Overview

Passive Stereo Mid Band Equalizer with Tube Makeup Gain

The Manley Dual Mid Band EQ is a modernized, true-stereo evolution of the most respected passive EQ design in professional audio. Built for mix-bus work, mastering chains, and high-end tracking. It provides mastering-grade midrange control with smooth, musical precision - shaping presence, clarity, and punch without harshness.

The Dual Mid Band EQ combines a passive inductor-based EQ network, high-voltage tube makeup gain, and custom in-house wound Manley Iron transformers into a dual-channel signal path designed to do more than adjust tone. The result is equalization that shapes weight, dimension, depth, and musical cohesion - not just frequency balance. The front-panel labeling supports mid-side workflows, allowing for seamless integration with external M-S encoders and independent equalization of mid and side components, providing the spatial control necessary for professional mastering.

A universal switchmode power supply, compatible with all mains voltages, contributing to the unit's extended headroom and low noise floor. The Dual Mid Band EQ is hand built in California.

The Dual Mid Band EQ is designed to complete and analog master-bus EQ system together with the passive stereo Dual Main EQ. The Dual Main EQ handles lows and highs; the Dual Mid Band EQ handles the midrange. Together they cover the full frequency spectrum with a coherent, matched character - and the Manley sound throughout.

Product Details

  • Classic mid band passive equalizer design
  • Passive inductor-based equalization - broad, natural, phase-coherent curves
  • High-voltage all-tube signal path - 5751 input stage, 12BH7 output stage
  • Custom in-house wound Manley Iron transformers on input and output
  • True stereo dual-channel operation - Left/Right or Mid/Side compatible (no internal matrix included)
  • Frequency response: flat within ±0.1 dB from 20 Hz–22 kHz, Total response: 10 Hz–70 kHz
  • Output exceeding +30 dBu, 26 dB headroom referenced to +4 dBu
  • THD / Noise: < 0.01%
  • Designed for mix-bus, mastering, tracking, and stem processing
  • Universal switchmode power supply — compatible with all mains voltages
  • 2U rackmount
  • Designed to build a complete analog master-bus EQ system with the Manley Dual Mid Band EQ
  • Handcrafted in California, USA
Format
Stereo / Dual Mono
Topology
Passive EQ
Tube Stage
2× 5751, 2× 12BH7
Frequency Response
20 Hz–22 kHz (flat within ±0.1 dB), 10 Hz–70 kHz (total)
THD / Noise
< 0.01%
Signal to Noise Ratio
89 dB
Max Output
+30 dBu
Dynamic Range
115 dB
Input Impedance
5 kΩ
Output Impedance
150 Ω
Inputs
Balanced XLR, transformer-coupled
Outputs
XLR balanced - transformer coupled, TRS unbalanced - direct coupled
Transformers
Manley Iron (in & out)
Bypass
All-tube path (not hardwire bypass)
Power Supply
Universal switchmode
Dimensions (H × W × D)
88.9 × 482.6 × 177.8 mm, 2U
Weight
5 kg
Origin
Handcrafted in California, USA