The MEQ-550B is an equalizer plugin designed to capture the warm tones and signature character of a renowned American classic EQ. Instead of traditional Q controls, it employs proportional Q technology, where the bandwidth narrows as the gain increases, delivering a more focused and dynamic sound. This unique approach enables precise tonal shaping that enhances both subtle and aggressive equalization tasks.

This EQ offers a wide selection of frequency bands, covering low to high ranges with overlapping options. Users can access a detailed spectrum, from deep bass frequencies starting at 30 Hz up to shimmering highs reaching 20 kHz. The carefully chosen frequency points cater to intricate sound design and mixing needs, allowing for both broad tonal adjustments and pinpoint accuracy.

Additional features include built-in Mid-Side processing, which provides enhanced stereo field control for more creative mixing possibilities. The plugin also includes output gain and phase controls, enabling users to balance the overall volume and correct phase alignment within their mix. These capabilities make the MEQ-550B a valuable tool for engineers seeking classic EQ sound with modern flexibility.