The Pro-Ject Sub Box 50 is a dedicated subwoofer amplifier designed to enhance the low-frequency output of audio systems. It features a compact design, making it suitable for both small and larger audio setups. The Sub Box 50 is compatible with passive subwoofers, providing a powerful and dynamic bass experience. Its topology ensures minimal distortion and high efficiency, enabling it to deliver clean and punchy bass reproduction. The unit typically includes controls for adjusting gain and a low-pass crossover to tailor the sound to the specific characteristics of the listener's room or the associated speakers. Additionally, it is equipped with different connectivity options, including RCA inputs and outputs, facilitating integration with various audio sources and systems. This versatility makes the Sub Box 50 an ideal choice for home theater setups, music systems, or any application where robust bass response is desired.