Manley Massive Passive Stereo Tube EQ Mastering Version

Manley Massive Passive Stereo Tube EQ Mastering Version

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Manley Massive Passive Stereo EQ Mastering Version has a simple, passive design – not a standard parametric design – for more natural, organic shaping. It also gives you mechanically detented knobs for both Gain and Bandwidth controls, so you can easily repeat your settings. On the Massive Passive Mastering Version, both the Gain and Bandwidth controls intentionally interact, and the bands interact, as well – this creates an incredible-sounding result without sounding “colored” or “processed.” Also, both higher and lower than the normal version, the Massive Passive Mastering Version’s filters are tailored to mastering purposes.


All-Passive tone sculpting circuitry

Unique Shelf curves use the “bandwidth” control

Overlapping and Interleaved Frequency choices

Every band switchable to shelf or bell

Vacuum tube make-up gain and line drivers

Parallel symmetrical topology

Premium components throughout

Passive HP and LP Filters plus gain trims

Metal Manley mechanically detented GAIN and BANDWIDTH control knobs


Ins & Outs Balanced XLR & 1/4″ (accepts unbalanced)

Level +4 dBu nominal, internal switches for -10 operation

Bypass Switch bypasses EQ & tube circuits (not hardwire)

44 Frequencies (roughly 1/4 octave spacing)

Frequency Range: 22 Hz to 27 kHz

EQ Boost/Cut Range : 20 dB boost, 20 dB cut

Nominal Q range: 1.5 to 3 (uniquely active in shelf modes)

Frequency Response: ±2 dB: 8 Hz to 60 KHz

Maximum Output @ 1.5% THD +37 dBv; +26dBv @ 20 Hz

THD & Noise (1KHz @ +4 dBu): 0.06%

Noise Floor (referred to +4dBu): -85 dB (A Weight)

Dynamic Range: 120 dB

Tube Complement: 2 x 12AX7 EH, 4 x 6414 for serial MSMPX### after 2/2004

Tube Complement: 2 x 5751, 4 x 6414 for serial MSMP### until 2/2004

Power Consumption (120/240VAC): 72 watts

Unit is factory set for 100V, 120V or 220-240VAC operation for original destination country’s mains voltage.

Operating Mains Voltage changeable with power transformer changeover switch and fuse value change.

Mains Voltage Frequency: 50~ 60Hz</

Size (3U): 19″ x 5.25″ x 10″

Weight: Unit 21 lbs.

Shipping Weight: 27 lbs.

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