Audio Receivers & Head Units, found within the Miscellaneous & Accessories > Car Audio section, are the central control units for the in-vehicle entertainment system. These units manage audio sources such as AM/FM radio, CD players, and modern digital media inputs like Bluetooth and USB. Typically installed within the vehicle's dashboard, they provide amplification and signal processing to deliver sound through the vehicle's speaker system. These receivers often include features like preset station memory, equalization controls, and connectivity for auxiliary devices. Examples within this category include units for Renault passenger cars, robust receivers designed for Volvo Construction equipment (MPN VOE17431224), and head units for commercial vehicles like MAN (MPN 81612300362 and 81.61230-0210) and Scania (MPN 2186355).