Solid State Logic 723502X1 Harrison 500 Series Parametric Equalizer

Classic Harrison EQ in a Compact 500 Series Module
The Solid State Logic MR3eq brings the highly regarded 3-band parametric EQ from the Harrison Music Recording 3 (MR3) console to the 500 Series format. Designed for both tracking and mixdown, this module provides the same warm, rich tonal characteristics that defined some of the most iconic albums of the 1970s and 1980s. Whether used for subtle tonal shaping or aggressive frequency sculpting, the MR3eq delivers the signature Harrison sound in a portable and versatile form.

Precision EQ with Musical Tonal Control
Built with decades of analog equalization expertise, the MR3eq offers smooth, natural frequency adjustments that allow engineers to fine-tune their mix with confidence. The 3-band parametric design includes a switchable second-order bell response for both the high and low-frequency bands, while the mid-band provides continuously variable Q control for targeted frequency adjustments. The combination of these features allows users to sculpt their sound with pinpoint accuracy or broad musical strokes.

Switchable High-Pass Filter for Extra Control
A dedicated high-pass filter section adds further flexibility, featuring a 6 dB/octave slope and a characteristic 3 dB resonant peak. This helps to clean up unwanted low-end frequencies without sacrificing warmth and depth, making it ideal for vocals, guitars, bass, and drum processing. Whether used subtly to tighten up a mix or aggressively to reshape a sound, the high-pass filter provides additional tonal shaping capabilities.

Legendary Harrison Sound with Modern Adaptability
Harrison consoles have played an essential role in shaping the sound of legendary artists, including Michael Jackson, ABBA, Led Zeppelin, and Queen. The MR3eq continues this legacy by bringing the same sonic excellence to modern studios in an easily integrable 500 Series format. Designed to meet the demands of today’s engineers, this EQ delivers classic analog warmth with the flexibility required for contemporary productions.

Engineered for Versatility in Any Studio Setup
Designed for seamless integration into any 500 Series chassis, the MR3eq offers intuitive controls, professional-grade components, and an input overload LED to ensure optimal gain staging. Whether used in a large-format studio or a compact project setup, this module provides the high-end EQ shaping needed to enhance any recording or mix.