How to transmit the sound of mechanical records to the stereo?

The old record player uses piezoelectric crystal to pick up the sound, and the output level is high, so it can be directly input from the line input jack. Generally, the phonograph is connected with audio through wires, and the audio output interface is connected with the active speaker through audio wires. If you want to pass the power amplifier, connect the audio output port of the record player to the input port of the power amplifier, and then connect the audio output port (high, medium and low frequency) of the power amplifier to the corresponding input port of the speaker with a cable. Although the record player is an old music player, there are also some vinyl record players with Bluetooth function, which can connect audio through Bluetooth.

The integrated record player does not need external speakers and power amplifiers, because the power amplifiers and speakers were designed in the record player in advance when they were made, which is simply a two-in-one design and can be used directly.