A hearing aid device is provided that has a body housing a microphone electrically connected to an amplifier. A receiver, in communication with the amplifier, receives an electrical signal converted from sound. A unique feature of the device is the inclusion of a dome, designed to contact within the ear, which is removably attachable to the receiver via a threaded connection mechanism. This mechanism can either be a direct male threaded attachment on the receiver that engages with a female thread within the dome or incorporate a dome insert with the female thread. The dome, typically bell-shaped, mushroom-shaped or umbrella shaped with a size range from 4 millimeters to 12 millimeters depending on individual comfort level and hearing loss, and formed of silicone or a similar material that offer flexibility, durability, and good formability, can be efficiently detached by twisting between one to six rotations, facilitating easy cleaning or replacement. Made from material that's easily cleaned by a soft cloth, the dome ensures clarity in sound delivery and optimal hygiene for the user.