HiBy FD5 Desktop Setup: DAC and Amp Connections

Quick answer

To set up the HiBy FD5, connect your source via USB or Bluetooth, select the correct input on the FD5, plug in your headphones using the 3.5mm or 4.4mm output, and adjust the volume to a safe level before playing audio.

Step-by-step FD5 setup

1. 1. Connect the power and source: Plug the FD5 into a wall outlet using the included power adapter. Then connect your computer, phone, or tablet via USB cable, or pair via Bluetooth if you prefer wireless input. A common mistake is using a low-quality USB cable that can cause dropouts or noise. Use the cable that came with the FD5 or a shielded USB data cable.
2. 2. Select the input source: Press the input button on the front panel to cycle between USB and Bluetooth. The display shows which input is active. If using Bluetooth, make sure the source device is paired and connected. If you hear no sound, check that the FD5 is not stuck in the wrong input mode. The display icon clearly shows the active input.
3. 3. Connect your headphones: Plug your headphones into either the 3.5mm single-ended or 4.4mm balanced output. The 4.4mm output delivers more power and lower crosstalk, so use it if your headphones have a balanced cable. Don't plug into both outputs at the same time unless you intend to drive two headphones simultaneously. The FD5 can drive both, but volume control applies to both outputs together.
4. 4. Set volume to minimum before playback: Turn the volume knob all the way down before starting music. Then gradually increase the volume to a comfortable listening level. A common mistake is starting with the volume too high, which can damage hearing or headphones. Always start low and increase slowly.
5. 5. Adjust system volume on your source device: Set your computer or phone volume to 100% and use the FD5 volume knob as the main volume control. This ensures the DAC receives a full digital signal and avoids loss of resolution. If you lower the source volume, you may introduce digital noise or reduce dynamic range. Keep the source at maximum and control volume on the FD5.

Product facts

• HiBy FD5 ——Cyberpunk desktop HiFi: The HiBy FD5 is a multifunction Desktop-grade DAC Headphone Amplifier, supporting USB and Bluetooth input, with independent 3.5mm and 4.4mm headphone outputs and line outputs and high driving power of up to 1523mW. This means you can connect a computer via USB or a phone via Bluetooth, and choose the headphone output that matches your cable, all while getting enough power for most full-size headphones.