- Ensure that all cables are properly connected.
- Adjust the treble and bass controls on the power amplifier to achieve the desired sound.
- Try changing the sound source and cables to test. Please use high-quality music input.
- If it is a tube amp, check if the vacuum tube is damaged or fully inserted.
- If amp doesn’t have controls, please connect a preamp or DAC before the amp to adjust the bass and treble sound.
If you have any questions or concerns, please don't hesitate to contact support@fosiaudio.com.
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