The ATC SCS120 Pro is a 15" active subwoofer built for precise low-frequency performance in professional audio environments. It features a sealed-box design and a proprietary 375mm driver, offering accurate and controlled bass response. Designed to pair seamlessly with ATC’s range of professional monitors such as the SCM45A through SCM300A, the SCS120 Pro supports stereo, surround, and immersive audio setups. Equipped with a 300W convection-cooled Class A/B amplifier, it delivers reliable performance with low distortion. The subwoofer provides dual balanced XLR inputs and outputs, along with adjustable gain, phase, polarity, and selectable low-pass filters to tailor the response to the room and system configuration. A remote mute function is available via a latching footswitch connection. An in-wall version with a remote amplifier, the SCS120iW Pro, is also offered for installation-specific needs. The SCS120 Pro combines power, precision, and flexibility for studios that require dependable and clear low-end monitoring.