To connect a wireless microphone to a smart TV, you must use a workaround because most smart TVs do not have a dedicated microphone input for karaoke or voice amplification. The three real methods are using your phone as a microphone on select newer Samsung TVs, connecting a wireless receiver set to the TV's audio input ports, or attempting Bluetooth or USB connections that rarely work as expected. If your goal is clearer dialogue rather than singing, you can also connect hearing aids to LG smart TV for direct personal audio streaming, or connect my hearing aid to my smart TV to bring amplified speech directly to your ears.
The truth about trying to connect a wireless microphone to a smart TV: A reality check
Many Smart TVs, including models from Samsung, LG, and Sony, have built-in microphones primarily for voice control features like Bixby or Google Assistant. These built-in TV microphones are typically not intended for external audio input or general recording purposes and often have a physical switch to enable or disable them. Roku TVs generally do not support direct microphone input; voice commands are handled by the remote control's built-in microphone or the Roku mobile app. This means you cannot simply plug a microphone into your TV and have it work. Instead, you must choose one of three workarounds: use a phone as a mic on compatible Samsung TVs, connect a wireless receiver via audio ports, or try Bluetooth/USB connections that have limited support.
Use your phone as a mic on newer Samsung TVs
Samsung Smart TVs (2025 models and later) offer a "Mobile Mic" feature that allows a compatible smartphone to be used as a microphone for karaoke through the SmartThings app and the Stingray Karaoke app. Compatible phones include the Galaxy S23/Flip5/Fold5 or later, and iPhone 15 or later. To use the Samsung Mobile Mic, open the Stingray Karaoke app on the TV, scan the on-screen QR code with your phone, or access the "Karaoke Mic" card in the SmartThings app. When using the Samsung Mobile Mic, only one mobile device can be connected at a time, and the mobile device screen must remain on during use. This method is the simplest for owners of qualifying Samsung TVs and phones, as it requires no additional hardware.
Connect a wireless microphone using a receiver or mixer
The most universal method to connect a wireless microphone to a smart TV is by using a wireless receiver set or an external karaoke mixer. This approach works on any TV with standard audio input ports. Follow these steps:
- Identify the audio input ports on your TV. Common options include RCA (red and white), 3.5mm auxiliary, or optical audio input. If your TV lacks these, you can connect through a soundbar or AV receiver that supports them.
- Connect the wireless receiver to the TV using the appropriate audio cable. For example, plug RCA cables from the receiver's audio output into the TV's RCA audio input, or use a 3.5mm cable if both devices have that port.
- Turn on the receiver and the TV. Access the TV's audio settings and select the correct input source that matches the port you used (e.g., "Audio In" or "External Audio").
- Pair the wireless microphone with the receiver according to the manufacturer's instructions. This usually involves pressing a pairing button on the receiver and the microphone until the connection is confirmed by a steady LED light.
- Test the microphone by speaking into it. Adjust the volume on both the microphone and the TV to achieve clear sound without distortion.
This method provides the most reliable connection for karaoke or voice amplification, especially in larger rooms, because the wireless receiver offers a longer range than Bluetooth.
What about Bluetooth and USB microphones?
Direct Bluetooth pairing or USB plug-and-play for microphones is rare and often unsupported on smart TVs. Most TVs treat Bluetooth as an output for headphones or speakers, not an input for microphones. Similarly, USB ports on TVs are typically for media playback or power, not for audio input devices. However, you can attempt it by checking your TV's audio input settings. Look for an option like "Bluetooth audio input" or "USB audio device" in the sound or device menu. If you find it, put your Bluetooth microphone in pairing mode and scan for devices from the TV. For a USB microphone, plug it into the USB port and see if the TV automatically recognizes it as an audio source. If neither works, you will need to use one of the other methods above. The process of connecting Bluetooth audio to a TV is usually about sending sound out to speakers, not receiving sound from a microphone, which is why direct microphone pairing is so uncommon.
Fine-tune the sound and fix common problems
Once your wireless microphone is connected, you may need to adjust settings to prevent feedback, echo, or audio delay. Start by accessing the TV's audio settings menu. Look for options such as "Microphone Volume," "Microphone Gain," or "Sound Mode." Reduce the microphone gain if you hear feedback (a high-pitched squeal) or excessive background noise. If there is an audio delay between your voice and the TV speakers, check for a "Lip Sync" or "Audio Delay" setting and adjust it to match the microphone input. For echo issues, lower the TV's overall volume or move the microphone away from the TV speakers. If no sound is detected from the microphone, verify that the correct audio input source is selected on the TV and that the microphone's batteries are charged. Testing with different types of content, like a quiet movie scene versus a karaoke track, helps ensure the volume levels remain balanced across all uses.
