Sudio FL2 is a wireless connection adapter that allows you to connect your wireless earphones with analog audio devices.

It contains a transmitter that can turn any audio signal from a device with a 3.5mm headphone jack or double 3.5mm flight audio socket into a wireless signal.

Sudio FL2 lets you enjoy a seamless listening experience with devices such as portable gaming devices, in-flight entertainment, and television screens.

First, you need to pair your earphones with Sudio FL2. Once they are paired, you are ready to connect Sudio FL2 to any audio device.

1. Make sure there are no other wireless connection-activated devices around you to prevent Sudio FL2 from connecting to the wrong devices.
2. Press and hold the round button on your Sudio FL2 for 3 seconds until the LED light starts blinking white.
3. Take out your earphones and let them enter pairing mode.
4. Keep your earphones very close (1 to 2 cm) to FL2.
5. Once you see the LED light on your Sudio FL2 stop blinking, your earphones are successfully paired with Sudio FL2.
6. If you want to connect a second pair of earphones to FL2, click on the round button on FL2 twice and follow the same procedure.
7. Plug Sudio FL2 into the device to which you want to connect your earphones. If there is only one output available, use the main pin (the pin that has one line under it).

How to plug in FL2

FL2 has two jacks, which can be used separately or together.

Devices without a wireless connection function that have a 3.5 mm headphone jack including portable gaming devices and televisions can be turned into wireless products by simply plugging Sudio FL2 into a headphone jack.

You can also connect it to in-flight entertainment, where two-pin socket is required most of the time. When there is only one output available, please use the main pin (the pin that has one line under it).

Signal interference

FL2 can be up to a maximum of 10 meters (32 ft) from the paired device, but the connection may break if they are blocked by walls or similar objects. 

FL2 has a control button that allows you to pair it with another device and turn it on/off.

Power

• Press (hold) for 3 seconds until the LED shows a steady light to power on FL2.
• Press (hold) for 6 seconds until the LED turns off to power off FL2.
• FL2 will turn off automatically after some time if nothing is transmitted or the earphone is not paired.

Charging and play times

FL2 can be used for approximately 14 hours on one charge before it needs to be recharged.

Charging methods

FL2 can only be charged with a Type-C USB-cable, wireless charging is not supported. We recommend using the Sudio cable included in the package, however, other third-party Type-C USB-cables may be compatible too.

While charging the LED on FL2 will turn red. It will turn off when the FL2 is fully charged. 

Battery level indicators

When the light on the FL2 blinks red three times, the battery level is 0-10%.

Download User Manual (PDF)