Recording level power supply circuit

In order to ensure that the circuit reaches the high technical indicators it should use, high-quality components must be used. All resistors use Class I precision
metal film resistors . Capacitors should use precision polystyrene capacitors. Polyester capacitors can be used for larger capacities. The leakage of coupling capacitors
must be small to avoid noise. The head coupling capacitor should be a tantalum electrolytic capacitor.
    The power supply also has a great influence on the sound quality. The main circuit uses a transistor regulated power supply, and the movement is powered by a separate regulated power
supply to avoid interference with the amplification circuit when the movement is working. Its power circuit is shown in Figure 3-19.