1. Introduction
This manual provides essential instructions for the safe and effective use of your SLLEA AC/DC Adapter, specifically designed for the Marpac Marsona 1250 Sound Conditioner. Please read this manual thoroughly before using the product to ensure proper operation and to prevent damage.
2. Safety Information
- Compatibility: Ensure this adapter is compatible with your device (Marpac Marsona 1250 Sound Conditioner) before connecting. Refer to your device's specifications.
- Power Source: Connect the adapter only to a properly grounded electrical outlet within the specified input voltage range (100-240VAC, 50/60Hz).
- Protection Features: This adapter includes Over Voltage Protection and Over Heat Protection for enhanced safety.
- Handling: Do not expose the adapter to water, moisture, or extreme temperatures. Avoid dropping or subjecting it to strong impacts.
- Ventilation: Ensure adequate ventilation around the adapter during use. Do not cover it.
- Maintenance: Do not attempt to open or repair the adapter. Refer all servicing to qualified personnel.
- Children: Keep the adapter and its cord out of reach of children.
3. Product Overview
The SLLEA AC/DC Adapter is a compact power supply designed to provide reliable power to your Marpac Marsona 1250 Sound Conditioner. It features a standard US 2-pin plug for wall outlets and a barrel connector for your device.

Figure 1: Main view of the SLLEA AC/DC Adapter. This image shows the compact black adapter unit with its attached power cord and barrel connector, ready for use.

Figure 2: Side view of the SLLEA AC/DC Adapter, highlighting the US 2-pin wall plug. This perspective clearly displays the prongs for insertion into an electrical outlet.

Figure 3: Angled view of the SLLEA AC/DC Adapter, showing the textured casing and the connection point for the power cord. This view provides a good sense of the adapter's overall design and build.
4. Setup
- Verify Compatibility: Before connecting, confirm that your Marpac Marsona 1250 Sound Conditioner requires an AC/DC adapter with a barrel connector and matches the power specifications provided by SLLEA.
- Connect to Device: Insert the barrel connector end of the SLLEA AC/DC Adapter firmly into the power input port of your Marpac Marsona 1250 Sound Conditioner.
- Connect to Power Outlet: Plug the 2-pin wall plug of the adapter into a standard electrical wall outlet. Ensure the outlet is easily accessible.
- Power On: Once connected, you can power on your Marpac Marsona 1250 Sound Conditioner according to its own operating instructions.
5. Operating Instructions
The SLLEA AC/DC Adapter functions as a power supply. Once properly connected to your Marpac Marsona 1250 Sound Conditioner and a power outlet, it will continuously supply power to the device. There are no user-adjustable settings on the adapter itself.
- To power your device, simply ensure the adapter is securely plugged into both the device and a live electrical outlet.
- To disconnect power, unplug the adapter from the wall outlet first, then from the device.
6. 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 aerosols.
- 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.
- Inspection: Periodically inspect the adapter and cable for any signs of damage, such as frayed wires, cracked casing, or bent pins. If damage is found, discontinue use immediately and replace the adapter.
7. Troubleshooting
- No Power to Device:
- Ensure the adapter is securely plugged into both the wall outlet and the Marpac Marsona 1250.
- Check if the wall outlet is functional by plugging in another device.
- Verify that the Marpac Marsona 1250 is turned on and functioning correctly with its original power supply (if available).
- Inspect the adapter cable and connectors for any visible damage.
- Adapter Feels Hot:
- It is normal for adapters to feel warm during operation. However, if it feels excessively hot to the touch, disconnect it immediately.
- Ensure the adapter has adequate ventilation and is not covered.
- If excessive heat persists, discontinue use and contact support.
8. Specifications
- Brand: SLLEA
- Model: AC/DC Adapter for Marpac Marsona 1250
- Input Voltage: 100-240VAC, 50/60Hz (World Wide Input Voltage)
- Connector Type: Barrel Connector
- Main Power Connector Type: 2 Pin (US Standard)
- Safety Features: Over Voltage Protection, Over Heat Protection
- Compatible Devices: Marpac Marsona 1250 Sound Conditioner
- UPC: 753038907642
9. Warranty and Support
SLLEA stands by the quality of its products. This adapter comes with the following warranty:
- 30 Days Money Back Guarantee
- 60 Days Free Exchange (with paid return label)
- 360 Days Worry-Free Warranty
If you have any questions, concerns, or require assistance with your SLLEA AC/DC Adapter, please do not hesitate to contact the seller directly. We are here to help.