This user manual provides instructions for connecting and using the Aune BU2 portable audio decoder amplifier via USB or Bluetooth.
The Aune BU2 is a high-quality portable audio decoder and headphone amplifier designed to drive headphones with a wider range. It supports digital signal decoding from connected devices such as smartphones, portable players, or computers via a USB-OTG cable or Bluetooth connection.
The device features multiple filter modes including Linear Phase Fast Roll-off (SD), Minimum Phase Slow Roll-off (SE), and others. Users can select between 2.5mm balanced and 3.5mm single-ended headphone outputs to suit their equipment. This manual is written in Chinese.
| Output Level (3.5mm) | 3.6Vrms |
|---|---|
| THD+n | 0.000176% |
| SNR | -120dB |
| Frequency Response | ±0.5dB (20Hz-40kHz) |
| Power Output (Balanced 2.5mm) | 265mW@32Ω |
| Power Output (Single-ended 3.5mm) | 100mW@32Ω |
| Dimensions | 126mm x 65mm x 18mm |
| Weight | 230g |
Set the device to USB mode and connect a smartphone, portable player, or computer using a USB-OTG cable.
Turn on Bluetooth on your source device and search for 'aune BU2' to connect.