Freeze-drying system (1) for drying liquid-containing products (10), - having a vacuum chamber (11) which is designed to receive the liquid-containing products (10), - a receiving device (12) with at least one receiving plate (13) being provided, onto which the liquid-containing products (10) can be applied, - and wherein a cooling system (14) with a fluid circuit (15) is set up in order to cool the products (10) by means of the cooling fluid (16) guided in the fluid circuit (15) and / or to heat, characterized in that- the receiving plate (13) has at least one closed fluid space (17) which is connected to the fluid circuit (15) and through which the cooling fluid (16) can flow, wherein- at least one sound generator (18) ) is provided for the sounding of ultrasound into the products (10) during a drying phase, the sound generator (18) being set up in the fluid space (17) and around which cooling fluid (16) can flow.
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