Marantz Equalizers are audio processing devices designed to enhance the listening experience by allowing users to adjust the frequency response of their audio systems. These equalizers typically feature a range of frequency bands, often with sliders or knobs that allow for precise adjustments. Users can boost or cut specific frequencies to tailor the sound according to personal preferences or room acoustics. Many models offer both graphic and parametric EQ options, where graphic EQs provide a fixed number of frequency bands, and parametric EQs allow for a more flexible adjustment of center frequencies and bandwidths. Common specifications include 7 to 31 frequency bands, +/-12 to +/-18 dB of gain adjustment, and features like low and high-pass filters, balance control, and signal-to-noise ratios. Some models may also support various media inputs, including RCA, XLR, and digital connections, enabling them to integrate easily with different audio sources. The design of Marantz Equalizers often includes a rugged chassis with a user-friendly interface, making them suitable for both home and professional audio applications.