SOOMFON 2-in-1 Bluetooth 5.0 Audio Adapter User Manual

1. Introduction

Thank you for purchasing the SOOMFON 2-in-1 Bluetooth 5.0 Audio Adapter. This device is designed to enhance your audio experience by providing seamless wireless connectivity for a wide range of devices. It functions as both a Bluetooth transmitter (TX) and a Bluetooth receiver (RX), offering high-fidelity audio with minimal latency.

Please read this manual carefully before using the product to ensure proper operation and to maximize its performance and lifespan.

Image: The SOOMFON 2-in-1 Bluetooth 5.0 Audio Adapter, showcasing its compact design and various connection cables.

2. Key Features

• 2-in-1 Functionality: Easily switch between Transmitter (TX) and Receiver (RX) modes to suit your audio needs.
• aptX & aptX Low Latency Support: Certified aptX Low Latency ensures a "no lip-sync delay" experience (latency < 40ms) for perfectly synchronized audio and video, whether watching TV or listening to music. (Note: Your connected device must also support aptX LL for this feature to function.)
• Dual Connection:
  • In TX mode, connect up to two Bluetooth headphones or speakers simultaneously.
  • In RX mode, connect up to two mobile phones or tablets simultaneously (only one device can stream audio at a time).
• Automatic Reconnection: Devices are remembered after the first pairing, allowing for automatic reconnection.
• User-Friendly Design: Clear LED status indicators provide visual feedback on the device's operation.
• Multiple Audio Interfaces: Equipped with Optical (SPDIF IN/OUT) and 2-in-1 AUX (3.5mm IN/OUT) ports to meet various connection requirements.
• Extended Wireless Range: Enjoy a stable connection up to 20 meters (65 feet) in open areas, minimizing audio interruptions.
• Long Battery Life: Built-in 600mAh lithium-ion battery provides over 20 hours of continuous playtime on a full charge (approx. 2 hours charging time).

Image: The adapter facilitating dual Bluetooth headphone connection for shared audio experience from a TV.

3. Package Contents

Please check the package for the following items:

• 1 x SOOMFON Bluetooth Audio Adapter (SF-BT026)
• 1 x USB-C Charging Cable
• 1 x 3.5mm AUX Audio Cable
• 1 x Optical Audio Cable
• 1 x RCA Audio Cable (3.5mm to 2RCA)
• 1 x User Manual

Image: The SOOMFON Bluetooth Audio Adapter shown with all included accessories: USB-C charging cable, 3.5mm AUX cable, optical cable, RCA cable, and the user manual.

4. Setup and Charging

4.1 Charging the Device

Before first use, fully charge the SOOMFON Bluetooth Audio Adapter.

1. Connect the provided USB-C charging cable to the DC-5V port on the adapter.
2. Connect the other end of the USB-C cable to a USB power adapter (5V/1A recommended, not included) or a computer's USB port.
3. The LED indicator will show charging status. Once fully charged (approximately 2 hours), the indicator will change (refer to LED indicator section for details).

4.2 Powering On/Off

• Power On: Press and hold the power button (⏻) for 3 seconds until the LED indicators light up.
• Power Off: Press and hold the power button (⏻) for 3 seconds until the LED indicators turn off.

Image: Visual representation of the adapter's long battery life, highlighting 20 hours of standby time and a 600mAh battery.

5. Operating Modes

The SOOMFON adapter supports two main operating modes: Transmitter (TX) and Receiver (RX). Use the TX/RX switch on the side of the device to select the desired mode.

5.1 Transmitter (TX) Mode

In TX mode, the adapter transmits audio from non-Bluetooth devices (e.g., TV, PC, projector) to Bluetooth-enabled devices (e.g., Bluetooth headphones, speakers).

Image: Illustration of the adapter in TX (Transmitter) mode, demonstrating its connection to a TV, PC, or projector, and wirelessly transmitting audio to Bluetooth headphones or speakers.

1. Set the TX/RX switch to TX.
2. Connect the adapter to your audio source (e.g., TV, PC) using the appropriate cable (Optical, 3.5mm AUX, or RCA).
   • For Optical connection: Use the SPDIF IN port.
   • For AUX/RCA connection: Use the AUX IN port.
3. Power on the adapter. The TX indicator will light up.
4. Put your Bluetooth headphones or speakers into pairing mode.
5. The adapter will automatically search for and connect to nearby Bluetooth devices. Once connected, the A or B indicator (for first or second device) will light up.
6. Dual Connection (TX Mode): To connect a second pair of Bluetooth headphones/speakers, put the second device into pairing mode. Press the pairing button on the SOOMFON adapter. The adapter will search and connect to the second device. Both A and B indicators will be lit when two devices are connected.

5.2 Receiver (RX) Mode

In RX mode, the adapter receives audio from Bluetooth-enabled devices (e.g., smartphone, tablet, laptop) and outputs it to non-Bluetooth audio systems (e.g., wired speakers, home stereo systems, car stereos).

Image: Illustration of the adapter in RX (Receiver) mode, demonstrating its connection to a smartphone, tablet, or laptop, and wirelessly transmitting audio to wired speakers, an amplifier, or a car stereo.

1. Set the TX/RX switch to RX.
2. Connect the adapter to your audio output device (e.g., wired speaker, stereo system) using the appropriate cable (Optical, 3.5mm AUX, or RCA).
   • For Optical connection: Use the SPDIF OUT port.
   • For AUX/RCA connection: Use the AUX OUT port.
3. Power on the adapter. The RX indicator will light up.
4. Enable Bluetooth on your smartphone, tablet, or laptop and search for "SOOMFON SF-BT026" (or similar). Select it to pair.
5. Once connected, the A indicator will light up.
6. Dual Connection (RX Mode): To connect a second mobile device, enable Bluetooth on the second device and search for "SOOMFON SF-BT026". Connect to it. Both A and B indicators will be lit, but only one device can stream audio at a time.

5.3 Understanding LED Indicators

The SOOMFON adapter features clear LED indicators to show its current status and active audio codec.

Image: A detailed view of the adapter's central LED display, highlighting various indicators such as OPT (Optical), AUX, APTX, LL (Low Latency), SBC, AAC, FS (Fast Stream), TX (Transmitter), RX (Receiver), and A/B for connected devices.

6. Maintenance and Care

• Keep the device dry. Do not expose it to moisture or extreme temperatures.
• Clean the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
• Avoid dropping or subjecting the device to strong impacts.
• Store the device in a cool, dry place when not in use for extended periods.
• Do not attempt to disassemble or repair the device yourself. This will void the warranty.

7. Troubleshooting

8. Specifications

9. Warranty and Support

SOOMFON products come with a standard manufacturer's warranty. For detailed warranty information, please refer to the warranty card included in your package or visit the official SOOMFON website.

If you encounter any issues or have questions regarding your SOOMFON 2-in-1 Bluetooth Audio Adapter, please contact our customer support team. Contact details can typically be found on the product packaging or our official website.