A power amplifier device for a magnetic resonance device includes a circuit board with at least one power amplifier module, and at least one electronics structure including coupled conductor paths arranged on opposing sides of the circuit board. The power amplifier device also includes a cooling plate operable for cooling components on the circuit board that heat up during operation and abutting the circuit board on one side. The cooling plate has a depression that follows the course of the conductor path and faces the conductor path in the region of the conductor path of the electronics structure that is arranged on the side of the circuit board facing the cooling plate.