- Ensure all wiring is correct.
- Move the amplifier away from potential sources of interference.
- Try using a different power supply and socket.
- Try using a different audio source, speaker wire, speaker, input cable, and adjust the volume on the amplifier and source.
- If there are multiple input and output modes, confirm if the other modes are working properly.
- If it is a tube amplifier (e.g. T20, T3), ensure that the tubes are inserted correctly, switch the tubes on both sides and replace them with other functional tubes.
If you have any questions or concerns, please don't hesitate to contact support@fosiaudio.com.
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