Tone boost circuit principle explanation

The circuit below is a tone booster circuit. As per the name of the circuit, the purpose is to amplify the sound signal , making both low and high frequencies more powerful. There is no potentiometer for bass/treble adjustment .

Transistor Type: Q1 – ZTX384; Q2 – BC415P

The circuit has a peak frequency of 5000Hz for a cleaner, more penetrating sound.

A tone enhancer is a "repair" version of a tone control circuit . A tone control is a type of equalization used to make specific pitches or "frequencies" in an audio signal softer or louder. A tone control circuit is an electronic circuit consisting of a filter network that modifies the signal before it is fed through an amplifier to a speaker, headphones, or recording device.

Tone control allows listeners to adjust the sound to their own preferences. It also enables them to compensate for recording defects, hearing impairments, room acoustics, or imperfections in the playback equipment. For example, an elderly person with hearing problems may wish to increase the loudness of high-pitched sounds that they have difficulty hearing.