A multi-function sound chamber for a handheld barcode reader may include the ability to (i) amplify or otherwise efficiently project an audible signal generated by a buzzer of the barcode reader to sound window(s), and (ii) provide stiffening support to a printed circuit board (PCB) on which an electromechanical switch is mounted that a trigger of the handheld barcode reader engages when activated by a user of the reader. The sound chamber may provide other functions, including isolating light between good/bad read signals and battery level status. Another function may include reducing electrostatic discharge (ESD) by providing a high-impedance seal around connecting screws. Another function may include retention of the PCB by providing a pocket with a compliant material to retain a top or other edge of the PCB. By having the sound chamber perform multiple functions, the barcode reader may be produced more efficiently and cost effectively.