System comprising: - an apparatus, in particular a VHF amplifier or an amplifier module for a VHF amplifier, comprising one or more amplifier branches (300, 300'), and - a particle accelerator, wherein an accelerator resonator of said particle accelerator is connected to an output of said apparatus, wherein each amplifier branch (300, 300') of said apparatus comprises an amplifier unit and a circuit arrangement which is arranged at the output of said amplifier unit, wherein said circuit arrangement comprises the following: - a pass-through filter section between a first input and/or output node and a second input and/or output node, wherein a pass-through filter with low-pass characteristics is arranged in said pass-through filter section, - a first absorption filter section between said second input and/or output node and a third node, wherein a first high-pass filter is arranged in said first absorption filter section, and wherein a first load resistance is arranged at said third node, and - a second absorption filter section between said first input and/or output node and a fourth node, wherein a second high-pass filter is arranged in said second absorption filter section, and wherein a second load resistor is arranged at said fourth node. - an apparatus, in particular a VHF amplifier or an amplifier module for a VHF amplifier, comprising one or more amplifier branches (300, 300'), and - a particle accelerator, wherein an accelerator resonator of said particle accelerator is connected to an output of said apparatus, wherein each amplifier branch (300, 300') of said apparatus comprises an amplifier unit and a circuit arrangement which is arranged at the output of said amplifier unit, wherein said circuit arrangement comprises the following: - a pass-through filter section between a first input and/or output node and a second input and/or output node, wherein a pass-through filter with low-pass characteristics is arranged in said pass-through filter section, - a first absorption filter section between said second input and/or output node and a third node, wherein a first high-pass filter is arranged in said first absorption filter section, and wherein a first load resistance is arranged at said third node, and - a second absorption filter section between said first input and/or output node and a fourth node, wherein a second high-pass filter is arranged in said second absorption filter section, and wherein a second load resistor is arranged at said fourth node. - a pass-through filter section between a first input and/or output node and a second input and/or output node, wherein a pass-through filter with low-pass characteristics is arranged in said pass-through filter section, - a first absorption filter section between said second input and/or output node and a third node, wherein a first high-pass filter is arranged in said first absorption filter section, and wherein a first load resistance is arranged at said third node, and - a second absorption filter section between said first input and/or output node and a fourth node, wherein a second high-pass filter is arranged in said second absorption filter section, and wherein a second load resistor is arranged at said fourth node.