Circuitry includes an input node, an output node, acoustic filtering circuitry, an inductive element, and a capacitor. The acoustic filtering circuitry includes an acoustic filtering input node and an acoustic filtering output node. The inductive element is coupled in series with the acoustic filtering circuitry between the input node and the output node such that the inductive element is coupled between the input node and the acoustic filtering input node and the acoustic filtering output node is coupled to the output node. The capacitor is coupled in parallel with the acoustic filtering circuitry and the inductive element between the input node and the output node. Providing the inductive element in series with the acoustic filtering circuitry and the capacitor in parallel with the acoustic filtering circuitry and the inductive element provides a highly selective notch filter response between the input node and the output node with high attenuation.