Customs tariffs on imported tech stuff?

I’m wondering weather anybody knows how customs would treat an incoming shippment of electronics, in particular musical instruments amplification equipment for private use, when shipped by FedEx from Europe?

Will they just let it go through, will the recipient have to pay any duties on it (and how much, percentage?), will it be a major hussle to pry it out of their hands, maybe including a trip to beautiful Jilong harbour etc. …

I’d be grateful for any insights if anybody has made experiences here, thanks.