The ADAM Audio Sub12 is a powerful subwoofer designed to extend the low-frequency capabilities of any near- or mid-field monitoring. The Sub12 subwoofer uses a 200W Ice Power amp to drive a large (50 mm) voice coil. The power amp stays cool as it uses PWM technology in both the amp and the power supply sections, producing greater than 90% overall efficiency. The Sub12's amp can handle its maximum power without danger to the electronics or the driver. The Sub12 has a 12" woofer capable of producing a 3dB higher (118dB) SPL max output and reproduces frequencies down to 22Hz.

The Sub12 subwoofer works with a down-firing bass reflex tube that, due to its shape and size, avoids unnecessary ventilation noise. For larger rooms or higher levels you can chain as many ADAM subwoofers together as needed.

The Sub12 powered subwoofer has balanced (XLR) and unbalanced (RCA) in and output connectors, and numerous controls to adapt to different room acoustics and requirements. The ADAM Audio Sub12 also has a level control from -60dB to +6dB, a phase ±180 degree switch, a variable upper barrier frequency (50–150Hz), and a switchable 85Hz high pass filter for the satellite output. In addition, there is a "signal-on/continuous" switch, which provides the option of automatic power up whenever the subwoofer receives signals/automatic power off after 15 minutes of no signal.

The Sub12 is an ideal match for ADAM monitors such as the P series or the S1A, S2A, S2.5A or S3A studio monitors. In any small- to medium-sized control room, they guarantee powerful yet precise bass response.