Introduction
The eppfun AK3040R Ultra is a high-performance Bluetooth 5.4 audio receiver designed to bring audiophile-grade wireless sound to your existing audio systems. Equipped with the advanced Qualcomm QCC5181 chip, it supports a wide range of high-resolution audio codecs including aptX Lossless, LDAC, LHDC, and Le Audio, delivering up to 192K/24bit audio quality. With both optical and coaxial digital outputs, and versatile Bluetooth/USB dual input, this adapter offers flexible connectivity for various devices, transforming your listening experience with high-fidelity, low-latency wireless transmission.
Package Contents
Please check the box for the following items:
- eppfun AK3040R Ultra Bluetooth Audio Receiver
- TYPE-C Cable (x1)
- Foot Pads (x4)
- Optical Audio Cable (x1)
- Instruction Manual (x1)
- Warranty Card (x1)
- Certificate (x1)
Specifications
| Feature | Specification |
|---|---|
| Product | Bluetooth Audio Receiver |
| Model | AK3040R Ultra |
| Bluetooth Version | 5.4 |
| Bluetooth Protocol | A2DP, AVRCP |
| Bluetooth Chip | Qualcomm QCC5181 |
| Power Supply Mode | TYPE-C |
| Audio Output | Optical / Coaxial Interface |
| Wireless Distance | >10m |
| Rated Inputs | 5V===200mAh |
| Power Supply | DC 5V |
| Frequency Range | 2.402GHz~2.480Ghz |
| SNR (Signal-to-Noise Ratio) | 112dB |
| Distortion | 0.0022387% |
| Audio Codecs Supported | SBC, AAC, aptX, aptX-HD, aptX-Adaptive, aptX-lossless, LDAC, LHDC, Le Audio |
| Input Mode | Bluetooth / USB (PC/Phone OTG) |
| USB Highest Sampling Rate | 96K/24Bit |
| Bluetooth Highest Sampling Rate | 192K/24Bit |
| Product Material | Alloy |
| Net Weight | 43g |
| Color | Black |
Features & Highlights
- Qualcomm QCC5181 Chip: Utilizes Qualcomm's flagship QCC5181 high-performance low-power chip with powerful quad-core processing and dual-core Qualcomm Kalimba DSP audio subsystem.
- Advanced Bluetooth 5.4: Ensures faster, more stable, and efficient wireless connections.
- Comprehensive Audio Codec Support: Supports SBC, AAC, aptX, aptX-HD, aptX-Adaptive, aptX-lossless, LDAC, LHDC, and Le Audio for superior sound quality.
- High-Resolution Audio: Delivers up to 192K/24bit audio via Bluetooth and 96K/24bit via USB.
- Dual Digital Outputs: Features Optical and Coaxial interfaces for versatile connectivity to various audio systems.
- Dual Input Modes: Supports Bluetooth wireless input and USB (PC/Phone OTG) wired input.
- High Fidelity Lossless Sound: Designed for audiophiles seeking CD-class wireless transmission and professional audio decoding.
- Extended Range: Offers a wireless transmission distance of over 10 meters.
Setup & Installation
Follow these steps to set up your eppfun AK3040R Ultra Bluetooth Audio Receiver:
1. Powering the Device
- Connect the provided TYPE-C cable to the 'TYPE-C' port on the AK3040R Ultra.
- Plug the other end of the TYPE-C cable into a 5V USB power source (e.g., a USB wall adapter, computer USB port). The device will power on automatically.
2. Connecting to Your Audio System
The AK3040R Ultra offers both Optical and Coaxial digital outputs. Choose the appropriate cable based on your audio system's input:
- Optical Connection: Insert one end of the optical audio cable into the 'OPTICAL OUT' port on the receiver. Insert the other end into the optical input port of your amplifier, active speakers, or DAC.
- Coaxial Connection: Insert one end of a coaxial cable into the 'COAX OUT' port on the receiver. Insert the other end into the coaxial input port of your amplifier, active speakers, or DAC.
3. Bluetooth Pairing
- Ensure the AK3040R Ultra is powered on. The Bluetooth indicator light will flash, indicating it's in pairing mode.
- On your smartphone, tablet, or computer, go to the Bluetooth settings.
- Search for available devices. You should see "eppfun AK3040R Ultra" in the list.
- Select "eppfun AK3040R Ultra" to connect.
- Once connected, the Bluetooth indicator light on the receiver will remain constantly on. You can now play audio from your device through the AK3040R Ultra.
4. USB Audio Input (PC/Phone OTG)
The AK3040R Ultra can also function as a USB sound card for your PC or OTG-compatible phone:
- Connect the TYPE-C cable from the AK3040R Ultra to a USB port on your computer or an OTG-compatible smartphone.
- The device should be recognized automatically by your operating system. You may need to select the AK3040R Ultra as the audio output device in your system's sound settings.
- Audio will now be routed digitally from your computer/phone to the AK3040R Ultra, then outputted via its optical or coaxial ports to your audio system.
Operating Instructions
- Power On/Off: The device powers on automatically when connected to a 5V USB power source. Disconnect the power cable to turn it off.
- Bluetooth Connection: Once paired, the receiver will automatically attempt to reconnect to the last paired device when powered on and within range.
- Audio Playback: Control audio playback (play/pause, volume, track selection) directly from your connected source device (smartphone, tablet, PC).
- Indicator Light: The LED indicator light shows the device's status. Flashing indicates pairing mode, while a solid light indicates a successful Bluetooth connection.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use liquid cleaners or aerosols.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Avoid dropping or subjecting the device to strong impacts.
- Cables: Ensure all cables are connected securely and are not bent or crimped excessively.
Troubleshooting
- No Sound:
- Ensure the AK3040R Ultra is powered on and the indicator light is solid (connected).
- Verify that the optical or coaxial cable is securely connected to both the receiver and your audio system.
- Check the input selection on your amplifier or active speakers to ensure the correct digital input (Optical/Coaxial) is selected.
- Confirm that your source device (phone, PC) is connected via Bluetooth or USB and that its volume is turned up.
- If using USB input, ensure the AK3040R Ultra is selected as the default audio output device in your computer's sound settings.
- Bluetooth Disconnection/Cannot Pair:
- Ensure the receiver is within the 10m wireless range of your source device.
- Turn off and on the Bluetooth function on your source device.
- Restart the AK3040R Ultra by disconnecting and reconnecting its power.
- Forget/remove "eppfun AK3040R Ultra" from your device's Bluetooth list and attempt to pair again.
- Ensure no other devices are actively connected to the AK3040R Ultra.
- Poor Sound Quality:
- Ensure your source audio files are of high quality.
- Check for interference from other wireless devices (Wi-Fi routers, microwaves).
- Try moving the receiver closer to your source device.
- Verify that your source device is transmitting using a high-quality codec (LDAC, LHDC, aptX Lossless) if supported.
User Tips
- For the best audio quality, ensure your source device supports and is configured to use high-resolution Bluetooth codecs like LDAC, LHDC, or aptX Lossless.
- When using the USB input, ensure your computer's audio settings are configured to output at the highest possible sampling rate (up to 96K/24Bit) for optimal performance.
- Place the receiver in an open area, away from large metal objects or other electronic devices that might cause interference, to maximize Bluetooth range and stability.
- Consider using high-quality optical or coaxial cables to maintain signal integrity between the receiver and your audio system.
Warranty & Support
The eppfun AK3040R Ultra Bluetooth Audio Receiver comes with a standard manufacturer's warranty. Please refer to the included Warranty Card for specific terms and conditions regarding coverage and duration. For technical support, troubleshooting assistance, or warranty claims, please contact eppfun customer service through the official website or your point of purchase. Keep your proof of purchase for warranty validation.
