The Topping RC-22 is a remote-controlled preamplifier that often serves as a versatile input/output hub for various audio systems. It is designed to handle both analog and digital audio signals, providing a convenient interface for controlling volume and source selection. This product is typically compact and features a sleek design, making it suitable for modern audio setups. The RC-22 is equipped with a range of inputs and outputs, including multiple line-level inputs, a headphone output, and possibly additional features like Bluetooth connectivity. With its remote control functionality, users can manage their audio environment from a distance, enhancing the overall user experience.