Thank you Bob_bundus for your informations !
Yes, I have a line conditioner with surge protection. But I will turn off and unplug everything in case of thunderstorm or away from home for few days.
Is there any possibility that an amplifier or preamplifier coult burn into flames when on, like it happens more often than some think with tv sets ?
Yes, I have a line conditioner with surge protection. But I will turn off and unplug everything in case of thunderstorm or away from home for few days.
Is there any possibility that an amplifier or preamplifier coult burn into flames when on, like it happens more often than some think with tv sets ?

