The Sansui SH-15 is a stereo graphic equalizer that was designed to enhance audio playback through frequency adjustment, allowing users to shape sound according to their preferences. It features a 10-band equalization slider layout for precise control over different frequency ranges, typically spanning from 31.5 Hz to 16 kHz. The unit generally includes additional controls like volume adjustment, as well as input and output level matching features. It may also feature a bypass switch to allow users to compare equalized sound with the original audio signal. The compact design with an appealing front panel usually accommodates standard rack mounting systems. Typically, the construction quality is robust, and the unit often incorporates various connectivity options, including RCA inputs and outputs, suitable for connecting to other audio components.