Karaoke System, it will automatically supply the necessary power.
- Ensure the adapter is firmly plugged into both the wall outlet and the karaoke system.
- The adapter is designed to convert standard AC wall power to the DC power required by your karaoke system.
- No user intervention is required for its operation once connected.

Image 3: The OMNIHIL AC/DC Adapter positioned with its cable, showing the product in its packaging context.
5. Maintenance
To ensure the longevity and optimal performance of your OMNIHIL AC/DC Adapter, follow these simple maintenance guidelines:
- 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 aerosols.
- Storage: When not in use, store the adapter in a cool, dry place, away from direct sunlight and extreme temperatures. Avoid tightly coiling the cable to prevent damage.
- Inspection: Periodically inspect the adapter and its cable for any signs of wear, cuts, or damage. If any damage is observed, discontinue use immediately.

Image 4: Side profile of the OMNIHIL AC/DC Adapter, highlighting its compact design and the US-style plug prongs.
6. Troubleshooting
If you encounter issues with your OMNIHIL AC/DC Adapter, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No power to device. | Adapter not fully plugged in; power outlet not active; damaged adapter/cable. | Ensure adapter is securely plugged into both the wall and the device. Test the power outlet with another device. Inspect adapter and cable for damage; replace if damaged. |
| Device not charging/powering on correctly. | Incorrect adapter for device; device issue. | Verify this OMNIHIL adapter is compatible with your Singsation XL Portable Karaoke System (SPKA75). Consult your device's manual or manufacturer. |
| Adapter feels excessively hot. | Poor ventilation; overloaded circuit; internal fault. | Ensure adapter is in a well-ventilated area. Disconnect and allow to cool. If overheating persists, discontinue use and contact support. |
If the problem persists after trying these solutions, please contact OMNIHIL customer support.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | OMNI121319518 |
| Input Voltage | World Wide 100V ~ 240V 50/60Hz |
| Cable Length | 8 Feet (approximately 2.4 meters) |
| Safety Certifications | UL Listed |
| Protection Features | OVP (Over Voltage output Protection), OCP (Over Current output Protection), SCP (Short Circuit output Protection) |
| Product Dimensions | 3 x 3 x 2 inches |
| Item Weight | 5 ounces |
| Compatibility | Singsation XL Portable Karaoke System (SPKA75) |
8. Warranty and Support
OMNIHIL stands behind the quality of its products. This AC/DC Adapter comes with a 5-Year Free Warranty.
For warranty claims, technical support, or any inquiries, please contact OMNIHIL customer service through the retailer where you purchased the product or visit the official OMNIHIL store page:
Visit the OMNIHIL Store on Amazon
Please have your product model number (OMNI121319518) and purchase details ready when contacting support.