I don&#x27;t know if that can be done.  There&#x27;s going to be two causes to that, capacitance in the line you&#x27;re plugging in or there being a DC offset from the device.  The amplifier should filter out both of those in the long term pretty easily with some capacitive coupling.  However that will lead to a sharp peak when you plug it in, that makes the speakers pop.<p>You might be able to require a sense line however, and then the amplifier can keep a timed relay on the plug before it actually starts amplifying the signal.