1. Introduction
The eppfun AK3056R Pro is a versatile Bluetooth 5.2 audio receiver designed to upgrade your existing audio systems with wireless capabilities. It allows you to stream music from your smartphone or other Bluetooth-enabled devices to non-Bluetooth home speakers, car stereos, or other wired audio equipment. Additionally, it supports music playback directly from USB memory sticks and MicroSD cards, offering multiple ways to enjoy your audio.
2. Product Overview and Components
The AK3056R Pro features a compact design with essential ports and controls for easy operation.

Image: Front view of the eppfun AK3056R Pro, highlighting its Type-C power port, 3.5mm AUX output, RCA left/right audio outputs, and top-mounted control buttons for volume and playback.
Key Features:
- Bluetooth 5.2 Technology: Provides stable and fast wireless audio transmission with extended range and improved energy efficiency compared to older Bluetooth versions.
- NFC Functionality: Enables quick, one-touch pairing with compatible NFC-enabled smartphones.
- Multiple Audio Outputs: Equipped with 3.5mm AUX and RCA outputs for broad compatibility with various audio systems.
- Local Media Playback: Supports music playback directly from USB memory sticks and MicroSD cards.
- Compact Design: Small and lightweight, making it easy to integrate into any audio setup.
3. Setup
Follow these steps to set up your eppfun AK3056R Pro audio receiver:
- Power Connection: Connect the receiver to a power source using the provided Type-C USB cable. The device will automatically enter pairing mode upon powering on.
- Audio Output Connection: Choose one of the following methods to connect the receiver to your audio system:
- 3.5mm AUX: Use a 3.5mm audio cable to connect the receiver's AUX output to the AUX input of your wired speaker or stereo system.
- RCA: Use an RCA audio cable to connect the receiver's RCA outputs (red for right, white for left) to the corresponding RCA inputs on your amplifier or stereo system.

Image: The eppfun AK3056R Pro demonstrating compatibility with various input sources (Echo Dot, smartphones, tablets, laptops) and output devices (amplifiers, wired speakers) via RCA and 3.5mm AUX connections.
4. Operating Instructions
Bluetooth Pairing:
- Ensure the AK3056R Pro is powered on. It will automatically enter Bluetooth pairing mode, indicated by a flashing LED light.
- On your smartphone or Bluetooth-enabled device, go to the Bluetooth settings and turn Bluetooth on.
- Search for available devices and select "eppfun AK3056R Pro" from the list.
- Once connected, the LED indicator on the receiver will become solid, and you can begin streaming audio.

Image: A visual representation of the eppfun AK3056R Pro in use, wirelessly streaming music to a speaker in a home environment.
NFC Pairing (for compatible devices):
- Ensure the NFC function is enabled on your mobile phone.
- Place your NFC-enabled phone directly onto the NFC sensing area of the AK3056R Pro.
- Confirm the connection prompt on your phone. The devices will pair automatically and quickly.

Image: A smartphone being brought into contact with the NFC area of the eppfun AK3056R Pro, demonstrating the one-touch pairing process.
Local Media Playback (USB/MicroSD):
- Insert a USB memory stick or MicroSD card (with music files) into the corresponding slot on the receiver.
- The receiver will automatically detect the media and begin playing music.
- Use the playback control buttons on the device to manage your music (play/pause, next/previous track, volume).

Image: A USB flash drive being inserted into the eppfun AK3056R Pro, indicating its capability for direct music playback from USB storage.
5. Maintenance
To ensure the longevity and optimal performance of your eppfun AK3056R Pro, please follow these maintenance guidelines:
- Keep the device dry. Avoid exposure to water or excessive humidity.
- Clean the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Store the device in a cool, dry place when not in use.
- Avoid dropping or subjecting the device to strong impacts.
6. Troubleshooting
If you encounter issues with your eppfun AK3056R Pro, refer to the following common problems and solutions:
| Problem | Solution |
|---|---|
| Device does not power on. | Ensure the Type-C USB cable is securely connected to both the receiver and a working power source. Try a different USB cable or power adapter. |
| Cannot pair via Bluetooth. | Make sure the receiver is in pairing mode (flashing LED). Turn off and on Bluetooth on your smartphone. Ensure your smartphone is within the 10m reception range. Clear previous Bluetooth connections on your phone if necessary. |
| No sound output. | Check all audio cable connections (3.5mm AUX or RCA) between the receiver and your audio system. Ensure the volume on both the receiver and your connected audio system is turned up. Verify that the correct input source is selected on your audio system. |
| NFC pairing fails. | Ensure NFC is enabled on your smartphone and that your phone supports NFC. Make sure to place your phone directly on the NFC sensing area of the receiver. |
| USB/MicroSD playback not working. | Ensure the USB stick or MicroSD card is inserted correctly and contains compatible music files (e.g., MP3). Try a different USB stick or MicroSD card. |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | eppfun |
| Model | AK3056R Pro |
| Connectivity Technology | Bluetooth 5.2, AUX, RCA |
| Power Source | USB (Input Voltage: 4.8V ~ 5.25V) |
| Material | Acrylonitrile Butadiene Styrene (ABS), Metal |
| Color | Black |
| Item Weight | 45 grams |
| Compatible Devices | Speakers |
| Supported Standards | AAC, SBC |
| Control Method | Touch |
| Audio Output Mode | Stereo |
| Wireless Communication Standard | Radio Frequency |
| Reception Distance | Up to 10m (indoors) |
| Additional Features | NFC, USB Memory Playback, MicroSD Card Slot |
8. Warranty and Support
eppfun values your shopping experience and provides a 12-month manufacturer's warranty for this product. If you have any questions or concerns regarding the eppfun AK3056R Pro, please do not hesitate to contact our customer support. We are committed to addressing your inquiries as quickly as possible.
For support, please visit the official eppfun store or contact us through the platform where you purchased the product.

