To-30B DC5V Stereo Audio EQ Alto Medio e Basso Tre Bande Bilanciato5203
LOW, MID, HIGH are respectively for adjusting, midrange and treble. IN: Stereo audio input. OUT: Stereo audio output. Input and output interfaces: phono jacks. Input impedance: 50KΩ. Mute circuit, no impact sound during startup and shutdown.