Untitled attachment https://social.mikutter.hachune.net/system/media_attachments/files/112/782/248/149/113/074/original/732c1f0380e42364.png
@niconiconi @lamp I don't see the noise mic input to be amplified over in this diagram.Vin I assume should be the signal from the car radio auxiliary cable and Vout would be the monitors or speakers.