Manley Massive Passive Stereo Tube EQ Mastering Version – Professional Tube Equalizer

The Manley Massive Passive Stereo Tube EQ Mastering Version is a high-end, all-tube stereo equalizer designed specifically for mastering applications. Renowned for its musicality, warmth, and ultra-smooth tonal shaping, the Massive Passive Mastering Version is the go-to EQ for professional mastering engineers seeking unparalleled analog precision and character. With its passive EQ design and tube-driven circuitry, this version of the Massive Passive offers exceptional clarity and depth for finalizing your audio in the most transparent and musical way possible.

Featuring Manley’s classic Class A, all-tube signal path, the Massive Passive Mastering Version utilizes custom-built Manley transformers and precision-matched tubes (12AX7, 12AT7) to produce a sound that is rich, detailed, and musical. Its 4-band EQ with selectable frequencies and high-precision shelving filters allow you to sculpt the sound across the entire frequency spectrum, while maintaining transparency and preserving the integrity of the original recording.

Key Features

All-tube, hand-wired stereo equalizer designed for mastering
Class A, all-discrete analog circuitry for ultimate musicality and tonal control
4-band passive EQ with selectable frequencies and bandwidths
Dual high and low shelving EQs for powerful frequency adjustments
Custom Manley transformers for full, rich harmonic content
Precision VU meters for level monitoring
Bypass switches for each band and full unit bypass for A/B comparison
High-grade, precision components for ultra-low noise and distortion
Ideal for final mastering, mix bus, and stereo bus processing

Technical Specifications

Frequency Response: 20 Hz – 100 kHz (+0/-3 dB)
EQ Bands: 4 bands (low, low-mid, high-mid, high) + 2-band shelving EQ
Gain Control: +/- 18 dB per band
Bandwidth Control: Selectable for each band
Input Impedance: 30 kΩ balanced
Output Impedance: 600 Ω balanced
Power Supply: 100–240 VAC, 50/60 Hz (universal power supply)
Dimensions: 19” x 3.5” x 12” (48.3 cm x 8.9 cm x 30.5 cm)
Weight: Approx. 28 lbs (12.7 kg)

Ideal For

Mastering engineers requiring an ultra-musical, transparent EQ for final mastering
Mix engineers looking for analog warmth and precise control over their stereo bus
Studios wanting a high-end EQ that preserves the integrity of the original recording

The Manley Massive Passive Stereo Tube EQ Mastering Version offers mastering engineers the perfect tool for shaping sound with elegance and warmth. This version of the legendary Massive Passive ensures that your final masters will have the clarity, depth, and analog richness that only a tube-driven EQ can provide.