Description
Overview
The Harrison Audio MR3eq Equaliser Module brings the legendary sonic character of the Harrison MR3 studio console into the versatile 500 Series format. Originally introduced in 1981, the MR3 console became a cornerstone of world-class studios, utilized by leading engineers to shape some of the most iconic albums of the 70s and 80s. This module replicates that heritage, offering a punchy, smooth sound and powerful sculpting capabilities that balance musical vibe with engineering precision.
Designed for both surgical correction and broad creative enhancement, the MR3eq allows for significant band interaction, resulting in a rich and colorful sonic character. Whether you are looking to add “air” to a vocal or tighten the low-mid punch of a bass guitar, this high-performance analog EQ provides the professional tools necessary to excel in any production environment.
Key Details
- 3-Band Parametric Design: A powerful analog EQ featuring a +/- 10 dB boost/cut range across three flexible bands.
- High-Frequency Control: Operates from 800 Hz to 15 kHz with a 6 dB/octave Shelf band, which can be switched to a 2nd order Bell response utilizing Harrison’s renowned proportional Q.
- Mid-Band Versatility: Covers the 400 Hz to 8 kHz range with a continuously variable, proportional Q for precise frequency targeting.
- Integrated High Pass Filter: A dedicated HPF section with a 3dB corner frequency to clear out unwanted low-end rumble.
- Independent Routing: Features separate “In” switches for both the EQ and HPF sections, allowing you to engage filters independently of the parametric bands.
- Visual Monitoring: Includes an input overload LED to ensure signals remain within the optimal headroom range.
Use Cases
- Tracking: Use the HPF and Mid-band to clean up source material during recording, ensuring a balanced signal before it hits your converters.
- Mixdown: Apply broad musical strokes to instruments to create space in a dense mix or use the Bell response for surgical notch filtering.
- Vocal Polishing: Leverage the High-frequency Shelf to add professional sheen and clarity to lead vocals.
- Drum Shaping: Utilize the punchy analog character to add weight to kicks or snap to snares without introducing digital harshness.
Installation
The MR3eq is a hardware module designed for the 500 Series standard. Installation requires a compatible 500 Series chassis (powered rack). Simply slide the module into an available slot in your chassis and secure it with the provided mounting screws. Once installed, the module draws power directly from the chassis backplane, requiring no external power supply.
Compatibility
- Format: Compatible with all standard 500 Series format chassis.
Additional Details
- Manufacturer: Harrison
- Edition: MR3eq
- Delivery Format: Physical Module
- Platform: 500 Series
- Weight: 0.62 lbs
- Dimensions: 8″ x 6.3″ x 0.15″






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