- PLL circuits are common parts inside modern amplifiers and AV receivers.
- PLL (Phase-Locked Loop) refers to a zero difference between a sound input signal entering the amplifier and the output signal leaving the amplifier towards the speakers.
- Audio signals are usually subject to frequency distortion as the travel through the amplifier.
- This affects the intensity of sound reproduced by your speakers.
- A PLL circuit has a voltage-driven oscillator that keeps on adjusting to match the frequency or intensity of the input signal.
- The PLL circuit contributes to excellent audio output.
Also read: What does DSP mode mean in home theatre systems?