You can troubleshoot the cracking, beeping, fluttering, clicking, or high-pitched noise issue while using an amplifier.
- All cables are securely in place and correctly connected.
- Test away any interference devices.
- Try different power supply and socket.
- If it has multiple input/output modes, try other modes to see if the issue persist.
- Check if the noise is still present when the input is disconnected.
- Try to connect it to different sources, output and cables.
- If it is a tube amplifier, warm up for a few minutes, re-seat the tubes, switch them, try a spare pair of tubes.
- Please turn off the toggle switch before unplugging/replugging it from DC power, or it will make a popping sound.
If you have any questions or concerns, please don't hesitate to contact support@fosiaudio.com.
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