The Genelec 1237A SAM three-way monitoring loudspeaker utilizes AutoCal™ and GLM™ control network technologies and features high-efficiency Class D power amplifiers. Tradition meets innovation 1237A is a first-class monitoring solution for studio and post-processing use, digital mastering and radio and TV studio use. like all Genelec monitors, the 1237A produces uncolored and natural sound even at high sound pressures. With room correction to accuracy The 1237A combines Genelec's 35 years of experience in designing reliable 3-way loudspeakers with state-of-the-art AutoCal™ and Genelec Loudspeaker Manager (GLM™) control network technologies. In the GLM system, the levels, delays and frequency response of each monitor speaker connected to the network are automatically calibrated to the listening environment. Typically recessed into the wall, the 1237A speaker features a large Directivity Control Waveguide (DCW™) that delivers a clear sound image and excellent fidelity even in acoustically challenging environments.