AIYIMA DAC-A4 Bluetooth 5.0 Decoder

Shenzhen Yima Technology Co., Ltd

Website: www.aiyima.com

Telephone: 86-0755-28268551

Email: sale@aiyima.com

VK: https://vk.com/aiyima

Location: 4F, Building 7 Hekan industrial park. Wuhe south road 41. Long-Gang district. ShenZhen. CHINA. 518000

Front Panel Introduction

1. Power switch: Controls the power ON/OFF.

2. Working indicator:

• Turn on: Green indicator light
• Search Bluetooth status: Green flashing
• Connection Succeeded: Green indicator light
• HD sound quality: Yellow indicator light
• Lossless sound quality: White indicator light

3. 3.5mm amp output: Connects to amplifier or headphones.

4. Headphone amp volume adjustment: Controls the headphone output volume (MIN to MAX).

Rear Panel Introduction

5. Bluetooth antenna: For Bluetooth signal reception.

6. Coaxial Output: Digital audio output via coaxial cable.

7. RCA Output: Analog audio output (Left and Right channels).

8. PC-USB/Phone OTG/USB-5V digital decoder+power supply: Type-C port for USB audio input, OTG connection, and power supply.

Package List

• Machine: x1
• USB power cable: x1
• Users manual: x1
• Bluetooth antenna: x1
• Certificate of conformity: x1

Technical Specifications

Bluetooth Connection Playback

1. Connect the Type-C data cable and the DAC-A4 to a power charger, and turn the switch to ON.
2. On your phone, enter Bluetooth settings, search for and connect to the "CSR8675" device name.
3. Connect the device that needs to obtain audio signal to the AUX-3.5/red and white RCA interface of the DAC-A4 output.
4. Play music by opening your preferred music player APP on your phone.
5. Adjust the volume on your mobile phone to control the output volume of the DAC-A4 to a suitable loudness.

Type-C Data USB Decoding Playback

1. Connect the Type-C interface to the DAC-A4 and the USB end to the computer.
2. A new audio device, "CSR8675-USB", should be found on the computer. Set it as the default audio device.
3. Play computer music, and the audio will be output through the DAC-A4 decoder.
4. For mobile phone USB decoding, connect using a Type-C OTG cable for playback.

Customer Information: Device Burn-in

The internal components of the DAC-A4 are designed for optimal performance after an initial "burn-in" period. During this time, continuous operation will help the equipment reach its ideal state, enhancing sound delicacy, smoothness, elasticity, and dynamic range. This process also improves the sense of vertical depth. The speaker's performance can also be adjusted during this period by positioning the device optimally within your listening environment for the best effect.

Product Quality and Construction

Appearance:

The device features an aluminum alloy metal shell, providing excellent thermal conductivity and durability. The surface is finished with an anodized frosting process, resulting in a delicate and smooth texture.

Circuit:

The internal circuit utilizes a high-density integrated PCB design with 100% non-breakpoint circuit detection. It employs high-conductivity copper for superior performance, exceeding industry standards. The shortest and most efficient wiring methods are used to minimize external interference, ensuring a reasonable design layout and high-fidelity audio output.

Raw Materials:

AIYIMA sources raw materials directly from manufacturers. Each batch undergoes rigorous checks and comparisons to ensure uniformity in specifications and performance indicators, thereby reducing the impact of potential errors.

Troubleshooting and Handling

Can't turn on?

If the DAC-A4 indicator does not light up, please verify that the power adapter's output voltage is normal and try using a different power cable.

USB decoding has no sound output?

The DAC-A4 prioritizes Bluetooth connections. When using the USB decoding function, please disconnect any active Bluetooth connections.

Only one channel has sound?

Check if the issue persists across different input methods. If it does, test the left and right channels separately using a speaker. If the problem remains, check the input signal and the signal cable.

Cannot search the receiver Bluetooth?

Ensure the device is not already connected to another Bluetooth device. Turn off Bluetooth on other connected devices and try searching again.

If the above methods do not resolve your issue, please contact our customer service staff for further assistance.