Harrison 500 Series MR3 EQ Module

The legendary Harrison MR3eq brings the iconic sound that shaped countless platinum albums from the 70s and 80s directly into your 500 Series rack. Originally designed for the groundbreaking Harrison MR3 studio console in 1981, this three-band parametric equaliser became the secret weapon behind some of music’s most influential recordings. Artists like Michael Jackson, ABBA, Led Zeppelin, and Queen relied on Harrison’s distinctive sonic character to craft their timeless masterpieces.

Built from decades of equaliser and filter design expertise, the MR3eq offers remarkable versatility for both surgical precision and broad musical shaping. The high-frequency section features 6 dB/octave shelf bands that can switch to 2nd order bell response with Harrison’s renowned proportional Q technology. Meanwhile, the mid-band provides continuously variable Q control, and a dedicated high pass filter section includes a distinctive 3 dB resonant peak that adds character and punch.

This high-performance analogue EQ excels across diverse source materials, proving equally valuable during tracking sessions and mixdown scenarios. The circuit design encourages rich band interaction, creating the colourful sonic character that made Harrison consoles the choice of legendary engineers like Bruce Swedien, Roger Nichols, and Reinhold Mack. Now available in the convenient 500 Series format, the MR3eq puts professional-grade Harrison sound within reach of modern studios.