Introduction
This manual provides essential information for the safe and effective operation of your Singing Machine Wireless Karaoke Microphone, Model SMM548. This portable device combines a microphone, speaker, and voice changer effects, designed for an engaging karaoke experience. Please read these instructions thoroughly before use and retain them for future reference.

Figure 1: The Singing Machine Wireless Karaoke Microphone (Model SMM548).
Product Features
- All-in-1 Design: Portable microphone with integrated speaker.
- Bluetooth Connectivity: Stream music wirelessly from compatible devices.
- Voice Changer Effects: Six built-in effects including male, female, echo, robot, chipmunk, and radio.
- Lead Vocal Removal: One-button touch technology to reduce lead vocals from songs.
- Music-Syncing Lights: Dazzling LED lights that synchronize with the music.
- Rechargeable Battery: Provides up to 4 hours of operation on a single charge.

Figure 2: Key features and controls of the SMM548 microphone.
Setup
1. Charging the Microphone
Before initial use, fully charge the microphone's internal battery. Locate the Micro USB charging port at the bottom of the microphone. Connect the provided Micro USB cable to the microphone and the other end to a compatible USB power source (e.g., a USB wall adapter or computer USB port). The charging indicator light will illuminate during charging and turn off when fully charged. A full charge typically takes approximately one hour and provides up to 4 hours of playtime.
2. Powering On/Off
Press and hold the Power button (usually indicated by a power symbol) on the microphone's handle to turn the device on or off. The LED lights will activate upon powering on.
3. Bluetooth Pairing
- Ensure the microphone is powered on. The Bluetooth indicator light will flash, indicating it is in pairing mode.
- On your Bluetooth-enabled device (smartphone, tablet, etc.), navigate to the Bluetooth settings.
- Search for available devices and select "Singing Machine" or "SMM548" from the list.
- Once paired, the Bluetooth indicator light on the microphone will stop flashing and remain solid. You can now stream audio from your device through the microphone's speaker.
Video 1: Official product video demonstrating the Singing Machine Microphone's features and ease of use.
Operating Instructions
1. Adjusting Volume
Use the Volume Up (+) and Volume Down (-) buttons on the microphone's handle to adjust the microphone's output volume. The speaker volume is controlled by your connected Bluetooth device.
2. Voice Changer Effects
Press the "FX" button repeatedly to cycle through the six built-in voice changer effects: Echo, Female, Male, Chipmunk, Robot, and Radio. Experiment with each effect to enhance your performance.
3. Lead Vocal Removal
Press the "VOCALS" button to activate or deactivate the lead vocal removal feature. This function attempts to reduce the main vocal track from a song, allowing you to sing along more prominently.
4. Light Effects
The microphone features multi-colored LED lights that synchronize with the music, creating a dynamic visual experience. These lights activate automatically when the microphone is powered on.

Figure 3: Users streaming music from a Bluetooth device to the microphone.
Maintenance
To ensure the longevity and optimal performance of your Singing Machine Wireless Karaoke Microphone, follow these maintenance guidelines:
- Cleaning: Wipe the microphone with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the microphone in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To preserve battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in use for extended periods.
- Water Exposure: This device is not waterproof. Avoid exposure to water or excessive moisture.
Troubleshooting
| Problem | Possible Solution |
|---|---|
| Microphone does not power on. | Ensure the battery is charged. Connect to a power source using the Micro USB cable. |
| No sound from the speaker. | Check microphone volume. Ensure Bluetooth device is paired and its volume is up. Verify music is playing on the connected device. |
| Cannot pair via Bluetooth. | Ensure the microphone is in pairing mode (flashing Bluetooth light). Turn off and on both the microphone and your Bluetooth device. Move closer to the microphone. |
| Voice changer effects not working. | Ensure the microphone is powered on and you are speaking directly into the microphone grille. Press the "FX" button to cycle through effects. |
Specifications
- Model Number: SMM548
- Item Weight: 14.9 ounces
- Product Dimensions: 3.4 x 2.2 x 10 inches
- Color: Black
- Connector Type: Micro USB
- Speaker Count: 1
- Power Source: Battery Powered (Rechargeable)
- Compatible Devices: Bluetooth-enabled devices (Smartphones, Tablets, Music Players)
- Included Components: SMM548 Party Machine Mic, Micro-USB Charger
Warranty and Support
For warranty information or technical assistance, please refer to the official Singing Machine website or contact their customer service. Singing Machine maintains a US-based customer service team dedicated to assisting with product inquiries.
Video 2: Official product video showcasing the Singing Machine Karaoke Machine in action.





