The JBL S 2 A is a model of active studio monitor speaker that is designed to deliver professional sound quality for monitoring and mixing in various audio applications. It features a bi-amplified design with a dedicated amplifier for the woofer and tweeter, ensuring clear highs and robust lows. The speaker typically includes controls for adjusting high-frequency and low-frequency response, allowing users to tailor the sound to their listening environment. It often features a robust build quality, designed to withstand frequent use in studio settings.